The H alpha star formation main sequence in cluster and field galaxies at z similar to 1.6

Nantais, Julie; Wilson, Gillian; Muzzin, Adam; Old, Lyndsay J.; Demarco, Ricardo; Cerulo, Pierluigi; Balogh, Michael; Rudnick, Gregory; Chan, Jeffrey; Cooper, M. C.; Forrest, Ben; Hayden, Brian; Lidman, Chris; Noble, Allison; Perlmutter, Saul; et. al.

Abstract

We calculate H alpha-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 similar to 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 similar to 1.6 clusters have been accreted too recently to show signs of environmental quenching. It is also possible that the clusters arc 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.

Más información

Título según WOS: The H alpha star formation main sequence in cluster and field galaxies at z similar to 1.6
Título de la Revista: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volumen: 499
Número: 3
Editorial: Oxford Academic
Fecha de publicación: 2020
Página de inicio: 3061
Página final: 3070
DOI:

10.1093/MNRAS/STAA2872

Notas: ISI