The H α star formation main sequence in cluster and field galaxies at z ∼1.6
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Date
2020-12
Authors
Nantais J.
Wilson G.
Muzzin A.
Old L.J.
Demarco R.
Cerulo P.
Balogh M.
Rudnick G.
Chan J.
Cooper M.C.
Profesor/a Guía
Facultad/escuela
Idioma
en
Journal Title
Journal ISSN
Volume Title
Publisher
Oxford University Press
Nombre de Curso
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Abstract
We calculate H α-based star formation rates and determine the star formation rate-stellar mass relation for members of three Spitzer Adaptation of the Red-Sequence Cluster Survey (SpARCS) clusters at z ∼1.6 and serendipitously identified field galaxies at similar redshifts to the clusters. We find similar star formation rates in cluster and field galaxies throughout our range of stellar masses. The results are comparable to those seen in other clusters at similar redshifts, and consistent with our previous photometric evidence for little quenching activity in clusters. One possible explanation for our results is that galaxies in our z ∼1.6 clusters have been accreted too recently to show signs of environmental quenching. It is also possible that the clusters are not yet dynamically mature enough to produce important environmental quenching effects shown to be important at low redshift, such as ram-pressure stripping or harassment. © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.
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Indexación Scopus
Keywords
Star Formation, Galaxies, Galactic Evolution
Citation
Monthly Notices of the Royal Astronomical Society, Volume 499, Issue 3, Pages 3061 - 30701 December 2020
DOI
10.1093/mnras/staa2872