The 2dF Galaxy Redshift Survey: The environmental dependence of galaxy star formation rates near clusters
Ian Lewis,Michael L. Balogh,Roberto De Propris,Warrick J. Couch,Richard G. Bower,Alison R. Offer,Joss Bland-Hawthorn,Ivan K. Baldry,Carlton M. Baugh,Terry J. Bridges,Russell D. Cannon,Shaun Cole,Matthew Colless,Chris A. Collins,Nicholas Cross,Nicholas Cross,Gavin Dalton,Simon P. Driver,Simon P. Driver,George Efstathiou,Richard S. Ellis,Carlos S. Frenk,Karl Glazebrook,Ed Hawkins,Carole Jackson,Ofer Lahav,Stuart Lumsden,Stephen J. Maddox,Darren Madgwick,Peder Norberg,John A. Peacock,Will J. Percival,Bruce A. Peterson,William J. Sutherland,Keith Taylor +34 more
TLDR
In this paper, the authors measured the equivalent width of the Hα emission line for 11 0006 galaxies brighter than M −−19 (Ω_Λ = 0.7, Ω_m = 0.3, H_0 = 70 km s−1) Mpc^(−1)) at 0.05 < z < 0.1 in the 2dF Galaxy Redshift Survey.Abstract:
We have measured the equivalent width of the Hα emission line for 11 006 galaxies brighter than M_b-=-−19 (Ω_Λ = 0.7, Ω_m = 0.3, H_0 = 70 km s^(−1) Mpc^(−1)) at 0.05 < z < 0.1 in the 2dF Galaxy Redshift Survey (2dFGRS), in the fields of 17 known galaxy clusters. The limited redshift range ensures that our results are insensitive to aperture bias, and to residuals from night sky emission lines. We use these measurements to trace μ*, the star formation rate normalized to L*, as a function of distance from the cluster centre, and local projected galaxy density. We find that the distribution of μ* steadily skews toward larger values with increasing distance from the cluster centre, converging to the field distribution at distances greater than ∼3 times the virial radius. A correlation between star formation rate and local projected density is also found, which is independent of cluster velocity dispersion and disappears at projected densities below ∼1 galaxy Mpc^(−2) (brighter than M_b = −19). This characteristic scale corresponds approximately to the mean density at the cluster virial radius. The same correlation holds for galaxies more than two virial radii from the cluster centre. We conclude that environmental influences on galaxy properties are not restricted to cluster cores, but are effective in all groups where the density exceeds this critical value. The present-day abundance of such systems, and the strong evolution of this abundance, makes it likely that hierarchical growth of structure plays a significant role in decreasing the global average star formation rate. Finally, the low star formation rates well beyond the virialized cluster rule out severe physical processes, such as ram pressure stripping of disc gas, as being completely responsible for the variations in galaxy properties with environment.read more
Citations
More filters
Journal ArticleDOI
How do galaxies get their gas
TL;DR: In this article, the authors show that at low z < 1, the cosmic star formation rate degrades due to geometry, as the typical cross section of filaments begins to exceed that of the galaxies at their intersections.
Journal ArticleDOI
The reversal of the star formation-density relation in the distant universe
David Elbaz,David Elbaz,Emanuele Daddi,Emanuele Daddi,D. Le Borgne,D. Le Borgne,Mark Dickinson,David M. Alexander,Ranga-Ram Chary,Jean-Luc Starck,W. N. Brandt,Manfred G. Kitzbichler,Emily MacDonald,Mario Nonino,Paola Popesso,Daniel Stern,Eros Vanzella +16 more
TL;DR: In this paper, the authors studied the relationship between the local environment of galaxies and their star formation rate (SFR) in the Great Observatories Origins Deep Survey, GOODS, at z∼1.
Journal ArticleDOI
Nearly 5000 Distant Early-Type Galaxies in COMBO-17: A Red Sequence and Its Evolution since z ~ 1
Eric F. Bell,Christian Wolf,Klaus Meisenheimer,Hans-Walter Rix,Andrea Borch,Simon Dye,M. Kleinheinrich,Lutz Wisotzki,Daniel H. McIntosh +8 more
TL;DR: In this paper, the rest-frame colors and luminosities of 25,000 mR 24 galaxies in the redshift range 0.2 < z ≤ 1.1 drawn from the COMBO-17 survey (Classifying Objects by Medium-Band Observations in 17 Filters).
Journal ArticleDOI
The environmental dependence of the relations between stellar mass, structure, star formation and nuclear activity in galaxies
Guinevere Kauffmann,Simon D. M. White,Timothy M. Heckman,Brice Ménard,Jarle Brinchmann,Stephane Charlot,Christy Tremonti,Jon Brinkmann +7 more
TL;DR: In this article, the authors used a sample of galaxies drawn from the Sloan Digital Sky Survey to study how structure, star formation and nuclear activity depend on local density and on stellar mass.
Journal ArticleDOI
Environmental Effects on Late-Type Galaxies in Nearby Clusters
TL;DR: The transformations that take place in late-type galaxies in the environment of rich clusters of galaxies are reviewed in this paper, where the authors learn an important lesson on the latest stages of galaxy evolution, whether they were formed in situ and survived as such, avoiding transformation or even destruction, or if they are newcomers that have recently fallen in from outside.
References
More filters
Journal ArticleDOI
On the Infall of Matter into Clusters of Galaxies and Some Effects on Their Evolution
James E. Gunn,J. Richard Gott +1 more
Journal ArticleDOI
Galaxy morphology in rich clusters: Implications for the formation and evolution of galaxies
TL;DR: In this paper, a study of the galaxy populations in 55 rich clusters is presented together with a discussion of the implications for the formation and/or evolution of different morphological types.
Journal ArticleDOI
The 2dF Galaxy Redshift Survey: spectra and redshifts
Matthew Colless,Gavin Dalton,Stephen J. Maddox,William J. Sutherland,Peder Norberg,Shaun Cole,Joss Bland-Hawthorn,Terry J. Bridges,Russell D. Cannon,Chris A. Collins,Warrick J. Couch,Nicholas Cross,K. Deeley,Roberto De Propris,Simon P. Driver,George Efstathiou,Richard S. Ellis,Carlos S. Frenk,Karl Glazebrook,Carole Jackson,Ofer Lahav,Ian Lewis,Stuart Lumsden,Darren Madgwick,John A. Peacock,Bruce A. Peterson,Ian Price,M. Seaborne,Keith Taylor +28 more
TL;DR: The 2dF Galaxy Redshift Survey (2dFGRS) as mentioned in this paper uses the 2DF multifibre spectrograph on the Anglo-Australian Telescope, which is capable of observing 400 objects simultaneously over a 2° diameter field.
Journal ArticleDOI
High-redshift galaxies in the hubble deep field : colour selection and star formation history to z 4
Piero Madau,Henry C. Ferguson,Mark Dickinson,Mauro Giavalisco,Charles C. Steidel,Andrew S. Fruchter +5 more
TL;DR: In this paper, a sample of star-forming galaxies at 2 ≲z ≲ 4.5 was constructed from the Hubble Deep Field (HDF) images, which is 3 times higher than the local value but still 4 times lower than the rate observed at z ≈ 1.75.
Journal ArticleDOI
Spectral classification of emission - line galaxies
TL;DR: In this paper, a revised method of classification of narrow-line active galaxies and H II region-like galaxies is proposed, which involves the line ratios which take full advantage of the physical distinction between the two types of objects and minimize the effects of reddening correction and errors in the flux calibration.
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
Galaxy harassment and the evolution of clusters of galaxies
The Sloan Digital Sky Survey: Technical summary
Donald G. York,Jennifer Adelman,John E. Anderson,Scott F. Anderson,James Annis,Neta A. Bahcall,J. A. Bakken,Robert H. Barkhouser,Steven Bastian,E. Berman,William N. Boroski,Steve Bracker,Charlie Briegel,John W. Briggs,Jon Brinkmann,Robert J. Brunner,Scott Burles,Larry N. Carey,Michael A. Carr,Francisco J. Castander,Francisco J. Castander,Bing Chen,Patrick L. Colestock,Andrew J. Connolly,James H. Crocker,István Csabai,István Csabai,Paul C. Czarapata,John Eric Davis,Mamoru Doi,Tom Dombeck,Daniel J. Eisenstein,Nancy Ellman,Brian R. Elms,Brian R. Elms,Michael L. Evans,Xiaohui Fan,Glenn R. Federwitz,Larry Fiscelli,Scott D. Friedman,Joshua A. Frieman,Joshua A. Frieman,Masataka Fukugita,Bruce Gillespie,James E. Gunn,Vijay K. Gurbani,Ernst De Haas,M. Haldeman,Frederick H. Harris,Jeffrey J. E. Hayes,Timothy M. Heckman,Gregory S. Hennessy,Robert B. Hindsley,S. Holm,Donald J. Holmgren,Chi Hao Huang,Charles L. Hull,Don Husby,Shin-Ichi Ichikawa,Takashi Ichikawa,Zěljko Ivezić,Stephen M. Kent,Rita S. J. Kim,E. Kinney,Mark A. Klaene,A. N. Kleinman,Scot Kleinman,Gillian R. Knapp,John Korienek,Richard G. Kron,Richard G. Kron,Peter Z. Kunszt,D. Q. Lamb,Brian C. Lee,R. French Leger,Siriluk Limmongkol,Carl Lindenmeyer,Dan Long,Craig Loomis,Jon Loveday,Rich Lucinio,Robert H. Lupton,Bryan Mackinnon,Bryan Mackinnon,Edward J. Mannery,Paul M. Mantsch,Bruce Margon,Peregrine M. McGehee,Timothy A. McKay,Avery Meiksin,Aronne Merelli,David G. Monet,Jeffrey A. Munn,Vijay K. Narayanan,Thomas Nash,Eric H. Neilsen,Rich Neswold,Heidi Jo Newberg,Heidi Jo Newberg,Robert C. Nichol,T. Nicinski,T. Nicinski,Mario Nonino,Norio Okada,Sadanori Okamura,Jeremiah P. Ostriker,Russell Owen,A. George Pauls,John Peoples,R. Peterson,Don Petravick,Jeffrey R. Pier,Adrian Pope,Ruth Pordes,Angela Prosapio,R. Rechenmacher,Thomas R. Quinn,Gordon T. Richards,Michael Richmond,Claudio H. Rivetta,Constance M. Rockosi,Kurt Ruthmansdorfer,Dale Sandford,David J. Schlegel,Donald P. Schneider,Maki Sekiguchi,G. Sergey,Kazuhiro Shimasaku,Walter A. Siegmund,Stephen A. Smee,J. Allyn Smith,S. A. Snedden,Robert Stone,Chris Stoughton,Michael A. Strauss,Christopher W. Stubbs,Mark SubbaRao,Alexander S. Szalay,István Szapudi,Gyula P. Szokoly,Anirudda R. Thakar,Christy Tremonti,Douglas L. Tucker,Alan Uomoto,Daniel E. Vanden Berk,Michael S. Vogeley,Patrick Waddell,Shu I. Wang,Masaru Watanabe,David H. Weinberg,Brian Yanny,Naoki Yasuda +151 more