GOODS-Herschel: the impact of galaxy-galaxy interactions on the far-infrared properties of galaxies
| Autor: | Paola Popesso, Emanuele Daddi, Jeyhan S. Kartaltepe, Mark Dickinson, Roger Leiton, Ho Seong Hwang, Georgios E. Magdis, Herve Aussel, Kalliopi Dasyra, David Elbaz, Helmut Dannerbauer, Bruno Altieri, Ivan Valtchanov, D. Coia, V. Buat, Vassilis Charmandaris, Benjamin Magnelli, D. Le Borgne |
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| Přispěvatelé: | 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), 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) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Physics
Cosmology and Nongalactic Astrophysics (astro-ph.CO) [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] 010308 nuclear & particles physics FOS: Physical sciences Astronomy and Astrophysics Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences Billion years Galaxy Redshift Far infrared Space and Planetary Science 0103 physical sciences 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Astronomy and Astrophysics-A&A Astronomy and Astrophysics-A&A, EDP Sciences, 2011, 535, ⟨10.1051/0004-6361/201117476⟩ Astronomy and Astrophysics-A&A, 2011, 535, ⟨10.1051/0004-6361/201117476⟩ |
| ISSN: | 0004-6361 |
| DOI: | 10.1051/0004-6361/201117476 |
| Popis: | We study the impact of galaxy-galaxy interactions on the FIR properties of galaxies and its evolution at 099%. However, the SFR and the SSFR decrease or do not change much as it approaches an early-type neighbor. The bifurcations of SFRs and SSFRs depending on the neighbor's morphology seem to occur at R_n~0.5r_vir,nei, which is supported by K-S and MC tests with a significance level of >98%. For all redshift bins, the SSFRs of late-type galaxies interacting with late-type neighbors are increased by factors of about 1.8+/-0.7 and 4.0+/-1.2 compared to those of non-interacting galaxies when the pair separation is smaller than 0.5r_vir,nei and 0.1r_vir,nei, respectively. The Tdust of both local and high-z late-type galaxies strongly interacting with late-type neighbors (i.e. R_n < 0.1r_vir,nei) appears to be higher than that of non-interacting galaxies with a significance level of 96-99%. However, Tdust of local late-type galaxies strongly interacting with early-type neighbors seems to be lower than or similar to that of non-interacting galaxies. Our results suggest that galaxy-galaxy interactions and mergers have been strongly affecting the SFR and the dust properties of star-forming galaxies over at least 8 billion years. Comment: 10 pages, 6 figures. To appear in A&A |
| Databáze: | OpenAIRE |
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