Search

Your search keyword '"Mirko Curti"' showing total 28 results
Start Over Author "Mirko Curti"
28 results on '"Mirko Curti"'

1. Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic Star Formation Rate Density 300 Myr after the Big Bang

Author

Brant Robertson, Benjamin D. Johnson, Sandro Tacchella, Daniel J. Eisenstein, Kevin Hainline, Santiago Arribas, William M. Baker, Andrew J. Bunker, Stefano Carniani, Phillip A. Cargile, Courtney Carreira, Stephane Charlot, Jacopo Chevallard, Mirko Curti, Emma Curtis-Lake, Francesco D’Eugenio, Eiichi Egami, Ryan Hausen, Jakob M. Helton, Peter Jakobsen, Zhiyuan Ji, Gareth C. Jones, Roberto Maiolino, Michael V. Maseda, Erica Nelson, Pablo G. Pérez-González, Dávid Puskás, Marcia Rieke, Renske Smit, Fengwu Sun, Hannah Übler, Lily Whitler, Christina C. Williams, Christopher N. A. Willmer, Chris Willott, and Joris Witstok

Subjects
Early universe, Galaxy formation, Galaxy evolution, High-redshift galaxies, Reionization, Astrophysics, QB460-466
Abstract

We characterize the earliest galaxy population in the JADES Origins Field, the deepest imaging field observed with JWST. We make use of ancillary Hubble Space Telescope optical images (five filters spanning 0.4–0.9 μ m) and novel JWST images with 14 filters spanning 0.8−5 μ m, including seven medium-band filters, and reaching total exposure times of up to 46 hr per filter. We combine all our data at >2.3 μ m to construct an ultradeep image, reaching as deep as ≈31.4 AB mag in the stack and 30.3–31.0 AB mag (5 σ , r = 0.″1 circular aperture) in individual filters. We measure photometric redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts z = 11.5−15. These objects show compact half-light radii of R _1/2 ∼ 50−200 pc, stellar masses of M _⋆ ∼ 10 ^7 −10 ^8 M _☉ , and star formation rates ∼ 0.1−1 M _☉ yr ^−1 . Our search finds no candidates at 15 < z < 20, placing upper limits at these redshifts. We develop a forward-modeling approach to infer the properties of the evolving luminosity function without binning in redshift or luminosity that marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the impact of nondetections. We find a z = 12 luminosity function in good agreement with prior results, and that the luminosity function normalization and UV luminosity density decline by a factor of ∼2.5 from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical models for evolution of the dark matter halo mass function.

Published
2024
Full Text
View/download PDF

2. The Cosmos in Its Infancy: JADES Galaxy Candidates at z > 8 in GOODS-S and GOODS-N

Author

Kevin N. Hainline, Benjamin D. Johnson, Brant Robertson, Sandro Tacchella, Jakob M. Helton, Fengwu Sun, Daniel J. Eisenstein, Charlotte Simmonds, Michael W. Topping, Lily Whitler, Christopher N. A. Willmer, Marcia Rieke, Katherine A. Suess, Raphael E. Hviding, Alex J. Cameron, Stacey Alberts, William M. Baker, Stefi Baum, Rachana Bhatawdekar, Nina Bonaventura, Kristan Boyett, Andrew J. Bunker, Stefano Carniani, Stephane Charlot, Jacopo Chevallard, Zuyi Chen, Mirko Curti, Emma Curtis-Lake, Francesco D’Eugenio, Eiichi Egami, Ryan Endsley, Ryan Hausen, Zhiyuan Ji, Tobias J. Looser, Jianwei Lyu, Roberto Maiolino, Erica Nelson, Dávid Puskás, Tim Rawle, Lester Sandles, Aayush Saxena, Renske Smit, Daniel P. Stark, Christina C. Williams, Chris Willott, and Joris Witstok

Subjects
Extragalactic astronomy, Redshift surveys, James Webb Space Telescope, High-redshift galaxies, Galaxies, Astrophysics, QB460-466
Abstract

We present a catalog of 717 candidate galaxies at z > 8 selected from 125 square arcmin of NIRCam imaging as part of the JWST Advanced Deep Extragalactic Survey (JADES). We combine the full JADES imaging data set with data from the JWST Extragalactic Medium Survey and First Reionization Epoch Spectroscopic COmplete Survey (FRESCO) along with extremely deep existing observations from Hubble Space Telescope (HST)/Advanced Camera for Surveys (ACS) for a final filter set that includes 15 JWST/NIRCam filters and five HST/ACS filters. The high-redshift galaxy candidates were selected from their estimated photometric redshifts calculated using a template-fitting approach, followed by visual inspection from seven independent reviewers. We explore these candidates in detail, highlighting interesting resolved or extended sources, sources with very red long-wavelength slopes, and our highest-redshift candidates, which extend to z _phot ∼ 18. Over 93% of the sources are newly identified from our deep JADES imaging, including 31 new galaxy candidates at z _phot > 12. We also investigate potential contamination by stellar objects, and do not find strong evidence from spectral energy distribution fitting that these faint high-redshift galaxy candidates are low-mass stars. Using 42 sources in our sample with measured spectroscopic redshifts from NIRSpec and FRESCO, we find excellent agreement to our photometric redshift estimates, with no catastrophic outliers and an average difference of 〈Δ z = z _phot − z _spec 〉 = 0.26. These sources comprise one of the most robust samples for probing the early buildup of galaxies within the first few hundred million years of the Universe’s history.

Published
2024
Full Text
View/download PDF

3. The JWST Advanced Deep Extragalactic Survey: Discovery of an Extreme Galaxy Overdensity at z = 5.4 with JWST/NIRCam in GOODS-S

Author

Jakob M. Helton, Fengwu Sun, Charity Woodrum, Kevin N. Hainline, Christopher N. A. Willmer, George H. Rieke, Marcia J. Rieke, Sandro Tacchella, Brant Robertson, Benjamin D. Johnson, Stacey Alberts, Daniel J. Eisenstein, Ryan Hausen, Nina R. Bonaventura, Andrew Bunker, Stephane Charlot, Mirko Curti, Emma Curtis-Lake, Tobias J. Looser, Roberto Maiolino, Chris Willott, Joris Witstok, Kristan Boyett, Zuyi Chen, Eiichi Egami, Ryan Endsley, Raphael E. Hviding, Daniel T. Jaffe, Zhiyuan Ji, Jianwei Lyu, and Lester Sandles

Subjects
Early universe, Galaxy evolution, Galaxy formation, High-redshift galaxies, High-redshift galaxy clusters, Astrophysics, QB460-466
Abstract

We report the discovery of an extreme galaxy overdensity at z = 5.4 in the GOODS-S field using James Webb Space Telescope (JWST)/NIRCam imaging from JADES and JEMS alongside JWST/NIRCam wide-field slitless spectroscopy from FRESCO. We identified potential members of the overdensity using Hubble Space Telescope+JWST photometry spanning λ = 0.4–5.0 μ m. These data provide accurate and well-constrained photometric redshifts down to m ≈ 29–30 mag. We subsequently confirmed N = 81 galaxies at 5.2 < z < 5.5 using JWST slitless spectroscopy over λ = 3.9–5.0 μ m through a targeted line search for H α around the best-fit photometric redshift. We verified that N = 42 of these galaxies reside in the field, while N = 39 galaxies reside in a density around ∼10 times that of a random volume. Stellar populations for these galaxies were inferred from the photometry and used to construct the star-forming main sequence, where protocluster members appeared more massive and exhibited earlier star formation (and thus older stellar populations) when compared to their field galaxy counterparts. We estimate the total halo mass of this large-scale structure to be $12.6\lesssim {\mathrm{log}}_{10}\left({M}_{\mathrm{halo}}/{M}_{\odot }\right)\lesssim 12.8$ using an empirical stellar mass to halo mass relation, which is likely an underestimate as a result of incompleteness. Our discovery demonstrates the power of JWST at constraining dark matter halo assembly and galaxy formation at very early cosmic times.

Published
2024
Full Text
View/download PDF

4. JADES Initial Data Release for the Hubble Ultra Deep Field: Revealing the Faint Infrared Sky with Deep JWST NIRCam Imaging

Author

Marcia J. Rieke, Brant Robertson, Sandro Tacchella, Kevin Hainline, Benjamin D. Johnson, Ryan Hausen, Zhiyuan Ji, Christopher N. A. Willmer, Daniel J. Eisenstein, Dávid Puskás, Stacey Alberts, Santiago Arribas, William M. Baker, Stefi Baum, Rachana Bhatawdekar, Nina Bonaventura, Kristan Boyett, Andrew J. Bunker, Alex J. Cameron, Stefano Carniani, Stephane Charlot, Jacopo Chevallard, Zuyi Chen, Mirko Curti, Emma Curtis-Lake, A. Lola Danhaive, Christa DeCoursey, Alan Dressler, Eiichi Egami, Ryan Endsley, Jakob M. Helton, Raphael E. Hviding, Nimisha Kumari, Tobias J. Looser, Jianwei Lyu, Roberto Maiolino, Michael V. Maseda, Erica J. Nelson, George Rieke, Hans-Walter Rix, Lester Sandles, Aayush Saxena, Katherine Sharpe, Irene Shivaei, Maya Skarbinski, Renske Smit, Daniel P. Stark, Meredith Stone, Katherine A. Suess, Fengwu Sun, Michael Topping, Hannah Übler, Natalia C. Villanueva, Imaan E. B. Wallace, Christina C. Williams, Chris Willott, Lily Whitler, Joris Witstok, and Charity Woodrum

Subjects
High-redshift galaxies, Astrophysics, QB460-466
Abstract

JWST has revolutionized the field of extragalactic astronomy with its sensitive and high-resolution infrared view of the distant Universe. Adding to the new legacy of JWST observations, we present the first NIRCam imaging data release from the JWST Advanced Deep Extragalactic Survey (JADES), providing nine filters of infrared imaging of ∼25 arcmin ^2 covering the Hubble Ultra Deep Field and portions of Great Observatories Origins Deep Survey South. Utilizing 87 on-sky dual-filter hours of exposure time, these images reveal the deepest ever near-infrared view of this iconic field. We supply carefully constructed nine-band mosaics of the JADES bands, as well as matching reductions of five additional bands from the JWST Extragalactic Medium-band Survey. Combining with existing Hubble Space Telescope imaging, we provide 23-band space-based photometric catalogs and photometric redshifts for ≈47,500 sources. To promote broad engagement with JADES, we have created an interactive FitsMap website to provide an interface for professional researchers and the public to experience these JWST data sets. Combined with the first JADES NIRSpec data release, these public JADES imaging and spectroscopic data sets provide a new foundation for discoveries of the infrared Universe by the worldwide scientific community.

Published
2023
Full Text
View/download PDF

5. First Sample of Hα+[O iii]λ5007 Line Emitters at z > 6 Through JWST/NIRCam Slitless Spectroscopy: Physical Properties and Line-luminosity Functions

Author

Fengwu Sun, Eiichi Egami, Nor Pirzkal, Marcia Rieke, Stefi Baum, Martha Boyer, Kristan Boyett, Andrew J. Bunker, Alex J. Cameron, Mirko Curti, Daniel J. Eisenstein, Mario Gennaro, Thomas P. Greene, Daniel Jaffe, Doug Kelly, Anton M. Koekemoer, Nimisha Kumari, Roberto Maiolino, Michael Maseda, Michele Perna, Armin Rest, Brant E. Robertson, Everett Schlawin, Renske Smit, John Stansberry, Ben Sunnquist, Sandro Tacchella, Christina C. Williams, and Christopher N. A. Willmer

Subjects
Emission line galaxies, High-redshift galaxies, James Webb Space Telescope, Starburst galaxies, Galaxy spectroscopy, Astrophysics, QB460-466
Abstract

We present a sample of four emission-line galaxies at z = 6.11–6.35 that were serendipitously discovered using the commissioning data for the James Webb Space Telescope (JWST)/NIRCam wide-field slitless spectroscopy mode. One of them (at z = 6.11) has been reported previously, while the others are new discoveries. These sources are selected by the secure detections of both [O iii ] λ 5007 and H α lines with other fainter lines, which were tentatively detected in some cases (e.g., [O ii ] λ 3727, [O iii ] λ 4959). In the [O iii ]/H β –[N ii ]/H α Baldwin–Phillips–Terlevich diagram, these galaxies occupy the same parameter space as that of z ∼ 2 star-forming galaxies, indicating that they have been enriched rapidly to subsolar metallicities (∼0.4 Z _⊙ ), similar to galaxies with comparable stellar masses at much lower redshifts. The detection of strong H α lines suggests a higher ionizing photon production efficiency within galaxies in the early universe. We find brightening of the [O iii ] λ 5007 line-luminosity function (LF) from z = 3 to 6, and weak or no redshift evolution of the H α line LF from z = 2 to 6. Both LFs are underpredicted at z ∼ 6 by a factor of ∼10 in certain cosmological simulations. This further indicates a global Ly α photon escape fraction of 7%–10% at z ∼ 6, which is slightly lower than previous estimates through the comparison of the UV-derived star formation rate density and Ly α luminosity density. Our sample recovers ${66}_{-44}^{+128}$ % of z = 6.0–6.6 galaxies in the survey volume with stellar masses greater than 5 × 10 ^8 M _⊙ , suggesting the ubiquity of strong H α and [O iii ] line emitters in the Epoch of Reionization, which will be further uncovered in the era of JWST.

Published
2023
Full Text
View/download PDF

6. JADES Imaging of GN-z11: Revealing the Morphology and Environment of a Luminous Galaxy 430 Myr after the Big Bang

Author

Sandro Tacchella, Daniel J. Eisenstein, Kevin Hainline, Benjamin D. Johnson, William M. Baker, Jakob M. Helton, Brant Robertson, Katherine A. Suess, Zuyi Chen, Erica Nelson, Dávid Puskás, Fengwu Sun, Stacey Alberts, Eiichi Egami, Ryan Hausen, George Rieke, Marcia Rieke, Irene Shivaei, Christina C. Williams, Christopher N. A. Willmer, Andrew Bunker, Alex J. Cameron, Stefano Carniani, Stephane Charlot, Mirko Curti, Emma Curtis-Lake, Tobias J. Looser, Roberto Maiolino, Michael V. Maseda, Tim Rawle, Hans-Walter Rix, Renske Smit, Hannah Übler, Chris Willott, Joris Witstok, Stefi Baum, Rachana Bhatawdekar, Kristan Boyett, A. Lola Danhaive, Anna de Graaff, Ryan Endsley, Zhiyuan Ji, Jianwei Lyu, Lester Sandles, Aayush Saxena, Jan Scholtz, Michael W. Topping, and Lily Whitler

Subjects
Galaxy evolution, Galaxy formation, Galaxy structure, High-redshift galaxies, Star formation, Astrophysics, QB460-466
Abstract

We present JWST NIRCam nine-band near-infrared imaging of the luminous z = 10.6 galaxy GN-z11 from the JWST Advanced Deep Extragalactic Survey of the GOODS-N field. We find a spectral energy distribution (SED) entirely consistent with the expected form of a high-redshift galaxy: a clear blue continuum from 1.5 to 4 μ m with a complete dropout in F115W. The core of GN-z11 is extremely compact in JWST imaging. We analyze the image with a two-component model, using a point source and a Sérsic profile that fits to a half-light radius of 200 pc and an index n = 0.9. We find a low-surface-brightness haze about 0.″4 to the northeast of the galaxy, which is most likely a foreground object but might be a more extended component of GN-z11. At a spectroscopic redshift of 10.60 (Bunker et al. 2023 ), the comparison of the NIRCam F410M and F444W images spans the Balmer jump. From population-synthesis modeling, here assuming no light from an active galactic nucleus, we reproduce the SED of GN-z11, finding a stellar mass of ∼10 ^9 M _⊙ , a star formation rate of ∼20 M _⊙ yr ^−1 , and a young stellar age of ∼20 Myr. Since massive galaxies at high redshift are likely to be highly clustered, we search for faint neighbors of GN-z11, finding nine galaxies out to ∼5 comoving Mpc transverse with photometric redshifts consistent with z = 10.6, and a tenth more tentative dropout only 3″ away. This is consistent with GN-z11 being hosted by a massive dark-matter halo (≈8 × 10 ^10 M _⊙ ), though lower halo masses cannot be ruled out.

Published
2023
Full Text
View/download PDF

7. The KLEVER Survey: spatially resolved metallicity maps and gradients in a sample of 1.2 < z < 2.5 lensed galaxies

Author

Mirko Curti, Roberto Maiolino, Michele Cirasuolo, Filippo Mannucci, Rebecca J Williams, Matt Auger, Amata Mercurio, Connor Hayden-Pawson, Giovanni Cresci, Alessandro Marconi, Francesco Belfiore, Michele Cappellari, Claudia Cicone, Fergus Cullen, Massimo Meneghetti, Kazuaki Ota, Yingjie Peng, Max Pettini, Mark Swinbank, and Paulina Troncoso

Published
2019
Full Text
View/download PDF

8. JWST NIRCam + NIRSpec: interstellar medium and stellar populations of young galaxies with rising star formation and evolving gas reservoirs

Author

Sandro Tacchella, Benjamin D Johnson, Brant E Robertson, Stefano Carniani, Francesco D’Eugenio, Nimisha Kumari, Roberto Maiolino, Erica J Nelson, Katherine A Suess, Hannah Übler, Christina C Williams, Alabi Adebusola, Stacey Alberts, Santiago Arribas, Rachana Bhatawdekar, Nina Bonaventura, Rebecca A A Bowler, Andrew J Bunker, Alex J Cameron, Mirko Curti, Eiichi Egami, Daniel J Eisenstein, Brenda Frye, Kevin Hainline, Jakob M Helton, Zhiyuan Ji, Tobias J Looser, Jianwei Lyu, Michele Perna, Timothy Rawle, George Rieke, Marcia Rieke, Aayush Saxena, Lester Sandles, Irene Shivaei, Charlotte Simmonds, Fengwu Sun, Christopher N A Willmer, Chris J Willott, and Joris Witstok

Subjects
Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies
Abstract

We present an interstellar medium and stellar population analysis of three spectroscopically confirmed $z>7$ galaxies in the ERO JWST NIRCam and JWST NIRSpec data of the SMACS J0723.3-7327 cluster. We use the Bayesian spectral energy distribution (SED) fitting code \texttt{Prospector} with a flexible star-formation history (SFH), a variable dust attenuation law, and a self-consistent model of nebular emission (continuum and emission lines). Importantly, we self-consistently fit both the emission line fluxes from JWST NIRSpec and the broad-band photometry from JWST NIRCam, taking into account slit-loss effects. We find that these three $z=7.6-8.5$ galaxies ($M_{\star}\approx10^{8}~M_{\odot}$) are young with rising SFHs and mass-weighted ages of $3-4$ Myr, though we find indications for underlying older stellar populations. The inferred gas-phase metallicities broadly agree with the direct metallicity estimates from the auroral lines. The galaxy with the lowest gas-phase metallicity ($\mathrm{Z}_{\rm gas}=0.06~\mathrm{Z}_{\odot}$) has a steeply rising SFH, is very compact ($, 14 pages, 9 figures; accepted for publication in MNRAS

Published
2023

9. Unveiling hidden active nuclei in MaNGA star-forming galaxies with He <scp>ii</scp> λ4686 line emission

Author

Giulia Tozzi, Roberto Maiolino, Giovanni Cresci, Joanna M Piotrowska, Francesco Belfiore, Mirko Curti, Filippo Mannucci, and Alessandro Marconi

Subjects
Space and Planetary Science, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies
Abstract

Nebular HeII$\lambda$4686\AA~line emission is useful to unveil active galactic nuclei (AGN) residing in actively star-forming (SF) galaxies, typically missed by the standard BPT classification. Here we adopt the HeII diagnostic to identify hidden AGN in the Local Universe using for the first time spatially-resolved data from the Data Release 15 of the Mapping Nearby Galaxies at APO survey (MaNGA DR15). By combining results from HeII and BPT diagnostics, we overall select 459 AGN host candidates ($\sim$10% in MaNGA DR15), out of which 27 are identified as AGN by the HeII diagram only. The HeII-only AGN population is hosted by massive (M$_*\gtrsim10^{10}$ M$_{\odot}$) SF Main Sequence galaxies, and on average less luminous than the BPT-selected AGN. Given the HeII line faintness, we revisit our census accounting for incompleteness effects due to the HeII sensitivity limit of MaNGA. We thus obtain an overall increased fraction (11%) of AGN in MaNGA compared to the BPT-only census (9%), which further increases to 14% for galaxies more massive than $10^{10}$ M$_{\odot}$; interestingly, on the SF Main Sequence the increase is by about a factor of 2. A substantial number of AGN in SF galaxies points to significant, coeval star formation and black hole accretion, consistently with results from hydrodynamical simulations and with important implications on quenching scenarios. In view of exploring unprecedented high redshifts with JWST and new ground-based facilities, revisiting the standard BPT classification through novel emission-line diagnostics is fundamental to discover AGN in highly SF environments., Comment: 13 pages, 12 figures. Accepted for publication in MNRAS

Published
2023

11. The KLEVER survey: nitrogen abundances at z ∼ 2 and probing the existence of a fundamental nitrogen relation

Author

Connor Hayden-Pawson, Mirko Curti, Roberto Maiolino, Michele Cirasuolo, Francesco Belfiore, Michele Cappellari, Alice Concas, Giovanni Cresci, Fergus Cullen, Chiaki Kobayashi, Filippo Mannucci, Alessandro Marconi, Massimo Meneghetti, Amata Mercurio, Yingjie Peng, Mark Swinbank, and Fiorenzo Vincenzo

Subjects
Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics::Galaxy Astrophysics
Abstract

We present a comparison of the nitrogen-to-oxygen ratio (N/O) in 37 high-redshift galaxies at $z\sim$2 taken from the KMOS Lensed Emission Lines and VElocity Review (KLEVER) Survey with a comparison sample of local galaxies, taken from the Sloan Digital Sky Survey (SDSS). The KLEVER sample shows only a mild enrichment in N/O of $+$0.1 dex when compared to local galaxies at a given gas-phase metallicity (O/H), but shows a depletion in N/O of $-$0.36 dex when compared at a fixed stellar mass (M$_*$). We find a strong anti-correlation in local galaxies between N/O and SFR in the M$_*$-N/O plane, similar to the anti-correlation between O/H and SFR found in the mass-metallicity relation (MZR). We use this anti-correlation to construct a fundamental nitrogen relation (FNR), analogous to the fundamental metallicity relation (FMR). We find that KLEVER galaxies are consistent with both the FMR and the FNR. This suggests that the depletion of N/O in high-$z$ galaxies when considered at a fixed M$_*$ is driven by the redshift-evolution of the mass-metallicity relation in combination with a near redshift-invariant N/O-O/H relation. Furthermore, the existence of an fundamental nitrogen relation suggests that the mechanisms governing the fundamental metallicity relation must be probed by not only O/H, but also N/O, suggesting pure-pristine gas inflows are not the primary driver of the FMR, and other properties such as variations in galaxy age and star formation efficiency must be important., Comment: 23 pages, 11 figures, Accepted for publication in Monthly Notices of the Royal Astronomical Society

Published
2022

12. What drives the scatter of local star-forming galaxies in the BPT diagrams? A Machine Learning based analysis

Author

Mirko Curti, Connor Hayden-Pawson, Roberto Maiolino, Francesco Belfiore, Filippo Mannucci, Alice Concas, Giovanni Cresci, Alessandro Marconi, Michele Cirasuolo, Curti, M [0000-0002-2678-2560], Belfiore, F [0000-0002-2545-5752], Mannucci, F [0000-0002-4803-2381], Concas, A [0000-0003-3203-9818], and Apollo - University of Cambridge Repository

Subjects
Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), FOS: Physical sciences, galaxies: abundances, galaxies: fundamental parameters, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, galaxies: evolution, Astrophysics - Astrophysics of Galaxies, galaxies: ISM, Astrophysics::Galaxy Astrophysics
Abstract

We investigate which physical properties are most predictive of the position of local star forming galaxies on the BPT diagrams, by means of different Machine Learning (ML) algorithms. Exploiting the large statistics from the Sloan Digital Sky Survey (SDSS), we define a framework in which the deviation of star-forming galaxies from their median sequence can be described in terms of the relative variations in a variety of observational parameters. We train artificial neural networks (ANN) and random forest (RF) trees to predict whether galaxies are offset above or below the sequence (via classification), and to estimate the exact magnitude of the offset itself (via regression). We find, with high significance, that parameters primarily associated to variations in the nitrogen-over-oxygen abundance ratio (N/O) are the most predictive for the [N II]-BPT diagram, whereas properties related to star formation (like variations in SFR or EW[H$\alpha$]) perform better in the [S II]-BPT diagram. We interpret the former as a reflection of the N/O-O/H relationship for local galaxies, while the latter as primarily tracing the variation in the effective size of the S$^{+}$ emitting region, which directly impacts the [S II]emission lines. This analysis paves the way to assess to what extent the physics shaping local BPT diagrams is also responsible for the offsets seen in high redshift galaxies or, instead, whether a different framework or even different mechanisms need to be invoked., Comment: Accepted for publication on MNRAS (31 pages, 20 figures)

Published
2022

13. Stellar Population Survey Using 4MOST (4MOST-StePS)

Author

Angela, Iovino, Amata, Mercurio, Anna Rita Gallazzi, Francesco La Barbera, Marcella, Longhetti, Crescenzo, Tortora, Stefano, Zibetti, Francesco, Belfiore, Matteo, Bianconi, Giovanni, Busarello, Corsini, Enrico M., Luca, Costantin, Gabriella De Lucia, Roberto De Propris, Francesco, D’Eugenio, Fabio, Fontanot, Rubén, García-Benito, Michaela, Hirschmann, Christopher, Haines, Filippo, Mannucci, Sean, Mcgee, Paola, Merluzzi, Morelli, Lorenzo, Moretti, Alessia, Anna, Pasquali, Bianca, Poggianti, Lucia, Pozzetti, Rodighiero, Giulia, Patricia, Sánchez-Blázquez, Arjen Van Der Wel, Alexandre, Vazdekis, Vulcani, Benedetta, Anita, Zanella, Marianna, Annunziatella, Alice, Concas, Cassarà, Letizia P., Giovanni, Cresci, Mirko, Curti, Adriana De Lorenzo-Cáceres, Anna Ferre Mateu, González Delgado, Rosa M., Mancini, Chiara, Camilla, Pacifici, Enrique, Perez-Montero, Pizzella, Alessandro, Perez-Gonzalez, Pablo G., Trager, Scott C., and Daniela, Vergani

Abstract

Galaxy spectra encode in their continuum and absorption/emission features a wealth of information on galaxy physics, mass assembly and chemical enrichment history. The 4MOST-StePS survey will collect high-quality spectra (with a median signal-to-noise ratio of about 30 Å–1, and resolution R ~ 5000) for a sample of about 3300 galaxies brighter than IAB = 20.5 within the RA-Dec-z footprint of the WAVES-Deep survey. These spectra will provide a precise empirical description of the evolutionary path of massive galaxies in the intermediate redshift range (0.3 < z < 0.7) between the LEGA-C and SDSS surveys. The locations of the galaxies within the cosmic web, unveiled by WAVES-Deep, will disclose the connection between galaxy properties and environment, down to the scales of galaxy pairs., Published in The Messenger vol. 190, pp. 22-24, March 2023.

Published
2023
Full Text
View/download PDF

14. Spectroscopic confirmation of four metal-poor galaxies at z=10.3-13.2

Author

Emma Curtis-Lake, Stefano Carniani, Alex Cameron, Stephane Charlot, Peter Jakobsen, Roberto Maiolino, Andrew Bunker, Joris Witstok, Renske Smit, Jacopo Chevallard, Chris Willott, Pierre Ferruit, Santiago Arribas, Nina Bonaventura, Mirko Curti, Francesco D’Eugenio, Marijn Franx, Giovanna Giardino, Tobias J. Looser, Nora Lützgendorf, Michael V. Maseda, Tim Rawle, Hans-Walter Rix, Bruno Rodríguez del Pino, Hannah Übler, Marco Sirianni, Alan Dressler, Eiichi Egami, Daniel J. Eisenstein, Ryan Endsley, Kevin Hainline, Ryan Hausen, Benjamin D. Johnson, Marcia Rieke, Brant Robertson, Irene Shivaei, Daniel P. Stark, Sandro Tacchella, Christina C. Williams, Christopher N. A. Willmer, Rachana Bhatawdekar, Rebecca Bowler, Kristan Boyett, Zuyi Chen, Anna de Graaff, Jakob M. Helton, Raphael E. Hviding, Gareth C. Jones, Nimisha Kumari, Jianwei Lyu, Erica Nelson, Michele Perna, Lester Sandles, Aayush Saxena, Katherine A. Suess, Fengwu Sun, Michael W. Topping, Imaan E. B. Wallace, Lily Whitler, Curtis-Lake, E [0000-0002-9551-0534], Carniani, S [0000-0002-6719-380X], Cameron, A [0000-0002-0450-7306], Charlot, S [0000-0003-3458-2275], Jakobsen, P [0000-0002-6780-2441], Bunker, A [0000-0002-8651-9879], Witstok, J [0000-0002-7595-121X], Smit, R [0000-0001-8034-7802], Willott, C [0000-0002-4201-7367], Ferruit, P [0000-0001-8895-0606], Arribas, S [0000-0001-7997-1640], Curti, M [0000-0002-2678-2560], D’Eugenio, F [0000-0003-2388-8172], Looser, TJ [0000-0002-3642-2446], Lützgendorf, N [0000-0002-4034-0080], Maseda, MV [0000-0003-0695-4414], Rawle, T [0000-0002-7028-5588], Rix, HW [0000-0003-4996-9069], Übler, H [0000-0003-4891-0794], Sirianni, M [0000-0002-7626-6361], Egami, E [0000-0003-1344-9475], Eisenstein, DJ [0000-0002-2929-3121], Hausen, R [0000-0002-8543-761X], Johnson, BD [0000-0002-9280-7594], Robertson, B [0000-0002-4271-0364], Williams, CC [0000-0003-2919-7495], Willmer, CNA [0000-0001-9262-9997], Bhatawdekar, R [0000-0003-0883-2226], Bowler, R [0000-0003-3917-1678], Boyett, K [0000-0003-4109-304X], Chen, Z [0000-0002-2178-5471], de Graaff, A [0000-0002-2380-9801], Hviding, RE [0000-0002-4684-9005], Jones, GC [0000-0002-0267-9024], Kumari, N [0000-0002-5320-2568], Lyu, J [0000-0002-6221-1829], Nelson, E [0000-0002-7524-374X], Perna, M [0000-0002-0362-5941], Sandles, L [0000-0001-9276-7062], Saxena, A [0000-0001-5333-9970], Suess, KA [0000-0002-1714-1905], Whitler, L [0000-0003-1432-7744], Apollo - University of Cambridge Repository, Curtis-Lake, E., Carniani, Stefano, Cameron, Alex, Charlot, S., Jakobsen, P., Maiolino, Roberto, Bunker, A., Witstok, J., Smit, R., Chevallard, J., Willott, C., Ferruit, P., Arribas, S., Bonaventura, N., Curti, Mirko, D'Eugenio, F., Franx, M., Giardino, G., Looser, T. J., Lutzgendorf, N., Maseda, M. V., Rawle, T., Rix, H. -W., Rodriguez del Pino, B., Ubler, H., Sirianni, M., Dressler, A., Egami, E., Eisenstein, D. J., Endsley, R., Hainline, K., Hausen, R., Johnson, B. D., Rieke, M., Robertson, B., Shivaei, I., Stark, D. P., Tacchella, S., Williams, C. C., Willmer, C. N. A., Bhatawdekar, R., Bowler, Rebecca, Boyett, K., Chen, Z., de Graaff, A., Helton, J. M., Hviding, R. E., Jones, G. C., Kumari, N., Lyu, J., Nelson, E., Perna, Michele, Sandles, L., Saxena, A., Suess, K. A., Sun, F., Topping, M. W., Wallace, I. E. B., and Whitler, L.

Subjects
Settore FIS/05 - Astronomia e Astrofisica, 5101 Astronomical Sciences, Astrophysics of Galaxies (astro-ph.GA), FOS: Physical sciences, Astronomy and Astrophysics, 51 Physical Sciences, Astrophysics - Astrophysics of Galaxies
Abstract

Finding and characterising the first galaxies that illuminated the early Universe at cosmic dawn is pivotal to understand the physical conditions and the processes that led to the formation of the first stars. In the first few months of operations, imaging from the James Webb Space Telescope (JWST) have been used to identify tens of candidates of galaxies at redshift (z) greater than 10, less than 450 million years after the Big Bang. However, none of these candidates has yet been confirmed spectroscopically, leaving open the possibility that they are actually low-redshift interlopers. Here we present spectroscopic confirmation and analysis of four galaxies unambiguously detected at redshift 10.3, Comment: 32 pages, 8 figures, accepted to Nature Astronomy

Published
2022

15. The diffuse ionized gas (DIG) in star-forming galaxies: the influence of aperture effects on local H <scp>ii</scp> regions

Author

M. Mingozzi, A. Marasco, Roberto Maiolino, Francesco Belfiore, Alessandro Marconi, A. Amiri, G. Tozzi, F. Mannucci, Mirko Curti, and Giovanni Cresci

Subjects
Physics, Aperture, Metallicity, FOS: Physical sciences, Flux, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Astrophysics - Astrophysics of Galaxies, Spectral line, Galaxy, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Emission spectrum, Spectroscopy, Astrophysics::Galaxy Astrophysics, Line (formation)
Abstract

The Diffuse Ionized Gas (DIG) contributes to the nebular emission of galaxies, resulting in emission line flux ratios that can be significantly different from those produced by HII regions. Comparing the emission of [SII]6717,31 between pointed observations of HII regions in nearby galaxies and integrated spectra of more distant galaxies, it has been recently claimed that the DIG can also deeply affect the emission of bright, star-forming galaxies, and that a large correction must be applied to observed line ratios to recover the genuine contribution from HII regions. Here we show instead that the effect of DIG on the integrated spectra of star-forming galaxies is lower than assumed in previous work. Indeed, aperture effects on the spectroscopy of nearby HII regions are largely responsible for the observed difference: when spectra of local HII regions are extracted using large enough apertures while still avoiding the DIG, the observed line ratios are the same as in more distant galaxies. This result is highly relevant for the use of strong-line methods to measure metallicity., Comment: MNRAS, in press

Published
2021

16. Assessing the sources of reionization: a spectroscopic case study of a 30× lensed galaxy at z ∼ 5 with Lyα, C <scp>iv</scp>, Mg <scp>ii</scp>, and [Ne <scp>iii</scp>]

Author

Mark Swinbank, Nicolas Laporte, Mirko Curti, Johan Richard, Richard Massey, Roberto Maiolino, Renske Smit, Joris Witstok, Centre de Recherche Astrophysique de Lyon (CRAL), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Active galactic nucleus, Metallicity, first stars, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, galaxies: high-redshift, 0103 physical sciences, dark ages, 010303 astronomy & astrophysics, Reionization, Astrophysics::Galaxy Astrophysics, Physics, Very Large Telescope, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, gravitational lensing: strong, Astronomy and Astrophysics, Galaxy, Redshift, Gravitational lens, [SDU]Sciences of the Universe [physics], Space and Planetary Science, reionization, methods: observational, Equivalent width, techniques: spectroscopic
Abstract

We present a detailed spectroscopic analysis of a galaxy at z ≃ 4.88 that is, by chance, magnified ∼30× by gravitational lensing. Only three sources at z ≳ 5 are known with such high magnification. This particular source has been shown to exhibit widespread, high equivalent width ${{\rm C\, \small {IV}}}\ \lambda 1549\, \mathring{\rm A}$ emission, implying it is a unique example of a metal-poor galaxy with a hard radiation field, likely representing the galaxy population responsible for cosmic reionization. Using ultraviolet (UV) nebular line ratio diagnostics, Very Large Telescope (VLT)/X-shooter observations rule out strong active galactic nuclei (AGN) activity, indicating a stellar origin of the hard radiation field instead. We present a new detection of ${[{\rm Ne\, \small {III}}]}\ \lambda 3870\, \mathring{\rm A}$ and use the [${\rm Ne\, \small {III}}$]/[${\rm O\, \small {II}}$] line ratio to constrain the ionization parameter and gas-phase metallicity. Closely related to the commonly used [${\rm O\, \small {III}}$]/[${\rm O\, \small {II}}$] ratio, our [${\rm Ne\, \small {III}}$]/[${\rm O\, \small {II}}$] measurement shows this source is similar to local ‘Green Pea’ galaxies and Lyman-continuum leakers. It furthermore suggests this galaxy is more metal poor than expected from the fundamental metallicity relation, possibly as a consequence of excess gas accretion diluting the metallicity. Finally, we present the highest redshift detection of ${{\rm Mg\, \small {II}}}\ \lambda 2796\, \mathring{\rm A}$, observed at high equivalent width in emission, in contrast to more evolved systems predominantly exhibiting ${\rm Mg\, \small {II}}$ absorption. Strong ${\rm Mg\, \small {II}}$ emission has been observed in most z ∼ 0 Lyman-continuum leakers known and has recently been proposed as an indirect tracer of escaping ionizing radiation. In conclusion, this strongly lensed galaxy, observed just $300\, \mathrm{Myr}$ after reionization ends, enables testing of observational diagnostics proposed to constrain the physical properties of distant galaxies in the James Webb Space Telescope (JWST)/Extremely Large Telescope (ELT) era.

Published
2021

17. The chemical enrichment in the early Universe as probed by JWST via direct metallicity measurements at z~8

Author

Mirko Curti, Francesco D’Eugenio, Stefano Carniani, Roberto Maiolino, Lester Sandles, Joris Witstok, William M Baker, Jake S Bennett, Joanna M Piotrowska, Sandro Tacchella, Stephane Charlot, Kimihiko Nakajima, Gabriel Maheson, Filippo Mannucci, Amirnezam Amiri, Santiago Arribas, Francesco Belfiore, Nina R Bonaventura, Andrew J Bunker, Jacopo Chevallard, Giovanni Cresci, Emma Curtis-Lake, Connor Hayden-Pawson, Gareth C Jones, Nimisha Kumari, Isaac Laseter, Tobias J Looser, Alessandro Marconi, Michael V Maseda, Jan Scholtz, Renske Smit, Hannah Übler, Imaan E B Wallace, Curti, M., D'Eugenio, F., Carniani, S., Maiolino, R., Sandles, L., Witstok, J., Baker, W. M., Bennett, J. S., Piotrowska, J. M., Tacchella, S., Charlot, S., Nakajima, K., Maheson, G., Mannucci, F., Amiri, A., Arribas, S., Belfiore, F., Bonaventura, N. R., Bunker, A. J., Chevallard, J., Cresci, G., Curtis-Lake, E., Hayden-Pawson, C., Jones, G. C., Kumari, N., Laseter, I., Looser, T. J., Marconi, A., Maseda, M. V., Scholtz, J., Smit, R., Ubler, H., Wallace, I. E. B., Curti, Mirko [0000-0002-2678-2560], D’Eugenio, Francesco [0000-0003-2388-8172], Carniani, Stefano [0000-0002-6719-380X], Witstok, Joris [0000-0002-7595-121X], Baker, William M [0000-0003-0215-1104], Bennett, Jake S [0000-0002-8573-2993], Piotrowska, Joanna M [0000-0003-1661-2338], Tacchella, Sandro [0000-0002-8224-4505], Nakajima, Kimihiko [0000-0003-2965-5070], Mannucci, Filippo [0000-0002-4803-2381], Belfiore, Francesco [0000-0002-2545-5752], Chevallard, Jacopo [0000-0002-7636-0534], Hayden-Pawson, Connor [0000-0001-7964-1027], Kumari, Nimisha [0000-0002-5320-2568], Maseda, Michael V [0000-0003-0695-4414], Smit, Renske [0000-0001-8034-7802], Übler, Hannah [0000-0003-4891-0794], Wallace, Imaan EB [0000-0002-0695-8485], and Apollo - University of Cambridge Repository

Subjects
ISM [galaxies], ILLUSTRISTNG SIMULATIONS, FOS: Physical sciences, Astronomy and Astrophysics, LINE RATIOS, galaxies: general, Astrophysics - Astrophysics of Galaxies, EVOLUTION, STELLAR POPULATIONS, LY-ALPHA, MASS-METALLICITY, Settore FIS/05 - Astronomia e Astrofisica, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), abundances [galaxies], STAR-FORMING GALAXIES, EAGLE SIMULATIONS, ABUNDANCE, galaxies: abundances, abundance [galaxies], galaxies: evolution, MOSDEF SURVEY, galaxies: ISM, evolution [galaxies], general [galaxies]
Abstract

We analyse the chemical properties of three z~8 galaxies behind the galaxy cluster SMACS J0723.3-7327, observed as part of the Early Release Observations programme of the James Webb Space Telescope (JWST). Exploiting [O III]4363 auroral line detections in NIRSpec spectra, we robustly apply the direct Te method for the very first time at such high redshift, measuring metallicities ranging from extremely metal poor (12+log(O/H)~7) to about one-third solar. We also discuss the excitation properties of these sources, and compare them with local strong-line metallicity calibrations. We find that none of the considered diagnostics match simultaneously the observed relations between metallicity and strong-line ratios for the three sources, implying that a proper re-assessment of the calibrations may be needed at these redshifts. On the mass-metallicity plane, the two galaxies at z~7.6 (log(M*/M_sun) = 8.1, 8.7) have metallicities that are consistent with the extrapolation of the mass-metallicity relation at z~2-3, while the least massive galaxy at z~8.5 (log(M*/M_sun) = 7.8) shows instead a significantly lower metallicity . The three galaxies show different level of offset relative to the Fundamental Metallicity Relation, with two of them (at z~7.6) being marginally consistent, while the z~8.5 source deviating significantly, being probably far from the smooth equilibrium between gas flows, star formation and metal enrichment in place at later epochs., 13 pages, 7 figures. Accepted for publication on MNRAS

Published
2022

18. Being KLEVER at cosmic noon: ionised gas outflows are inconspicuous in low-mass star-forming galaxies but prominent in massive AGN hosts

Author

Alice Concas, Roberto Maiolino, Mirko Curti, Connor Hayden-Pawson, Michele Cirasuolo, Gareth C Jones, Amata Mercurio, Francesco Belfiore, Giovanni Cresci, Fergus Cullen, Filippo Mannucci, Alessandro Marconi, Michele Cappellari, Claudia Cicone, Yingjie Peng, Paulina Troncoso, Concas, A [0000-0003-3203-9818], Hayden-Pawson, C [0000-0001-7964-1027], Belfiore, F [0000-0002-2545-5752], Cullen, F [0000-0002-3736-476X], Mannucci, F [0000-0002-4803-2381], Cappellari, M [0000-0002-1283-8420], Troncoso, P [0000-0001-6162-3023], and Apollo - University of Cambridge Repository

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics - Astrophysics of Galaxies, galaxies: high-redshift, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, galaxies: evolution, galaxies: ISM, galaxies: kinematics and dynamics, Astrophysics::Galaxy Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We investigate the presence of ionised gas outflows in a sample of 141 main-sequence star-forming galaxies at $1.2 10.8$, AGN-dominated galaxies, suggesting that AGNs may be the primary drivers of these gas flows. Surprisingly, at $\log(M_\star/M_{\odot})\leq 9.6$, the observed line profiles are fully consistent with a rotating disc model, indicating that ionised gas outflows in dwarf galaxies might play a negligible role even during the peak of cosmic star-formation activity. Finally, we find that the observed mass loading factor scales with stellar mass as expected from the TNG50 cosmological simulation, but the ionised gas mass accounts for only 2$\%$ of the predicted value. This suggests that either the bulk of the outflowing mass is in other gaseous phases or the current feedback models implemented in cosmological simulations need to be revised., Comment: Accepted for publication in MNRAS, 28 pages, 20 figures

Published
2022

19. The Science Performance of JWST as Characterized in Commissioning

Author

Jane Rigby, Marshall Perrin, Michael McElwain, Randy Kimble, Scott Friedman, Matt Lallo, René Doyon, Lee Feinberg, Pierre Ferruit, Alistair Glasse, Marcia Rieke, George Rieke, Gillian Wright, Chris Willott, Knicole Colon, Stefanie Milam, Susan Neff, Christopher Stark, Jeff Valenti, Jim Abell, Faith Abney, Yasin Abul-Huda, D. Scott Acton, Evan Adams, David Adler, Jonathan Aguilar, Nasif Ahmed, Loïc Albert, Stacey Alberts, David Aldridge, Marsha Allen, Martin Altenburg, Javier Álvarez-Márquez, Catarina Alves de Oliveira, Greg Andersen, Harry Anderson, Sara Anderson, Ioannis Argyriou, Amber Armstrong, Santiago Arribas, Etienne Artigau, Amanda Arvai, Charles Atkinson, Gregory Bacon, Thomas Bair, Kimberly Banks, Jaclyn Barrientes, Bruce Barringer, Peter Bartosik, William Bast, Pierre Baudoz, Thomas Beatty, Katie Bechtold, Tracy Beck, Eddie Bergeron, Matthew Bergkoetter, Rachana Bhatawdekar, Stephan Birkmann, Ronald Blazek, Claire Blome, Anthony Boccaletti, Torsten Böker, John Boia, Nina Bonaventura, Nicholas Bond, Kari Bosley, Ray Boucarut, Matthew Bourque, Jeroen Bouwman, Gary Bower, Charles Bowers, Martha Boyer, Larry Bradley, Greg Brady, Hannah Braun, David Breda, Pamela Bresnahan, Stacey Bright, Christopher Britt, Asa Bromenschenkel, Brian Brooks, Keira Brooks, Bob Brown, Matthew Brown, Patricia Brown, Andy Bunker, Matthew Burger, Howard Bushouse, Steven Cale, Alex Cameron, Peter Cameron, Alicia Canipe, James Caplinger, Francis Caputo, Mihai Cara, Larkin Carey, Stefano Carniani, Maria Carrasquilla, Margaret Carruthers, Michael Case, Riggs Catherine, Don Chance, George Chapman, Stéphane Charlot, Brian Charlow, Pierre Chayer, Bin Chen, Brian Cherinka, Sarah Chichester, Zack Chilton, Taylor Chonis, Mark Clampin, Charles Clark, Kerry Clark, Dan Coe, Benee Coleman, Brian Comber, Tom Comeau, Dennis Connolly, James Cooper, Rachel Cooper, Eric Coppock, Matteo Correnti, Christophe Cossou, Alain Coulais, Laura Coyle, Misty Cracraft, Mirko Curti, Steven Cuturic, Katherine Davis, Michael Davis, Bruce Dean, Amy DeLisa, Wim deMeester, Nadia Dencheva, Nadezhda Dencheva, Joseph DePasquale, Jeremy Deschenes, Örs Hunor Detre, Rosa Diaz, Dan Dicken, Audrey DiFelice, Matthew Dillman, William Dixon, Jesse Doggett, Tom Donaldson, Rob Douglas, Kimberly DuPrie, Jean Dupuis, John Durning, Nilufar Easmin, Weston Eck, Chinwe Edeani, Eiichi Egami, Ralf Ehrenwinkler, Jonathan Eisenhamer, Michael Eisenhower, Michelle Elie, James Elliott, Kyle Elliott, Tracy Ellis, Michael Engesser, Nestor Espinoza, Odessa Etienne, Mireya Etxaluze, Patrick Falini, Matthew Feeney, Malcolm Ferry, Joseph Filippazzo, Brian Fincham, Mees Fix, Nicolas Flagey, Michael Florian, Jim Flynn, Erin Fontanella, Terrance Ford, Peter Forshay, Ori Fox, David Franz, Henry Fu, Alexander Fullerton, Sergey Galkin, Anthony Galyer, Macarena García Marín, Jonathan P. Gardner, Lisa Gardner, Dennis Garland, Bruce Garrett, Danny Gasman, Andras Gaspar, Daniel Gaudreau, Peter Gauthier, Vincent Geers, Paul Geithner, Mario Gennaro, Giovanna Giardino, Julien Girard, Mark Giuliano, Kirk Glassmire, Adrian Glauser, Stuart Glazer, John Godfrey, David Golimowski, David Gollnitz, Fan Gong, Shireen Gonzaga, Michael Gordon, Karl Gordon, Paul Goudfrooij, Thomas Greene, Matthew Greenhouse, Stefano Grimaldi, Andrew Groebner, Timothy Grundy, Pierre Guillard, Irvin Gutman, Kong Q. Ha, Peter Haderlein, Andria Hagedorn, Kevin Hainline, Craig Haley, Maryam Hami, Forrest Hamilton, Heidi Hammel, Carl Hansen, Tom Harkins, Michael Harr, Jessica Hart, Quyen Hart, George Hartig, Ryan Hashimoto, Sujee Haskins, William Hathaway, Keith Havey, Brian Hayden, Karen Hecht, Chris Heller-Boyer, Caroline Henriques, Alaina Henry, Karl Hermann, Scarlin Hernandez, Brigette Hesman, Brian Hicks, Bryan Hilbert, Dean Hines, Melissa Hoffman, Sherie Holfeltz, Bryan J. Holler, Jennifer Hoppa, Kyle Hott, Joseph M. Howard, Rick Howard, Alexander Hunter, David Hunter, Brendan Hurst, Bernd Husemann, Leah Hustak, Luminita Ilinca Ignat, Garth Illingworth, Sandra Irish, Wallace Jackson, Amir Jahromi, Peter Jakobsen, LeAndrea James, Bryan James, William Januszewski, Ann Jenkins, Hussein Jirdeh, Phillip Johnson, Timothy Johnson, Vicki Jones, Ron Jones, Danny Jones, Olivia Jones, Ian Jordan, Margaret Jordan, Sarah Jurczyk, Alden Jurling, Catherine Kaleida, Phillip Kalmanson, Jens Kammerer, Huijo Kang, Shaw-Hong Kao, Diane Karakla, Patrick Kavanagh, Doug Kelly, Sarah Kendrew, Herbert Kennedy, Deborah Kenny, Ritva Keski-kuha, Charles Keyes, Richard Kidwell, Wayne Kinzel, Jeff Kirk, Mark Kirkpatrick, Danielle Kirshenblat, Pamela Klaassen, Bryan Knapp, J. Scott Knight, Perry Knollenberg, Robert Koehler, Anton Koekemoer, Aiden Kovacs, Trey Kulp, Nimisha Kumari, Mark Kyprianou, Stephanie La Massa, Aurora Labador, Alvaro Labiano, Pierre-Olivier Lagage, Charles-Philippe Lajoie, Matthew Lallo, May Lam, Tracy Lamb, Scott Lambros, Richard Lampenfield, James Langston, Kirsten Larson, David Law, Jon Lawrence, David Lee, Jarron Leisenring, Kelly Lepo, Michael Leveille, Nancy Levenson, Marie Levine, Zena Levy, Dan Lewis, Hannah Lewis, Mattia Libralato, Paul Lightsey, Miranda Link, Lily Liu, Amy Lo, Alexandra Lockwood, Ryan Logue, Chris Long, Douglas Long, Charles Loomis, Marcos Lopez-Caniego, Jose Lorenzo Alvarez, Jennifer Love-Pruitt, Adrian Lucy, Nora Luetzgendorf, Peiman Maghami, Roberto Maiolino, Melissa Major, Sunita Malla, Eliot Malumuth, Elena Manjavacas, Crystal Mannfolk, Amanda Marrione, Anthony Marston, André Martel, Marc Maschmann, Gregory Masci, Michaela Masciarelli, Michael Maszkiewicz, John Mather, Kenny McKenzie, Brian McLean, Matthew McMaster, Katie Melbourne, Marcio Meléndez, Michael Menzel, Kaiya Merz, Michele Meyett, Luis Meza, Cherie Miskey, Karl Misselt, Christopher Moller, Jane Morrison, Ernie Morse, Harvey Moseley, Gary Mosier, Matt Mountain, Julio Mueckay, Michael Mueller, Susan Mullally, Jess Murphy, Katherine Murray, Claire Murray, David Mustelier, James Muzerolle, Matthew Mycroft, Richard Myers, Kaila Myrick, Shashvat Nanavati, Elizabeth Nance, Omnarayani Nayak, Bret Naylor, Edmund Nelan, Bryony Nickson, Alethea Nielson, Maria Nieto-Santisteban, Nikolay Nikolov, Alberto Noriega-Crespo, Brian O’Shaughnessy, Brian O’Sullivan, William Ochs, Patrick Ogle, Brenda Oleszczuk, Joseph Olmsted, Shannon Osborne, Richard Ottens, Beverly Owens, Camilla Pacifici, Alyssa Pagan, James Page, Sang Park, Keith Parrish, Polychronis Patapis, Lee Paul, Tyler Pauly, Cheryl Pavlovsky, Andrew Pedder, Matthew Peek, Maria Pena-Guerrero, Konstantin Penanen, Yesenia Perez, Michele Perna, Beth Perriello, Kevin Phillips, Martin Pietraszkiewicz, Jean-Paul Pinaud, Norbert Pirzkal, Joseph Pitman, Aidan Piwowar, Vera Platais, Danielle Player, Rachel Plesha, Joe Pollizi, Ethan Polster, Klaus Pontoppidan, Blair Porterfield, Charles Proffitt, Laurent Pueyo, Christine Pulliam, Brian Quirt, Irma Quispe Neira, Rafael Ramos Alarcon, Leah Ramsay, Greg Rapp, Robert Rapp, Bernard Rauscher, Swara Ravindranath, Timothy Rawle, Michael Regan, Timothy A. Reichard, Carl Reis, Michael E. Ressler, Armin Rest, Paul Reynolds, Timothy Rhue, Karen Richon, Emily Rickman, Michael Ridgaway, Christine Ritchie, Hans-Walter Rix, Massimo Robberto, Gregory Robinson, Michael Robinson, Orion Robinson, Frank Rock, David Rodriguez, Bruno Rodriguez Del Pino, Thomas Roellig, Scott Rohrbach, Anthony Roman, Fred Romelfanger, Perry Rose, Anthony Roteliuk, Marc Roth, Braden Rothwell, Neil Rowlands, Arpita Roy, Pierre Royer, Patricia Royle, Chunlei Rui, Peter Rumler, Joel Runnels, Melissa Russ, Zafar Rustamkulov, Grant Ryden, Holly Ryer, Modhumita Sabata, Derek Sabatke, Elena Sabbi, Bridget Samuelson, Benjamin Sapp, Bradley Sappington, B. Sargent, Arne Sauer, Silvia Scheithauer, Everett Schlawin, Joseph Schlitz, Tyler Schmitz, Analyn Schneider, Jürgen Schreiber, Vonessa Schulze, Ryan Schwab, John Scott, Kenneth Sembach, Clare Shanahan, Bryan Shaughnessy, Richard Shaw, Nanci Shawger, Christopher Shay, Evan Sheehan, Sharon Shen, Allan Sherman, Bernard Shiao, Hsin-Yi Shih, Irene Shivaei, Matthew Sienkiewicz, David Sing, Marco Sirianni, Anand Sivaramakrishnan, Joy Skipper, G. C. Sloan, Christine Slocum, Steven Slowinski, Erin Smith, Eric Smith, Denise Smith, Corbett Smith, Gregory Snyder, Warren Soh, Sangmo Tony Sohn, Christian Soto, Richard Spencer, Scott Stallcup, John Stansberry, Carl Starr, Elysia Starr, Alphonso Stewart, Massimo Stiavelli, Amber Straughn, David Strickland, Jeff Stys, Francis Summers, Fengwu Sun, Ben Sunnquist, Daryl Swade, Michael Swam, Robert Swaters, Robby Swoish, Joanna M. Taylor, Rolanda Taylor, Maurice Te Plate, Mason Tea, Kelly Teague, Randal Telfer, Tea Temim, Deepashri Thatte, Christopher Thompson, Linda Thompson, Shaun Thomson, Tuomo Tikkanen, William Tippet, Connor Todd, Sharon Toolan, Hien Tran, Edwin Trejo, Justin Truong, Chris Tsukamoto, Samuel Tustain, Harrison Tyra, Leonardo Ubeda, Kelli Underwood, Michael Uzzo, Julie Van Campen, Thomas Vandal, Bart Vandenbussche, Begoña Vila, Kevin Volk, Glenn Wahlgren, Mark Waldman, Chanda Walker, Michel Wander, Christine Warfield, Gerald Warner, Matthew Wasiak, Mitchell Watkins, Andrew Weaver, Mark Weilert, Nick Weiser, Ben Weiss, Sarah Weissman, Alan Welty, Garrett West, Lauren Wheate, Elizabeth Wheatley, Thomas Wheeler, Rick White, Kevin Whiteaker, Paul Whitehouse, Jennifer Whiteleather, William Whitman, Christina Williams, Christopher Willmer, Scott Willoughby, Andrew Wilson, Gregory Wirth, Emily Wislowski, Erin Wolf, David Wolfe, Schuyler Wolff, Bill Workman, Ray Wright, Carl Wu, Rai Wu, Kristen Wymer, Kayla Yates, Christopher Yeager, Jared Yeates, Ethan Yerger, Jinmi Yoon, Alice Young, Susan Yu, Dean Zak, Peter Zeidler, Julia Zhou, Thomas Zielinski, Cristian Zincke, Stephanie Zonak, Rigby, J., Perrin, M., Mcelwain, M., Kimble, R., Friedman, S., Lallo, M., Doyon, R., Feinberg, L., Ferruit, P., Glasse, A., Rieke, M., Rieke, G., Wright, G., Willott, C., Colon, K., Milam, S., Neff, S., Stark, C., Valenti, J., Abell, J., Abney, F., Abul-Huda, Y., Scott Acton, D., Adams, E., Adler, D., Aguilar, J., Ahmed, N., Albert, L., Alberts, S., Aldridge, D., Allen, M., Altenburg, M., Alvarez-Marquez, J., Alves de Oliveira, C., Andersen, G., Anderson, H., Anderson, S., Argyriou, I., Armstrong, A., Arribas, S., Artigau, E., Arvai, A., Atkinson, C., Bacon, G., Bair, T., Banks, K., Barrientes, J., Barringer, B., Bartosik, P., Bast, W., Baudoz, P., Beatty, T., Bechtold, K., Beck, T., Bergeron, E., Bergkoetter, M., Bhatawdekar, R., Birkmann, S., Blazek, R., Blome, C., Boccaletti, A., Boker, T., Boia, J., Bonaventura, N., Bond, N., Bosley, K., Boucarut, R., Bourque, M., Bouwman, J., Bower, G., Bowers, C., Boyer, M., Bradley, L., Brady, G., Braun, H., Breda, D., Bresnahan, P., Bright, S., Britt, C., Bromenschenkel, A., Brooks, B., Brooks, K., Brown, B., Brown, M., Brown, P., Bunker, A., Burger, M., Bushouse, H., Cale, S., Cameron, A., Cameron, P., Canipe, A., Caplinger, J., Caputo, F., Cara, M., Carey, L., Carniani, S., Carrasquilla, M., Carruthers, M., Case, M., Catherine, R., Chance, D., Chapman, G., Charlot, S., Charlow, B., Chayer, P., Chen, B., Cherinka, B., Chichester, S., Chilton, Z., Chonis, T., Clampin, M., Clark, C., Clark, K., Coe, D., Coleman, B., Comber, B., Comeau, T., Connolly, D., Cooper, J., Cooper, R., Coppock, E., Correnti, M., Cossou, C., Coulais, A., Coyle, L., Cracraft, M., Curti, M., Cuturic, S., Davis, K., Davis, M., Dean, B., Delisa, A., Demeester, W., Dencheva, N., Depasquale, J., Deschenes, J., Hunor Detre, I., Diaz, R., Dicken, D., Difelice, A., Dillman, M., Dixon, W., Doggett, J., Donaldson, T., Douglas, R., Duprie, K., Dupuis, J., Durning, J., Easmin, N., Eck, W., Edeani, C., Egami, E., Ehrenwinkler, R., Eisenhamer, J., Eisenhower, M., Elie, M., Elliott, J., Elliott, K., Ellis, T., Engesser, M., Espinoza, N., Etienne, O., Etxaluze, M., Falini, P., Feeney, M., Ferry, M., Filippazzo, J., Fincham, B., Fix, M., Flagey, N., Florian, M., Flynn, J., Fontanella, E., Ford, T., Forshay, P., Fox, O., Franz, D., Fu, H., Fullerton, A., Galkin, S., Galyer, A., Garcia Marin, M., Gardner, J. P., Gardner, L., Garland, D., Garrett, B., Gasman, D., Gaspar, A., Gaudreau, D., Gauthier, P., Geers, V., Geithner, P., Gennaro, M., Giardino, G., Girard, J., Giuliano, M., Glassmire, K., Glauser, A., Glazer, S., Godfrey, J., Golimowski, D., Gollnitz, D., Gong, F., Gonzaga, S., Gordon, M., Gordon, K., Goudfrooij, P., Greene, T., Greenhouse, M., Grimaldi, S., Groebner, A., Grundy, T., Guillard, P., Gutman, I., Ha, K. Q., Haderlein, P., Hagedorn, A., Hainline, K., Haley, C., Hami, M., Hamilton, F., Hammel, H., Hansen, C., Harkins, T., Harr, M., Hart, J., Hart, Q., Hartig, G., Hashimoto, R., Haskins, S., Hathaway, W., Havey, K., Hayden, B., Hecht, K., Heller-Boyer, C., Henriques, C., Henry, A., Hermann, K., Hernandez, S., Hesman, B., Hicks, B., Hilbert, B., Hines, D., Hoffman, M., Holfeltz, S., Holler, B. J., Hoppa, J., Hott, K., Howard, J. M., Howard, R., Hunter, A., Hunter, D., Hurst, B., Husemann, B., Hustak, L., Ilinca Ignat, L., Illingworth, G., Irish, S., Jackson, W., Jahromi, A., Jakobsen, P., James, L., James, B., Januszewski, W., Jenkins, A., Jirdeh, H., Johnson, P., Johnson, T., Jones, V., Jones, R., Jones, D., Jones, O., Jordan, I., Jordan, M., Jurczyk, S., Jurling, A., Kaleida, C., Kalmanson, P., Kammerer, J., Kang, H., Kao, S. -H., Karakla, D., Kavanagh, P., Kelly, D., Kendrew, S., Kennedy, H., Kenny, D., Keski-Kuha, R., Keyes, C., Kidwell, R., Kinzel, W., Kirk, J., Kirkpatrick, M., Kirshenblat, D., Klaassen, P., Knapp, B., Scott Knight, J., Knollenberg, P., Koehler, R., Koekemoer, A., Kovacs, A., Kulp, T., Kumari, N., Kyprianou, M., La Massa, S., Labador, A., Labiano, A., Lagage, P. -O., Lajoie, C. -P., Lam, M., Lamb, T., Lambros, S., Lampenfield, R., Langston, J., Larson, K., Law, D., Lawrence, J., Lee, D., Leisenring, J., Lepo, K., Leveille, M., Levenson, N., Levine, M., Levy, Z., Lewis, D., Lewis, H., Libralato, M., Lightsey, P., Link, M., Liu, L., Lo, A., Lockwood, A., Logue, R., Long, C., Long, D., Loomis, C., Lopez-Caniego, M., Lorenzo Alvarez, J., Love-Pruitt, J., Lucy, A., Luetzgendorf, N., Maghami, P., Maiolino, R., Major, M., Malla, S., Malumuth, E., Manjavacas, E., Mannfolk, C., Marrione, A., Marston, A., Martel, A., Maschmann, M., Masci, G., Masciarelli, M., Maszkiewicz, M., Mather, J., Mckenzie, K., Mclean, B., Mcmaster, M., Melbourne, K., Melendez, M., Menzel, M., Merz, K., Meyett, M., Meza, L., Miskey, C., Misselt, K., Moller, C., Morrison, J., Morse, E., Moseley, H., Mosier, G., Mountain, M., Mueckay, J., Mueller, M., Mullally, S., Murphy, J., Murray, K., Murray, C., Mustelier, D., Muzerolle, J., Mycroft, M., Myers, R., Myrick, K., Nanavati, S., Nance, E., Nayak, O., Naylor, B., Nelan, E., Nickson, B., Nielson, A., Nieto-Santisteban, M., Nikolov, N., Noriega-Crespo, A., O'Shaughnessy, B., O'Sullivan, B., Ochs, W., Ogle, P., Oleszczuk, B., Olmsted, J., Osborne, S., Ottens, R., Owens, B., Pacifici, C., Pagan, A., Page, J., Park, S., Parrish, K., Patapis, P., Paul, L., Pauly, T., Pavlovsky, C., Pedder, A., Peek, M., Pena-Guerrero, M., Penanen, K., Perez, Y., Perna, M., Perriello, B., Phillips, K., Pietraszkiewicz, M., Pinaud, J. -P., Pirzkal, N., Pitman, J., Piwowar, A., Platais, V., Player, D., Plesha, R., Pollizi, J., Polster, E., Pontoppidan, K., Porterfield, B., Proffitt, C., Pueyo, L., Pulliam, C., Quirt, B., Quispe Neira, I., Ramos Alarcon, R., Ramsay, L., Rapp, G., Rapp, R., Rauscher, B., Ravindranath, S., Rawle, T., Regan, M., Reichard, T. A., Reis, C., Ressler, M. E., Rest, A., Reynolds, P., Rhue, T., Richon, K., Rickman, E., Ridgaway, M., Ritchie, C., Rix, H. -W., Robberto, M., Robinson, G., Robinson, M., Robinson, O., Rock, F., Rodriguez, D., Rodriguez Del Pino, B., Roellig, T., Rohrbach, S., Roman, A., Romelfanger, F., Rose, P., Roteliuk, A., Roth, M., Rothwell, B., Rowlands, N., Roy, A., Royer, P., Royle, P., Rui, C., Rumler, P., Runnels, J., Russ, M., Rustamkulov, Z., Ryden, G., Ryer, H., Sabata, M., Sabatke, D., Sabbi, E., Samuelson, B., Sapp, B., Sappington, B., Sargent, B., Sauer, A., Scheithauer, S., Schlawin, E., Schlitz, J., Schmitz, T., Schneider, A., Schreiber, J., Schulze, V., Schwab, R., Scott, J., Sembach, K., Shanahan, C., Shaughnessy, B., Shaw, R., Shawger, N., Shay, C., Sheehan, E., Shen, S., Sherman, A., Shiao, B., Shih, H. -Y., Shivaei, I., Sienkiewicz, M., Sing, D., Sirianni, M., Sivaramakrishnan, A., Skipper, J., Sloan, G. C., Slocum, C., Slowinski, S., Smith, E., Smith, D., Smith, C., Snyder, G., Soh, W., Tony Sohn, S., Soto, C., Spencer, R., Stallcup, S., Stansberry, J., Starr, C., Starr, E., Stewart, A., Stiavelli, M., Straughn, A., Strickland, D., Stys, J., Summers, F., Sun, F., Sunnquist, B., Swade, D., Swam, M., Swaters, R., Swoish, R., Taylor, J. M., Taylor, R., Te Plate, M., Tea, M., Teague, K., Telfer, R., Temim, T., Thatte, D., Thompson, C., Thompson, L., Thomson, S., Tikkanen, T., Tippet, W., Todd, C., Toolan, S., Tran, H., Trejo, E., Truong, J., Tsukamoto, C., Tustain, S., Tyra, H., Ubeda, L., Underwood, K., Uzzo, M., Van Campen, J., Vandal, T., Vandenbussche, B., Vila, B., Volk, K., Wahlgren, G., Waldman, M., Walker, C., Wander, M., Warfield, C., Warner, G., Wasiak, M., Watkins, M., Weaver, A., Weilert, M., Weiser, N., Weiss, B., Weissman, S., Welty, A., West, G., Wheate, L., Wheatley, E., Wheeler, T., White, R., Whiteaker, K., Whitehouse, P., Whiteleather, J., Whitman, W., Williams, C., Willmer, C., Willoughby, S., Wilson, A., Wirth, G., Wislowski, E., Wolf, E., Wolfe, D., Wolff, S., Workman, B., Wright, R., Wu, C., Wu, R., Wymer, K., Yates, K., Yeager, C., Yeates, J., Yerger, E., Yoon, J., Young, A., Yu, S., Zak, D., Zeidler, P., Zhou, J., Zielinski, T., Zincke, C., Zonak, S., and bibliotheque, la.

Subjects
Science & Technology, Observatories, Infrared astronomy, Astronomical instrumentation, INFRARED SPECTROGRAPH NIRSPEC, FOS: Physical sciences, Astronomy and Astrophysics, Astronomy & Astrophysics, Settore FIS/05 - Astronomia e Astrofisica, Space and Planetary Science, Physical Sciences, Astrophysics - Instrumentation and Methods for Astrophysics, [PHYS.ASTR] Physics [physics]/Astrophysics [astro-ph], Instrumentation and Methods for Astrophysics (astro-ph.IM)
Abstract

This paper characterizes the actual science performance of the James Webb Space Telescope (JWST), as determined from the six month commissioning period. We summarize the performance of the spacecraft, telescope, science instruments, and ground system, with an emphasis on differences from pre-launch expectations. Commissioning has made clear that JWST is fully capable of achieving the discoveries for which it was built. Moreover, almost across the board, the science performance of JWST is better than expected; in most cases, JWST will go deeper faster than expected. The telescope and instrument suite have demonstrated the sensitivity, stability, image quality, and spectral range that are necessary to transform our understanding of the cosmos through observations spanning from near-earth asteroids to the most distant galaxies., Comment: 5th version as accepted to PASP; 31 pages, 18 figures; https://iopscience.iop.org/article/10.1088/1538-3873/acb293

Published
2022
Full Text
View/download PDF

20. The extension of the Fundamental Metallicity Relation beyond the BPT star-forming sequence: evidence for both gas accretion and starvation

Author

Filippo Mannucci, Francesco Belfiore, Alessandro Marconi, Nimisha Kumari, James Trussler, Giovanni Cresci, Roberto Maiolino, Mirko Curti, Maiolino, Roberto [0000-0002-4985-3819], Curti, Mirko [0000-0002-2678-2560], and Apollo - University of Cambridge Repository

Subjects
Stellar mass, Metallicity, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Star (graph theory), 01 natural sciences, 0103 physical sciences, evolution, galaxies, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, ISM, Astrophysics::Galaxy Astrophysics, Line (formation), Physics, 010308 nuclear & particles physics, Star formation, abundances, Gas supply, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Accretion (astrophysics), Galaxy, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA)
Abstract

The fundamental metallicity relation (FMR) of galaxies is a 3D relation between the gas-phase metallicity, stellar mass and star-formation rate (SFR). It has been studied so far only for galaxies identified as star-forming (SF) on the BPT diagrams (BPT-SF), but not for galaxies with LI(N)ER/AGN classification (BPT-non-SF), mainly due to the lack of diagnostics for estimating their gas-phase metallicities in the latter cases. We extend the FMR to BPT-non-SF galaxies. To this end, we exploit the recent nebular line empirical calibrations derived specifically for galaxies classified as non-SF in the BPT diagrams. Moreover, we study an alternative representation of the FMR where we consider the offsets in metallicity and SFR with respect to Main Sequence (MS) galaxies. We find that galaxies with SFR higher than the MS are more metal-poor than their counterparts on the MS, which is interpreted in terms of gas accretion, boosting star formation and diluting the metallicity. Low-mass galaxies below the MS (i.e. towards quiescence) have metallicities higher than their MS counterparts, which is interpreted in terms of starvation, (i.e. suppression of fresh gas supply) hampering star formation and reducing the dilution effect, hence resulting in a higher level of internal chemical enrichment. Massive galaxies below the MS have gas metallicity much closer to their MS counterparts and much lower than expected from their stellar metallicities; this result suggests a scenario where massive nearly-quiescent galaxies with LI(N)ER-like nebular emission have recently accreted gas from the circum/intergalactic medium., 11 pages, 5 figures, Accepted for publication in A&A

Published
2021

21. Space Project for Astrophysical and Cosmological Exploration (SPACE), an ESA stand-alone mission and a possible contribution to the Origins Space Telescope

Author

Sylvie Cabrit, Katarzyna Małek, Jose Afonso, Jose Miguel Rodriguez Espinosa, Filippo Mannucci, Roberto Maiolino, Laure Ciesla, David J. Rosario, Hakim Atek, Itsuki Sakon, Pascal Oesch, David Sobral, Chris P. Pearson, Rychard Bouwens, Frederic Zamkotsian, Marc Ferrari, Andrew Bunker, Nadège Lagarde, Jesús Gallego Maestro, Laurent Pagani, Giovanni Cresci, Ray M. Sharples, Marc Audard, Mirko Curti, Christopher J. Conselice, J. Montillaud, Agnieszka Pollo, Denis Burgarella, Daniel Schaerer, Asantha Cooray, Karina Caputi, Chiaki Kobayashi, Céline Reylé, Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Burgarella, D [0000-0002-4193-2539], Apollo - University of Cambridge Repository, Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA (UMR_8112)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Univers, Transport, Interfaces, Nanostructures, Atmosphère et environnement, Molécules (UMR 6213) (UTINAM), Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), Astronomy, Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique et Atmosphères = Laboratory for Studies of Radiation and Matter in Astrophysics and Atmospheres (LERMA), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), and Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Milky Way, First dust grains, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, 7. Clean energy, Spitzer Space Telescope, Reionization, 0103 physical sciences, First galaxies, Galaxy formation and evolution, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010303 astronomy & astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Astrophysics::Galaxy Astrophysics, Luminosity function (astronomy), First stars, Physics, Supermassive black hole, 010308 nuclear & particles physics, Extragalactic astrophysics, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Galaxy, Redshift, Cosmology, 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Astrophysics::Earth and Planetary Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We propose a new mission called Space Project for Astrophysical and Cosmological Exploration (SPACE) as part on the ESA long term planning Voyage 2050 programme. SPACE will study galaxy evolution at the earliest times, with the key goals of charting the formation of the heavy elements, measuring the evolution of the galaxy luminosity function, tracing the build-up of stellar mass in galaxies over cosmic time, and finding the first super-massive black holes (SMBHs) to form. The mission will exploit a unique region of the parameter space, between the narrow ultra-deep surveys with HST and JWST, and shallow wide-field surveys such as Roman Space Telescope and EUCLID, and should yield by far the largest sample of any current or planned mission of very high redshift galaxies at z > 10 which are sufficiently bright for detailed follow-up spectroscopy. Crucially, we propose a wide-field spectroscopic near-IR + mid-IR capability which will greatly enhance our understanding of the first galaxies by detecting and identifying a statistical sample of the first galaxies and the first SMBH, and to chart the metal enrichment history of galaxies in the early Universe - potentially finding signatures of the very first stars to form from metal-free primordial gas. The wide-field and wavelength range of SPACE will also provide us a unique opportunity to study star formation by performing a wide survey of the Milky Way in the near-IR + mid-IR. This science project can be enabled either by a stand-alone ESA-led M mission or by an instrument for an L mission (with ESA and/or NASA, JAXA and other international space agencies) with a wide-field (sub-)millimetre capability at wavelength > 500 microns., Submitted to Experimental Astronomy as one of the proposals for the European Space Agency Voyage 2050 Programme

Published
2020

22. The KLEVER Survey: spatially resolved metallicity maps and gradients in a sample of 1.2 < z < 2.5 lensed galaxies

Author

Massimo Meneghetti, Michele Cirasuolo, Filippo Mannucci, Matt Auger, Mirko Curti, Connor Hayden-Pawson, Roberto Maiolino, P. Troncoso, Francesco Belfiore, Kazuaki Ota, Giovanni Cresci, Michele Cappellari, Mark Swinbank, Alessandro Marconi, Amata Mercurio, Yingjie Peng, C. Cicone, Rebecca J. Williams, Fergus Cullen, Max Pettini, ITA, GBR, and DEU

Subjects
Physics, 010308 nuclear & particles physics, Star formation, Metallicity, Spatially resolved, Astronomy and Astrophysics, Plasma, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Astrophysics - Astrophysics of Galaxies, Accretion (astrophysics), Galaxy, Space and Planetary Science, 0103 physical sciences, Emission spectrum, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

We present near-infrared observations of 42 gravitationally lensed galaxies obtained in the framework of the KMOS Lensed Emission Lines and VElocity Review (KLEVER) Survey, a program aimed at investigating the spatially resolved properties of the ionised gas in 1.2 3$\sigma$) "inverted" gradients are also found, showing an anti-correlation between metallicity and star formation rate density on local scales, possibly suggesting recent episodes of pristine gas accretion or strong radial flows in place. Nevertheless, the individual metallicity maps are characterised by a variety of different morphologies, with flat radial gradients sometimes hiding non-axisymmetric variations on kpc scales which are washed out by azimuthal averages, especially in interacting systems or in those undergoing local episodes of recent star formation., Comment: Main text: 23 pages, 11 figures. Appendix: 12 pages, 11 figures. Accepted for publication on MNRAS

Published
2020

23. The Mass-Metallicity and the Fundamental Metallicity Relation revisited on a fully Te-based abundance scale for galaxies

Author

Filippo Mannucci, Roberto Maiolino, Mirko Curti, Giovanni Cresci, Curti, Mirko [0000-0002-2678-2560], Maiolino, Roberto [0000-0002-4985-3819], and Apollo - University of Cambridge Repository

Subjects
Scale (ratio), Stellar mass, Metallicity, media_common.quotation_subject, astro-ph.GA, Population, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, 0103 physical sciences, education, 010303 astronomy & astrophysics, Scaling, Astrophysics::Galaxy Astrophysics, media_common, Physics, education.field_of_study, 010308 nuclear & particles physics, Star formation, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Galaxy, Universe, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA)
Abstract

The relationships between stellar mass, gas-phase metallicity and star formation rate (i.e. the Mass-Metallicity, MZR, and the Fundamental Metallcity Relation, FMR) in the local Universe are revisited by fully anchoring the metallicity determination for SDSS galaxies on the Te abundance scale defined exploiting the strong-line metallicity calibrations presented in Curti et al. (2017). Self-consistent metallicity measurements allow a more unbiased assessment of the scaling relations involving M, Z and SFR, which provide powerful constraints for the chemical evolution models. We parametrise the MZR with a new functional form which allows us to better characterise the turnover mass. The slope and saturation metallicity are in good agreement with previous determinations of the MZR based on the Te method, while showing significantly lower normalisation compared to those based on photoionisation models. The Z- SFR dependence at fixed stellar mass is also investigated, being particularly evident for highly star forming galaxies, where the scatter in metallicity is reduced up to a factor of ~30%. A new parametrisation of the FMR is given by explicitly introducing the SFR-dependence of the turnover mass into the MZR. The residual scatter in metallicity for the global galaxy population around the new FMR is 0.054 dex. The new FMR presented in this work represents a useful local benchmark to compare theoretical predictions and observational studies (of both local and high-redshift galaxies) whose metallicity measurements are tied to the abundance scale defined by the Te method, hence allowing to properly assess its evolution with cosmic time., Comment: 21 pages, 13 figures. Accepted for publication on MNRAS. V2: Equation (3) corrected

Published
2020

24. Fundamental metallicity relation in CALIFA, SDSS-IV MaNGA, and high-z galaxies

Author

Filippo Mannucci, Giovanni Cresci, Mirko Curti, ITA, and GBR

Subjects
Physics, Active galactic nucleus, Relation (database), Stellar mass, 010308 nuclear & particles physics, Star formation, Metallicity, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Astrophysics - Astrophysics of Galaxies, Galaxy, Space and Planetary Science, Consistency (statistics), Astrophysics of Galaxies (astro-ph.GA), 0103 physical sciences, Galaxy formation and evolution, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

The metallicity of local galaxies is tightly related not only to stellar mass, i.e. the mass-metallicity relation, but also to the star formation rate (SFR) through the so-called fundamental metallicity relation (FMR); more active galaxies show lower metallicities at fixed mass. Interestingly, high-z galaxies up to z~2.5 follow the same relation defined by SDSS locally. However, different shapes have been proposed for local galaxies, and the existence of a FMR and the role of the SFR has been recently questioned by some authors. In this paper we first discuss the various parametrizations of this mass-metallicity-SFR relation that has appeared in the literature to understand the origin of their different shapes. We then reanalysed data from CALIFA and SDSS-IV MaNGA surveys, which were used to suggest no dependency of metallicity on the SFR in local galaxies. Contrary to those claims, we find that those datasets are instead fully consistent with the predictions, showing the expected dependency on the SFR at fixed mass. Finally, we analysed those high-z data whose consistency with the local relation was questioned. While an internal dependency on the SFR among the subsamples is difficult to detect at high-z because of the limited dynamic range sampled in the three parameters and the intrinsic scatter and uncertainties of such small samples, all these datasets are compatible with the relation defined locally by SDSS galaxies. This confirms the lack of evolution of the FMR in these data up to z~2.3., Comment: 11 pages, 8 figures, accepted in A&A, final version

Published
2019

25. LBT/ARGOS adaptive optics observations of z$\sim 2$ lensed galaxies

Author

Mirko Curti, Sirio Belli, Gustavo Rahmer, Iskren Y. Georgiev, Giovanni Cresci, Tommaso Mazzoni, Wolfgang Gaessler, L. Busoni, Martin Kulas, J. Ziegleder, M. Bonaglia, D. Peter, J. Borelli, Simone Esposito, M. Deysenroth, Michele Perna, Sebastian Rabien, Walfried Raab, G. Orban de Xivry, Dieter Lutz, Claudio Grillo, Hans Gemperlein, Matthias Rosensteiner, A. Contursi, F. Mannucci, Peter Buschkamp, Stefano Zibetti, ITA, and DEU

Subjects
Physics, 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Astrophysics - Astrophysics of Galaxies, Galaxy, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), 0103 physical sciences, Adaptive optics, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

Gravitationally lensed systems allow a detailed view of galaxies at high redshift. High spatial- and spectral-resolution measurements of arc-like structures can offer unique constraints on the physical and dynamical properties of high-z systems. We present near-infrared spectra centred on the gravitational arcs of six known z ~ 2 lensed star-forming galaxies of stellar masses of 10^9-10^11 Msun and star formation rate (SFR) in the range between 10 and 400 Msun/yr. Ground layer adaptive optics (AO)-assisted observations are obtained at the Large Binocular Telescope (LBT) with the LUCI spectrographs during the commissioning of the ARGOS facility. We used MOS masks with curved slits to follow the extended arched structures and study the diagnostic emission lines. Combining spatially resolved kinematic properties across the arc-like morphologies, emission line diagnostics and archival information, we distinguish between merging and rotationally supported systems, and reveal the possible presence of ejected gas. For galaxies that have evidence for outflows, we derive outflow energetics and mass-loading factors compatible with those observed for stellar winds in local and high-z galaxies. We also use flux ratio diagnostics to derive gas-phase metallicities. The low signal-to-noise ratio in the faint H$\beta$ and nitrogen lines allows us to derive an upper limit of ~ 0.15 dex for the spatial variations in metallicity along the slit for the lensed galaxy J1038. Analysed near-infrared spectra presented here represent the first scientific demonstration of performing AO-assisted multi-object spectroscopy with narrow curved-shape slits. The increased angular and spectral resolution, combined with the binocular operation mode with the 8.4-m-wide eyes of LBT, will allow the characterisation of kinematic and chemical properties of a large sample of galaxies at high-z in the near future., Comment: 18 pages, 13 figures, accepted for publication in A&A

Published
2018

26. Metallicity gradients in high-z galaxies: insights from the KLEVER Survey

Author

Mirko Curti

Subjects
Physics, Space and Planetary Science, Metallicity, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Astrophysics::Galaxy Astrophysics, Galaxy
Abstract

We present reconstructed source plane metallicity maps for a sample of ~30 gravitationally lensed galaxies between 1.2 < z < 2.5, observed in the framework of the KLEVER Survey. Oxygen abundance is derived exploiting a variety of different emission line diagnostics, as provided by the full coverage of the near-infrared bands. The majority of galaxies in our sample present flat radial metallicity gradients, in agreement with galaxy evolution models predicting strong feedback mechanisms in place at these epochs. However, complex patterns as seen in some of our metallicity maps warn against the use of azimuthally-averaged radial gradients as the only observable to constrain chemical evolution models.

Published
2018

27. New fully empirical calibrations of strong-line metallicity indicators in star forming galaxies

Author

Giovanni Cresci, Roberto Maiolino, Mirko Curti, Alessandro Marconi, Simone Esposito, F. Mannucci, Curti, Mirko [0000-0002-2678-2560], Maiolino, Roberto [0000-0002-4985-3819], Apollo - University of Cambridge Repository, ITA, and GBR

Subjects
Higher education, Metallicity, Library science, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, ISM: abundances, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Web site, Physics, 010308 nuclear & particles physics, business.industry, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Galaxy, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), galaxies: abundances, business, galaxies: evolution, galaxies: ISM
Abstract

We derive new empirical calibrations for strong-line diagnostics of gas phase metallicity in local star forming galaxies by uniformly applying the Te method over the full metallicity range probed by the Sloan Digital Sky Survey (SDSS). To measure electron temperatures at high metallicity, where the auroral lines needed are not detected in single galaxies, we stacked spectra of more than 110,000 galaxies from the SDSS in bins of log[O II]/H$\beta$ and log[O III]/H$\beta$. This stacking scheme does not assume any dependence of metallicity on mass or star formation rate, but only that galaxies with the same line ratios have the same oxygen abundance. We provide calibrations which span more than 1 dex in metallicity and are entirely defined on a consistent absolute Te metallicity scale for galaxies. We apply our calibrations to the SDSS sample and find that they provide consistent metallicity estimates to within 0.05 dex., Comment: 18 pages, 11 figures, MNRAS accepted

Published
2016

Catalog

Books, media, physical & digital resources
See catalog results