Star formation, starbursts and quenching across the Coma supercluster

  title={Star formation, starbursts and quenching across the Coma supercluster},
  author={Smriti Mahajan and Chris P. Haines and Somak Raychaudhury},
  journal={Monthly Notices of the Royal Astronomical Society},
We analyse Spitzer MIPS 24� m observations, and Sloan Digital Sky Survey (DR7) optical broadband photometry and spectra, to investigate the star formation properties of galaxies residing in the Coma supercluster region. We find that star fo rmation (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… Expand
The evolution of dwarf galaxies in the Coma supercluster
We employ spectroscopic and photometric data from the Sloan Digital Sky Survey Data Release 7, in a 500-deg 2 region, to understand the evolution of dwarf [~(M* + 2) < M z < M * + 4] galaxies in theExpand
Dense environments are known to quench star formation in galaxies, but it is still unknown what mechanism(s) are directly responsible. In this paper, we study the star formation of galaxies in A2029Expand
ACCESS – IV. The quenching of star formation in a cluster population of dusty S0s
We present an analysis of the mid-infrared (MIR) colours of 165 70-μm-detected galaxies in the Shapley supercluster core (SSC) at z= 0.048 using panoramic Spitzer/MIPS 24- and 70-μm imaging. WhileExpand
The stellar populations of bright coma cluster galaxies
In this paper we study the stellar populations of 356 bright, M r < -19, Coma cluster members located in a 2° field centred on the cluster core using Sloan Digital Sky Survey (SDSS) Data Release 7Expand
The complete census of optically selected AGNs in the Coma supercluster: the dependence of AGN activity on the local environment
Aims. To investigate the dependence of the occurrence of active galactic nuclei (AGNs) on local galaxy density, we study the nuclear properties of ∼5000 galaxies in the Coma supercluster whoseExpand
The velocity modulation of galaxy properties in and near clusters: quantifying the decrease in star formation in backsplash galaxies
Ongoing or recent star formation in galaxies is known to increase with increasing projected distance from the centre of a cluster out to several times its virial radius (Rv). Using a complete sampleExpand
Spatial and Kinematic Distributions of Transition Populations in Intermediate Redshift Galaxy Clusters
We analyze the spatial and velocity distributions of confirmed members in five massive clusters of galaxies at intermediate redshift (0.5 < z < 0.9) to investigate the physical processes drivingExpand
The lack of star formation gradients in galaxy groups up to z ~ 1.6
In the local Universe, galaxy properties show a strong dependence on environment. In cluster cores, early-type galaxies dominate, whereas star-forming galaxies are more and more common in theExpand
We present images of extended H{alpha} clouds associated with 14 member galaxies in the Coma cluster obtained from deep narrowband imaging observations with the Suprime-Cam at the Subaru Telescope.Expand
Evidence for galaxies being pre-processed before accreted into clusters
I use the spectroscopic data for galaxies in and around 28 nearby (0.02 ≤ z ≤ 0.06) X-ray bright galaxy clusters, to show that the incidence of k+A (or post-starburst) galaxies (EW(Ha) 3A inExpand


Linking star formation and environment in the A901/902 supercluster
We investigate correlations between the location of galaxies in dense environments and their degree of star formation activity. Using photometric redshifts and spectral classifications from theExpand
Star formation in galaxies falling into clusters along supercluster-scale filaments
With the help of a statistical parameter derived from optical spectra, we show that the current star formation rate of a galaxy, falling into a cluster along a supercluster filament, is likely toExpand
Red star-forming and blue passive galaxies in clusters
ABSTRACT We explore the relation between colour (measured from photometry) and specific star for-mation rate (derived from optical spectra obtained by SDSS DR4) of over 6000 galaxies(M r 6−20.5) inExpand
The STAGES view of red spirals and dusty red galaxies: Mass-dependent quenching of star formation in cluster infall
We investigate the properties of optically passive spirals and dusty red galaxies in the A901/2 cluster complex at redshift ∼0.17 using rest-frame near-ultraviolet–optical spectral energyExpand
A large population of recently quenched red-sequence dwarf galaxies in the outskirts of the Coma cluster
We analyse the stellar populations of 75 red-sequence dwarf galaxies in the Coma cluster, based on high signal-to-noise ratio spectroscopy from the 6.5-m MMT. The sample covers a luminosity range 3‐4Expand
Star formation in galaxies along the Pisces‐Cetus Supercluster filaments
We investigate the variation of current star formation in galaxies as a function of distance along three supercluster filaments, each joining pairs of rich clusters, in the Pisces-Cetus supercluster,Expand
The dependence of Star Formation on Galaxy Stellar Mass
We combine Spitzer 24 μm observations with data from the COMBO-17 survey for ~15,000 0.2 < z ≤ 1 galaxies to determine how the average star formation rates (SFRs) have evolved for galaxyExpand
Discovery of intergalactic radio emission in the Coma–A1367 supercluster
THE Coma cluster is a rich cluster of galaxies nested in an even larger supercluster of galaxies. The plane of the supercluster seems to be defined by the Coma cluster itself and another galaxyExpand
The Origin of Star Formation Gradients in Rich Galaxy Clusters
We examine the origin of clustercentric gradients in the star formation rates and colors of rich cluster galaxies within the context of a simple model where clusters are built through the ongoingExpand
The ultraviolet luminosity function and star formation rate of the Coma cluster
We present estimates of the GALEX NUV and FUV luminosity functions (LFs) of the Coma cluster, over a total area of ~9 deg^2 (~25 Mpc^2), i.e. from the cluster center to the virial radius. OurExpand