Effect of the environment on star formation activity and stellar mass for star-forming galaxies in the COSMOS field

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dc.contributor.authorHess, K
dc.contributor.authorVaccari, M
dc.contributor.authorRandriamampandry, S
dc.date.accessioned2021-04-20T15:09:45Z
dc.date.available2021-04-20T15:09:45Z
dc.date.issued2020-11
dc.description.abstractWe investigate the relationship between the environment and the galaxy main sequence (the relationship between stellar mass and star formation rate), as well as the relationship between the environment and radio luminosity (P1.4 GHz), to shed new light on the effects of the environment on galaxies. We use the VLA-COSMOS 3-GHz catalogue, which consists of star-forming galaxies and quiescent galaxies (active galactic nuclei) in three different environments (field, filament, cluster) and for three different galaxy types (satellite, central, isolated). We perform for the first time a comparative analysis of the distribution of star-forming galaxies with respect to the main-sequence consensus region from the literature, taking into account galaxy environment and using radio observations at 0.1 ≤ z ≤ 1.2. Our results corroborate that the star formation rate is declining with cosmic time, which is consistent with the literature. We find that the slope of the main sequence for different z and M∗ bins is shallower than the main-sequence consensus, with a gradual evolution towards higher redshift bins, irrespective of environment. We see no trends for star formation rate in either environment or galaxy type, given the large errors. In addition, we note that the environment does not seem to be the cause of the flattening of the main sequence at high stellar masses for our sample.en_US
dc.identifier.citationS M Randriamampandry, M Vaccari, K M Hess. 2020. Effect of the environment on star formation activity and stellar mass for star-forming galaxies in the COSMOS field, Monthly Notices of the Royal Astronomical Society, 499(1): 948–956en_US
dc.identifier.urihttps://doi.org/10.1093/mnras/staa2669
dc.identifier.urihttp://hdl.handle.net/10566/6090
dc.language.isoenen_US
dc.subjectgalaxiesen_US
dc.subjectevolution – galaxiesen_US
dc.subjectstar formationen_US
dc.subjectstellar content.en_US
dc.titleEffect of the environment on star formation activity and stellar mass for star-forming galaxies in the COSMOS fielden_US
dc.typeArticleen_US

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