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8 results on '"Tak, F van der"'

1. Tracing Evolution in Massive Protostellar Objects – I. Fragmentation and emission properties of massive star-forming clumps in a luminosity-limited ALMA sample.

Author

Avison, A, Fuller, G A, Frimpong, N Asabre, Etoka, S, Hoare, M, Jones, B M, Peretto, N, Traficante, A, Tak, F van der, Pineda, J E, Beltrán, M, Wyrowski, F, Thompson, M, Lumsden, S, Nagy, Z, Hill, T, Viti, S, Fontani, F, and Schilke, P

Subjects
ACTINIC flux, INTERSTELLAR medium, SPECTRAL lines, CHEMICAL energy, STAR formation
Abstract

The role of massive (≥ 8 |$\, {\rm M}_{\odot }$|⁠) stars in defining the energy budget and chemical enrichment of the interstellar medium in their host galaxy is significant. In this first paper from the Tracing Evolution in Massive Protostellar Objects (TEMPO) project we introduce a colour-luminosity selected (L* ∼ 3 × 103 to 1 × 105 L⊙) sample of 38 massive star-forming regions observed with ALMA at 1.3 mm and explore the fragmentation, clustering, and flux density properties of the sample. The TEMPO sample fields are each found to contain multiple fragments (between 2 and 15 per field). The flux density budget is split evenly (53 per cent–47 per cent) between fields where emission is dominated by a single high flux density fragment and those in which the combined flux density of fainter objects dominates. The fragmentation scales observed in most fields are not comparable with the thermal Jeans length, λ J , being larger in the majority of cases, suggestive of some non-thermal mechanism. A tentative evolutionary trend is seen between luminosity of the clump and the 'spectral line richness' of the TEMPO fields; with 6.7 GHz maser associated fields found to be lower luminosity and more line rich. This work also describes a method of line-free continuum channel selection within ALMA data and a generalized approach used to distinguishing sources which are potentially star-forming from those which are not, utilizing interferometric visibility properties. [ABSTRACT FROM AUTHOR]

Published
2023
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2. The carbon footprint of NL astronomy in 2019

Author

Tak, F. Van der, Nelemans, G., Bloemen, S., Burtscher, L., Portegies Zwart, S., Wijnands, R., Janssen, A., Schoenmakers, A., and Astronomy

Subjects
Astronomy, Astrophysics::High Energy Astrophysical Phenomena, Computer Science::Neural and Evolutionary Computation, Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Physics::Geophysics
Abstract

Item does not contain fulltext Talk presented at the 2021 EAS in Session 30: Astronomy for Planet Earth. Talk presented at the 2021 EAS in Session 30: Astronomy for Planet Earth, 01 juli 2021

Published
2021

3. The carbon footprint of astronomy research in the Netherlands

Author

Tak, F. Van der, Burtscher, L., Zwart, S.P., Tabone, B., Nelemans, G., Bloemen, S., Young, A., Wijnands, R., Janssen, A., Schoenmakers, A., Tak, F. Van der, Burtscher, L., Zwart, S.P., Tabone, B., Nelemans, G., Bloemen, S., Young, A., Wijnands, R., Janssen, A., and Schoenmakers, A.

Abstract

Contains fulltext : 241537.pdf (Publisher’s version ) (Closed access)

Published
2021

4. Bringing high spatial resolution to the far-infrared: A giant leap for astrophysics

Author

Projekt DEAL, German Centre for Air and Space Travel, European Commission, German Research Foundation, Agencia Estatal de Investigación (España), Linz, Hendrik, Beuther, Henrik, Gerin, Maryvonne, Goicoechea, Javier R., Helmich, Frank, Krause, Oliver, Liu, Yao, Molinari, Sergio, Ossenkopf-Okada, V., Pineda, Jorge, Sauvage, Marc, Schinnerer, Eva, Tak, F. van der, Wiedner, Martina, Amiaux, Jerome, Bhatia, Divya, Buinhas, Luisa, Durand, Gilles, Förstner, Roger, Graf, Urs, Lezius, Matthias, Projekt DEAL, German Centre for Air and Space Travel, European Commission, German Research Foundation, Agencia Estatal de Investigación (España), Linz, Hendrik, Beuther, Henrik, Gerin, Maryvonne, Goicoechea, Javier R., Helmich, Frank, Krause, Oliver, Liu, Yao, Molinari, Sergio, Ossenkopf-Okada, V., Pineda, Jorge, Sauvage, Marc, Schinnerer, Eva, Tak, F. van der, Wiedner, Martina, Amiaux, Jerome, Bhatia, Divya, Buinhas, Luisa, Durand, Gilles, Förstner, Roger, Graf, Urs, and Lezius, Matthias

Abstract

The far-infrared (FIR) regime is one of the wavelength ranges where no astronomical data with sub-arcsecond spatial resolution exist. None of the medium-term satellite projects like SPICA, Millimetron, or the Origins Space Telescope will resolve this malady. For many research areas, however, information at high spatial and spectral resolution in the FIR, taken from atomic fine-structure lines, from highly excited carbon monoxide (CO), light hydrides, and especially from water lines would open the door for transformative science. A main theme will be to trace the role of water in proto-planetary discs, to observationally advance our understanding of the planet formation process and, intimately related to that, the pathways to habitable planets and the emergence of life. Furthermore, key observations will zoom into the physics and chemistry of the star-formation process in our own Galaxy, as well as in external galaxies. The FIR provides unique tools to investigate in particular the energetics of heating, cooling, and shocks. The velocity-resolved data in these tracers will reveal the detailed dynamics engrained in these processes in a spatially resolved fashion, and will deliver the perfect synergy with ground-based molecular line data for the colder dense gas.

Published
2021

5. Accelerating infall and rotational spin-up in the hot molecular core G31.41+0.31

Author

Beltran, M.T., Cesaroni, R., Rivilla, V.M., Sanchez-Monge, A., Moscadelli, L., Ahmadi, A., Goddi, C., Kuiper, R.A., Peters, T., Tak, F. van der, Walmsley, C.M., Beltran, M.T., Cesaroni, R., Rivilla, V.M., Sanchez-Monge, A., Moscadelli, L., Ahmadi, A., Goddi, C., Kuiper, R.A., Peters, T., Tak, F. van der, and Walmsley, C.M.

Abstract

Contains fulltext : 193975.pdf (preprint version ) (Open Access)

Published
2018

6. The feedback of an HC H-II region on its parental molecular core The case of core A1 in the star-forming region G24.78+0.08

Author

Moscadelli, L., Rivilla, V.M., Cesaroni, R., Beltran, M.T., Goddi, C., Sanchez-Monge, A., Schilke, P., Peters, T.A., Tak, F. Van der, Vig, S., Moscadelli, L., Rivilla, V.M., Cesaroni, R., Beltran, M.T., Goddi, C., Sanchez-Monge, A., Schilke, P., Peters, T.A., Tak, F. Van der, and Vig, S.

Abstract

Contains fulltext : 194845.pdf (publisher's version ) (Open Access)

Published
2018

7. Chasing discs around O-type (proto)stars: Evidence from ALMA observations

Author

Cesaroni, R., Sánchez-Monge, Á., Beltrán, M.T., Johnston, K.G., Maud, L.T., Moscadelli, L., Mottram, J.C., Ahmadi, A., Allen, V., Beuther, H., Csengeri, T., Etoka, S., Fuller, G.A., Galli, D., Galván-Madrid, R., Goddi, C., Henning, T., Hoare, M.G., Klaassen, P.D., Kuiper, R., Kumar, M.S.N., Lumsden, S., Peters, T., Rivilla, V.M., Schilke, P., Testi, L., Tak, F. van der, Vig, S., Walmsley, C.M., Zinnecker, H., Cesaroni, R., Sánchez-Monge, Á., Beltrán, M.T., Johnston, K.G., Maud, L.T., Moscadelli, L., Mottram, J.C., Ahmadi, A., Allen, V., Beuther, H., Csengeri, T., Etoka, S., Fuller, G.A., Galli, D., Galván-Madrid, R., Goddi, C., Henning, T., Hoare, M.G., Klaassen, P.D., Kuiper, R., Kumar, M.S.N., Lumsden, S., Peters, T., Rivilla, V.M., Schilke, P., Testi, L., Tak, F. van der, Vig, S., Walmsley, C.M., and Zinnecker, H.

Abstract

Contains fulltext : 176371.pdf (Publisher’s version ) (Open Access)

Published
2017

8. Feedback and feeding in the context of galaxy evolution with SPICA: Direct characterisation of molecular outflows and inflows

Author

National Aeronautics and Space Administration (US), European Commission, Ministerio de Economía y Competitividad (España), González-Alfonso, E., Armus, Lee, Carrera, Francisco J., Charmandaris, V., Efstathiou, A., Egami, E., Fernández-Ontiveros, Juan Antonio, Fischer, Ingo, Granato, G. L., Gruppioni, C., Hatziminaoglou, Evanthia, Imanishi, Masatoshi, Isobe, N., Kaneda, Hidehiro, Koziel-Wierzbowska, D., Malkan, M.A., Martín-Pintado, Jesús, Mateos, Silvia, Matsuhara, H., Miniutti, Giovanni, Nakagawa, T., Pozzi, F., Rico-Villas, Fernando, Rodighiero, G., Roelfsema, P., Spinoglio, Luigi, Spoon, H. W. W., Sturm, E., Tak, F. van der, Vignali, Cristian, Wang, Lingyu, National Aeronautics and Space Administration (US), European Commission, Ministerio de Economía y Competitividad (España), González-Alfonso, E., Armus, Lee, Carrera, Francisco J., Charmandaris, V., Efstathiou, A., Egami, E., Fernández-Ontiveros, Juan Antonio, Fischer, Ingo, Granato, G. L., Gruppioni, C., Hatziminaoglou, Evanthia, Imanishi, Masatoshi, Isobe, N., Kaneda, Hidehiro, Koziel-Wierzbowska, D., Malkan, M.A., Martín-Pintado, Jesús, Mateos, Silvia, Matsuhara, H., Miniutti, Giovanni, Nakagawa, T., Pozzi, F., Rico-Villas, Fernando, Rodighiero, G., Roelfsema, P., Spinoglio, Luigi, Spoon, H. W. W., Sturm, E., Tak, F. van der, Vignali, Cristian, and Wang, Lingyu

Abstract

A far-infrared observatory such as the SPace Infrared telescope for Cosmology and Astrophysics, with its unprecedented spectroscopic sensitivity, would unveil the role of feedback in galaxy evolution during the last 10 Gyr of the Universe (z = 1.5-2), through the use of far- and mid-infrared molecular and ionic fine structure lines that trace outflowing and infalling gas. Outflowing gas is identified in the far-infrared through P-Cygni line shapes and absorption blueshifted wings in molecular lines with high dipolar moments, and through emission line wings of fine-structure lines of ionised gas. We quantify the detectability of galaxy-scale massive molecular and ionised outflows as a function of redshift in AGN-dominated, starburst-dominated, and main-sequence galaxies, explore the detectability of metal-rich inflows in the local Universe, and describe the most significant synergies with other current and future observatories that will measure feedback in galaxies via complementary tracers at other wavelengths.

Published
2017

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