9 results on '"Hutchings, J"'
Search Results
2. A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE)
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Boselli, A., Fossati, M., Longobardi, A., Kianfar, K., Dametto, N.Z., Amram, P., Anderson, J. P., Andreani, P., Boissier, S., Boquien, Médéric, Buat, Véronique, Consolandi, G., Cortese, L., Côté, P., Cuillandre, J.C., Ferrarese, L., Galbany, Lluís, Gavazzi, G., Gwyn, Stephen, Hensler, G., Hutchings, J., Peng, E. W., Postma, J. F., Roediger, J., Roehlly, Y., Serra, P., Trinchieri, G., Centre National D'Etudes Spatiales (France), National Aeronautics and Space Administration (US), Indian Institue of Astrophysics, Canadian Space Agency, Korea Astronomy and Space Science Institute, National Institutes of Natural Sciences (Japan), Ministerio de Ciencia e Innovación (España), Australian Research Council, and European Commission
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Galaxies: elliptical and lenticular ,clusters: individual: Virgo [Galaxies] ,Galaxies: evolution ,interactions [Galaxies] ,clusters: general [Galaxies] ,Galaxies: clusters: individual: Virgo ,evolution [Galaxies] ,Galaxies: interactions ,cD ,elliptical and lenticular [Galaxies] ,Galaxies: ISM ,ISM [Galaxies] ,Galaxies: clusters: general - Abstract
As part of the Virgo Cluster Survey Tracing Ionised Gas Emission, a blind narrow-band H+[NII] imaging survey of the Virgo cluster carried out with MegaCam at the CFHT, we discovered eight massive (1010 . Mstar . 1011 M) lenticular galaxies with prominent ionised gas emission features in their inner (a few kiloparsec) regions. These features are either ionised gas filaments similar to those observed in cooling flows (two galaxies), or they are thin discs with sizes 0:7 . R(H) . 2:0 kpc (six galaxies), thus significantly smaller than those of the stellar disc (R(H) ' 7 22%Riso(r)). The morphological properties of these discs are similar to those of the dust seen in absorption in high-resolution HST images. Using a unique set of multifrequency data, including new or archival ASTROSAT/UVIT, GALEX, HST, CFHT, Spitzer, and Herschel imaging data, combined with IFU (MUSE, ALMA) and long-slit (SOAR) spectroscopy, we show that while the gas that is located within these inner discs is photoionised by young stars, which signals ongoing star formation, the gas in the filamentary structures is shock ionised. The star formation surface brightness of these discs is similar to that observed in late-type galaxies. Because of their reduced size, however, these lenticular galaxies are located below the main sequence of unperturbed or cluster star-forming systems. By comparing the dust masses measured from absorption maps in optical images, from the Balmer decrement, or estimated by fitting the UV-to-far-IR spectral energy distribution of the target galaxies, we confirm that the dust masses derived from optical attenuation maps are heavily underestimated because of geometrical eects due to the relative distribution of the absorbing dust and the emitting stars. We also show that these galaxies have gas-to-dust ratios of G=D ' 80320 30 , and that the star formation within these discs follows the Schmidt relation, but with an eciency that is reduced by a factor of 2.5. Using our unique set of multifrequency data, we discuss the possible origin of the ionised gas in these objects, which suggests multiple and complex formation scenarios for massive lenticular galaxies in clusters., We acknowledge financial support from “Programme National de Cosmologie and Galaxies” (PNCG) funded by CNRS/INSU-IN2P3-INP, CEA and CNES, France, and from “Projet International de Coopération Scientifique” (PICS) with Canada funded by the CNRS, France. This research has made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration and of the GOLDMine database (http://goldmine.mib.infn.it/) (Gavazzi et al. 2003). The UVIT project is collaboration between the following institutes from India: Indian Institute of Astrophysics (IIA), Bengaluru, Inter University Centre for Astronomy and Astrophysics (IUCAA), Pune, and National Centre for Radioastrophysics (NCRA) (TIFR), Pune, and the Canadian Space Agency (CSA). This paper makes use of the following ALMA data: ADS/JAO.ALMA 2013.1.00493.S. ALMA is a partnership of ESO (representing its member states), NSF (USA) and NINS (Japan), together with NRC (Canada), MOST and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO and NAOJ. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. M.F. has received funding from the European Research Council (ERC) (grant agreement No 757535). N.Z.D. acknowledges partial support from FONDECYT through project 3190769. L.G. acknowledges financial support from the Spanish Ministry of Science and Innovation (MCIN) under the 2019 Ramón y Cajal program RYC2019-027683 and from the Spanish MCIN project HOSTFLOWS PID2020-115253GA-I00. M.B. gratefully acknowledges support by the ANID BASAL project FB210003 and the FONDECYT regular grant 1211000. L.C. acknowledges support from the Australian Research Council Discovery Project and Future Fellowship funding schemes (DP210100337, FT180100066). Parts of this research were conducted by the Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), through project number CE170100013.
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- 2022
3. A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE)
- Author
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Boselli, A., primary, Lupi, A., additional, Epinat, B., additional, Amram, P., additional, Fossati, M., additional, Anderson, J. P., additional, Boissier, S., additional, Boquien, M., additional, Consolandi, G., additional, Côté, P., additional, Cuillandre, J. C., additional, Ferrarese, L., additional, Galbany, L., additional, Gavazzi, G., additional, Gómez-López, J. A., additional, Gwyn, S., additional, Hensler, G., additional, Hutchings, J., additional, Kuncarayakti, H., additional, Longobardi, A., additional, Peng, E. W., additional, Plana, H., additional, Postma, J., additional, Roediger, J., additional, Roehlly, Y., additional, Schimd, C., additional, Trinchieri, G., additional, and Vollmer, B., additional
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- 2021
- Full Text
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4. Dissecting star formation in the “Atoms-for-Peace” galaxy
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George, K., primary, Joseph, P, additional, Côté, P., additional, Ghosh, S. K., additional, Hutchings, J. B., additional, Mohan, R., additional, Postma, J., additional, Sankarasubramanian, K., additional, Sreekumar, P., additional, Stalin, C. S., additional, Subramaniam, A., additional, and Tandon, S. N., additional
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- 2018
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5. UVIT observations of the star-forming ring in NGC 7252: Evidence of possible AGN feedback suppressing central star formation
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George, K., primary, Joseph, P., additional, Mondal, C., additional, Devaraj, A., additional, Subramaniam, A., additional, Stalin, C. S., additional, Côté, P., additional, Ghosh, S. K., additional, Hutchings, J. B., additional, Mohan, R., additional, Postma, J., additional, Sankarasubramanian, K., additional, Sreekumar, P., additional, and Tandon, S.N., additional
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- 2018
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6. UVIT observations of the star-forming ring in NGC7252: Evidence of possible AGN feedback suppressing central star formation.
- Author
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George, K., Joseph, P., Mondal, C., Devaraj, A., Subramaniam, A., Stalin, C. S., Côté, P., Ghosh, S. K., Hutchings, J. B., Mohan, R., Postma, J., Sankarasubramanian, K., Sreekumar, P., and Tandon, S.N.
- Subjects
ULTRAVIOLET telescopes ,STAR formation ,STAR observations ,ACTIVE galactic nuclei ,STARBURSTS - Abstract
Context. Some post-merger galaxies are known to undergo a starburst phase that quickly depletes the gas reservoir and turns it into a red-sequence galaxy, though the details are still unclear. Aims. Here we explore the pattern of recent star formation in the central region of the post-merger galaxy NGC7252 using highresolution ultraviolet (UV) images from the UVIT on ASTROSAT. Methods. The UVIT images with 1.2 and 1.4 arcsec resolution in the FUV and NUV are used to construct a FUV-NUV colour map of the central region. Results. The FUV-NUV pixel colour map for this canonical post-merger galaxy reveals a blue circumnuclear ring of diameter ~1000 (3.2 kpc) with bluer patches located over the ring. Based on a comparison to single stellar population models, we show that the ring is comprised of stellar populations with ages ≲300 Myr, with embedded star-forming clumps of younger age (≲150Myr). Conclusions. The suppressed star formation in the central region, along with the recent finding of a large amount of ionised gas, leads us to speculate that this ring may be connected to past feedback from a central super-massive black hole that has ionised the hydrogen gas in the central ~400 ~1:3 kpc. [ABSTRACT FROM AUTHOR]
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- 2018
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7. Multiwavelength studies of the Seyfert 1 galaxy NGC 7469 I. Far UV observations with FUSE
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Kriss, G. A., primary, Blustin, A., additional, Branduardi-Raymont, G., additional, Green, R. F., additional, Hutchings, J., additional, and Kaiser, M. E., additional
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- 2003
- Full Text
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8. A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE)
- Author
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A. Boselli, M. Fossati, A. Longobardi, K. Kianfar, N. Z. Dametto, P. Amram, J. P. Anderson, P. Andreani, S. Boissier, M. Boquien, V. Buat, G. Consolandi, L. Cortese, P. Côté, J. C. Cuillandre, L. Ferrarese, L. Galbany, G. Gavazzi, S. Gwyn, G. Hensler, J. Hutchings, E. W. Peng, J. Postma, J. Roediger, Y. Roehlly, P. Serra, G. Trinchieri, Boselli, A, Fossati, M, Longobardi, A, Kianfar, K, Dametto, N, Amram, P, Anderson, J, Andreani, P, Boissier, S, Boquien, M, Buat, V, Consolandi, G, Cortese, L, Cote, P, Cuillandre, J, Ferrarese, L, Galbany, L, Gavazzi, G, Gwyn, S, Hensler, G, Hutchings, J, Peng, E, Postma, J, Roediger, J, Roehlly, Y, Serra, P, Trinchieri, G, Laboratoire d'Astrophysique de Marseille (LAM), 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), Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB), Dipartimento di Fisica e Astronomia 'Galileo Galilei', Università degli Studi di Padova = University of Padua (Unipd), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), National Research Council of Canada (NRC), University of Vienna [Vienna], Forschungszentrum Jülich GmbH | Centre de recherche de Juliers, Helmholtz-Gemeinschaft = Helmholtz Association, NRC Herzberg Astronomy and Astrophysics, Conseil National de Recherches Canada (CNRC), INAF - Osservatorio Astronomico di Cagliari (OAC), Istituto Nazionale di Astrofisica (INAF), and INAF - Osservatorio Astronomico di Brera (OAB)
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Physics ,[SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] ,galaxies: elliptical and lenticular CD ,FOS: Physical sciences ,Galaxies: evolution ,Astronomy and Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,Tracing ,Galaxies: clusters: individual: Virgo ,Astrophysics - Astrophysics of Galaxies ,Galaxies: elliptical and lenticular, cD ,Galaxies: ISM ,Space and Planetary Science ,Galaxies: interaction ,Astrophysics of Galaxies (astro-ph.GA) ,galaxies: interactions ,Astrophysics::Solar and Stellar Astrophysics ,Astrophysics::Earth and Planetary Astrophysics ,Galaxies: clusters: general ,Lenticular galaxy ,Astrophysics::Galaxy Astrophysics - Abstract
As part of the VESTIGE survey, a blind narrow-band Ha+[NII] imaging survey of the Virgo cluster carried out with MegaCam at the CFHT, we discovered 8 massive lenticular galaxies with prominent ionised gas emission features in their inner (few kpc) regions. These features are either ionised gas filaments similar to those observed in cooling flows (2 gal), or thin discs with sizes 0.7, Comment: Accepted for publication on A&A
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- 2022
9. A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE)
- Author
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Stephen Gwyn, Médéric Boquien, G. Consolandi, Ginevra Trinchieri, Eric W. Peng, Laura Ferrarese, Bernd Vollmer, Samuel Boissier, Lluís Galbany, Joel Roediger, J. A. Gómez-López, A. Longobardi, Yannick Roehlly, Matteo Fossati, P. Amram, Alessandro Boselli, P. Côté, Jean-Charles Cuillandre, Alessandro Lupi, Giuseppe Gavazzi, Hanindyo Kuncarayakti, Benoît Epinat, Joseph E. Postma, C. Schimd, Joseph P. Anderson, Gerhard Hensler, Henri Plana, J. B. Hutchings, 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), Universita Vita Salute San Raffaele = Vita-Salute San Raffaele University [Milan, Italie] (UniSR), Istituti di Ricovero e Cura a Carattere Scientifico (IRCCS), Max-Planck-Institut für Extraterrestrische Physik (MPE), Università degli Studi di Milano-Bicocca [Milano] (UNIMIB), NRC Herzberg Astronomy and Astrophysics, Conseil National de Recherches Canada (CNRC), University of Vienna [Vienna], Laboratorio de Astrofísica Teórica e Observacional, Universidade Estadual De Santa Cruz [Brazil] (UESC), Observatoire astronomique de Strasbourg (ObAS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), 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), Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB), Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Boselli, A, Lupi, A, Epinat, B, Amram, P, Fossati, M, Anderson, J, Boissier, S, Boquien, M, Consolandi, G, Cote, P, Cuillandre, J, Ferrarese, L, Galbany, L, Gavazzi, G, Gomez-Lopez, J, Gwyn, S, Hensler, G, Hutchings, J, Kuncarayakti, H, Longobardi, A, Peng, E, Plana, H, Postma, J, Roediger, J, Roehlly, Y, Schimd, C, Trinchieri, G, and Vollmer, B
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Evolution – galaxies ,General – galaxies ,FOS: Physical sciences ,Individual ,Context (language use) ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,01 natural sciences ,Clusters ,0103 physical sciences ,galaxies: interactions ,Astrophysics::Solar and Stellar Astrophysics ,Spectral resolution ,010303 astronomy & astrophysics ,ISM ,Astrophysics::Galaxy Astrophysics ,Dwarf galaxy ,Physics ,[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] ,010308 nuclear & particles physics ,Star formation ,Astronomy and Astrophysics ,Galaxies ,Astrophysics - Astrophysics of Galaxies ,Virgo Cluster ,Galaxy ,Ram pressure ,Galaxies: interaction ,galaxies: clusters: general ,Space and Planetary Science ,Astrophysics of Galaxies (astro-ph.GA) ,Interactions – galaxies ,galaxies: clusters: individual: Virgo ,Spectral energy distribution ,Astrophysics::Earth and Planetary Astrophysics ,galaxies: evolution ,[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] ,galaxies: ISM ,Virgo – galaxies - Abstract
We study the IB(s)m galaxy IC 3476 observed in the context of the Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE), a blind narrow-band H +[NII] imaging survey of the Virgo cluster carried out with MegaCam at the CFHT. The deep narrowband image reveals a very pertubed ionised gas distribution that is characterised by a prominent banana-shaped structure in the front of the galaxy formed of giant HII regions crossing the stellar disc. Star-forming structures, at 8 kpc from the edges of the stellar disc, are also detected in a deep far-ultraviolet ASTROSAT/UVIT image. This particular morphology indicates that the galaxy is undergoing an almost edge-on ram pressure stripping event. The same H +[NII] image also shows that the star formation activity is totally quenched in the leading edge of the disc, where the gas has been removed during the interaction with the surrounding medium. The spectral energy distribution fitting analysis of the multi-frequency data indicates that this quenching episode is very recent ( 50 Myr), and roughly corresponds to an increase of the star formation activity by a factor of 161% in the inner regions with respect to that expected for secular evolution. The analysis of these data, whose angular resolution enables the study of the induced e ects of the perturbation down to the scale of individual HII regions (req ' 40 pc), also suggests that the increase of star formation activity is due to the compression of the gas along the stellar disc of the galaxy, which is able to increase its mean electron density and boost the star formation process producing bright HII regions with luminosities up to L(H ) ' 1038 erg s-1. The combined analysis of the VESTIGE data with deep IFU spectroscopy gathered with MUSE and with high spectral resolution Fabry Perot data also indicates that the hydrodynamic interaction has deeply perturbed the velocity field of the ionised gas component while leaving that of the stellar disc una ected. The comparison of the data with tuned high-resolution hydrodynamic simulations accounting for the di erent gas phases (atomic, molecular, ionised) consistently indicates that the perturbing event is very recent (50–150 Myr), once again confirming that ram pressure stripping is a violent phenomenon that is able to perturb the evolution of galaxies in rich environments on short timescales., "Programme National de Cosmologie and Galaxies" (PNCG) - CNRS/INSU-IN2P3-INP, Centre National D'etudes Spatiales, French Atomic Energy Commission, National Aeronautics & Space Administration (NASA), BEIS capital funding via STFC ST/K00042X/1 ST/P002293/1 ST/R002371/1 ST/S002502/1, Durham University, UK Research & Innovation (UKRI) Science & Technology Facilities Council (STFC) ST/R000832/1, European Research Council (ERC) European Commission 740120, Comisión Nacional de Investigación Científica y Tecnológica (CONICYT) CONICYT FONDECYT 1170618, European Commission 839090, Spanish grant within the European Funds for Regional Development (FEDER) PGC2018-095317-B-C21, Academy of Finland European Commission 324504 328898, Fundacao de Amparo a Pesquisa do Estado da Bahia (FAPESB) PIE 0013/2016
- Published
- 2021
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