Dwarf galaxies in Coma supercluster

DOI

We analyse Spitzer Multiband Imaging Photometer (MIPS) 24um observations, and Sloan Digital Sky Survey Data Release 7 optical broad-band photometry and spectra, to investigate the star formation (SF) properties of galaxies residing in the Coma supercluster region. We find that SF in dwarf galaxies is quenched only in the high-density environment at the centre of clusters and groups, but that passively evolving massive galaxies are found in all environments, indicating that massive galaxies can become passive via internal processes. The SF-density relation observed for the massive galaxies is weaker relative to the dwarfs, but both show a trend for the fraction of star-forming galaxies (f_SF_) declining to ~0 in the cluster cores. We find that active galactic nucleus activity is also suppressed among massive galaxies residing in the cluster cores.

Cone search capability for table J/MNRAS/404/1745/table1 (Catalogue of Coma galaxies detected at 24um)

Cone search capability for table J/MNRAS/404/1745/table3 (Catalogue of dwarf (z>15), k+A [EW(Ha)<2{AA} and EW(Hd)<-3{AA}] galaxies in the Coma supercluster)

Identifier
DOI http://doi.org/10.26093/cds/vizier.74041745
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/MNRAS/404/1745
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/404/1745
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/404/1745
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/MNRAS/404/1745
Provenance
Creator Mahajan S.; Haines C.P.; Raychaudhury S.
Publisher CDS
Publication Year 2011
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Galactic and extragalactic Astronomy; Interdisciplinary Astronomy; Natural Sciences; Observational Astronomy; Physics