Star-forming galaxy evolution in nearby rich clusters
Reads0
Chats0
TLDR
In this article, the star formation of galaxies in A2029 and compare it to that of Coma, combining indicators at 24?m, H?, and UV down to rates of 0.03 M??yr?1.Abstract:
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 A2029 and compare it to that of Coma, combining indicators at 24 ?m, H?, and UV down to rates of 0.03 M ??yr?1. We show that A2029's star-forming galaxies follow the same mass-SFR relation as the field. The Coma cluster, on the other hand, has a population of galaxies with star formation rates (SFRs) significantly lower than the field mass-SFR relation, indicative of galaxies in the process of being quenched. Over half of these galaxies also host active galactic nuclei. Ram-pressure stripping and starvation/strangulation are the most likely mechanisms for suppressing the star formation in these galaxies, but we are unable to disentangle which is dominating. The differences we see between the two clusters' populations of star-forming galaxies may be related to their accretion histories, with A2029 having accreted its star-forming galaxies more recently than Coma. Additionally, many early-type galaxies in A2029 are detected at 24 ?m and/or in the far-UV, but this emission is not directly related to star formation. Similar galaxies have probably been classified as star forming in previous studies of dense clusters, possibly obscuring some of the effects of the cluster environment on true star-forming galaxies.read more
Citations
More filters
Journal ArticleDOI
Slow Quenching of Star Formation in OMEGAWINGS Clusters: Galaxies in Transition in the Local Universe
Angela Paccagnella,Angela Paccagnella,Benedetta Vulcani,Bianca M. Poggianti,Alessia Moretti,Alessia Moretti,Jacopo Fritz,Marco Gullieuszik,Warrick J. Couch,Daniela Bettoni,Antonio Cava,Mauro D'Onofrio,Mauro D'Onofrio,Giovanni Fasano +13 more
TL;DR: In this paper, the star formation rate (SFR) as a function of stellar mass (M) in galaxy clusters was investigated, and a sample of galaxies with masses drawn from the WIde-field Nearby Galaxy-cluster Survey (WINGS) and its recent extension OMEGAWINGS was used.
Journal ArticleDOI
Slow quenching of star formation in OMEGAWINGS clusters: galaxies in transition in the local universe
Angela Paccagnella,Benedetta Vulcani,Bianca M. Poggianti,Alessia Moretti,Jacopo Fritz,Marco Gullieuszik,Warrick J. Couch,Daniela Bettoni,Antonio Cava,Giovanni Fasano,Mauro D'Onofrio +10 more
TL;DR: In this article, the star formation rate (SFR) as a function of stellar mass (M$_*$) in galaxy clusters at 0.04
Journal ArticleDOI
The VLA-COSMOS 3 GHz large project: evolution of specific star formation rates out to z ~ 5
Sarah K. Leslie,Eva Schinnerer,Daizhong Liu,Benjamin Magnelli,H. S. B. Algera,Alexander Karim,Iary Davidzon,Ghassem Gozaliasl,E. F. Jiménez-Andrade,Philipp Lang,Mark Sargent,Mladen Novak,Brent Groves,Vernesa Smolčić,G. Zamorani,Mattia Vaccari,A. J. Battisti,Eleni Vardoulaki,Yingjie Peng,Jeyhan S. Kartaltepe +19 more
TL;DR: In this article, the main sequence of star-forming galaxies (MS) was measured using mean stacks of 3 GHz radio continuum images to derive average SFRs for 200,000 mass-selected galaxies at the COSMOS field.
Journal ArticleDOI
THE RELATION BETWEEN LUMINOUS AGNs AND STAR FORMATION IN THEIR HOST GALAXIES
TL;DR: In this paper, the relation of active galactic nuclei (AGNs) to star formation in their host galaxies was studied, using spectral energy distribution (SED) templates to decompose the galaxy SEDs and estimate star formation rates (SFRs), AGN luminosities, and host galaxy stellar masses.
Journal ArticleDOI
The Velocity Dispersion Function of Very Massive Galaxy Clusters: Abell 2029 and Coma
Jubee Sohn,Margaret J. Geller,H. Jabran Zahid,Daniel G. Fabricant,Antonaldo Diaferio,Kenneth J. Rines +5 more
TL;DR: In this paper, the luminosity functions, stellar mass functions and velocity dispersion functions for quiescent galaxies were derived from the MMT/Hectospec redshift survey for galaxy cluster Abell 2029 and Coma.
References
More filters
Journal ArticleDOI
The Structure of cold dark matter halos
TL;DR: In this article, high-resolution N-body simulations show that the density profiles of dark matter halos formed in the standard CDM cosmogony can be fit accurately by scaling a simple universal profile.
Journal ArticleDOI
On the variation of the initial mass function
TL;DR: In this paper, the uncertainty inherent in any observational estimate of the IMF is investigated by studying the scatter introduced by Poisson noise and the dynamical evolution of star clusters, and it is found that this apparent scatter reproduces quite well the observed scatter in power-law index determinations, thus defining the fundamental limit within which any true variation becomes undetectable.
Journal ArticleDOI
DAOPHOT: A Computer Program for Crowded-Field Stellar Photometry
TL;DR: The DAOPHOT program as mentioned in this paper performs stellar photometry in crowded fields using CCD images of stars in a crowded field, and shortcomings and possible improvements of the program are considered.
Journal ArticleDOI
Classification parameters for the emission-line spectra of extragalactic objects
TL;DR: In this paper, the merits of various emission-line intensity ratios for classifying the spectra of extragalactic objects were investigated and it was shown empirically that several combinations of easily-measured lines can be used to separate objects into one of four categories according to the principal excitation mechanism: normal H II regions, planetary nebulae, objects photoionized by a power-law continuum, and objects excited by shock-wave heating.
Book ChapterDOI
Third Reference Catalogue of Bright Galaxies
Gerard de Vaucouleurs,Antoinette de Vaucouleurs,Harold G. Corwin,Ronald J. Buta,G. Paturel,P. Fouque +5 more
TL;DR: In this article, a reference catalogue of bright galaxies in three volumes reflects the explosive growth of extragalactic astronomy over the last 15 years and includes all galaxies with apparent diameters larger than one arc minute, magnitudes brighter than about magnitude 15.5, and redshifts not larger than 15,000 km/sec.
Related Papers (5)
Galaxy morphology in rich clusters: Implications for the formation and evolution of galaxies
On the Infall of Matter into Clusters of Galaxies and Some Effects on Their Evolution
James E. Gunn,J. Richard Gott +1 more
Mass and environment as drivers of galaxy evolution in SDSS and zCOSMOS and the origin of the Schechter function
Yingjie Peng,Simon J. Lilly,Katarina Kovac,Micol Bolzonella,Lucia Pozzetti,Alvio Renzini,G. Zamorani,Olivier Ilbert,C. Knobel,A. Iovino,Christian Maier,Olga Cucciati,Lidia Tasca,C. Marcella Carollo,John D. Silverman,P. Kampczyk,Loic de Ravel,David B. Sanders,Nick Scoville,Thierry Contini,Vincenzo Mainieri,Marco Scodeggio,Jean-Paul Kneib,Olivier Le Fevre,S. Bardelli,Angela Bongiorno,Karina Caputi,Graziano Coppa,Sylvain de la Torre,P. Franzetti,Bianca Garilli,F. Lamareille,Jean-Francois Le Borgne,Vincent Le Brun,M. Mignoli,Enrique Perez Montero,R. Pello,E. Ricciardelli,Masayuki Tanaka,Laurence Tresse,Daniela Vergani,Niraj Welikala,E. Zucca,Pascal Oesch,U. Abbas,Luke A. Barnes,Rongmon Bordoloi,D. Bottini,A. Cappi,Paolo Cassata,Andrea Cimatti,M. Fumana,Günther Hasinger,Anton M. Koekemoer,A. Leauthaud,D. Maccagni,Christian Marinoni,H. J. McCracken,P. Memeo,B. Meneux,Preethi Nair,Cristiano Porciani,V. Presotto,Roberto Scaramella +63 more