The environments of starburst and post-starburst galaxies at z = 0.4-0.8

Bianca M. Poggianti, Alfonso Aragón-Salamanca, Dennis F Zaritsky, Gabriella De Lucia, Bo Milvang-Jensen, Vandana Desai, Pascale Jablonka, Claire Halliday, Gregory Rudnick, Jesus Varela, Steven Bamford, Philip Best, Douglas Clowe, Stefan Noll, Roberto Saglia, Roser Pelló, Luc Simard, Anja Von Der Linden, Simon White

Research output: Contribution to journalArticle

98 Citations (Scopus)

Abstract

Post-starburst (E+A or k+a) spectra, characterized by their exceptionally strong Balmer lines in absorption and the lack of emission lines, belong to galaxies in which the star formation (SF) activity ended abruptly sometime during the past Gyr. We perform a spectral analysis of galaxies in clusters, groups, poor groups, and the field at z = 0.4-0.8 based on the ESO Distant Cluster Survey. We find that the incidence of k+a galaxies at these redshifts depends strongly on environment. K+a's reside preferentially in clusters and, unexpectedly, in a subset of the σ = 200-400 km s-1 groups, those that have a low fraction of O II emitters. In these environments, 20%-30% of the star-forming galaxies have had their SF activity recently truncated. In contrast, there are proportionally fewer k+a galaxies in the field, the poor groups, and groups with a high O II fraction. An important result is that the incidence of k+a galaxies correlates with the cluster velocity dispersion: more massive clusters have higher proportions of k+a's. Spectra of dusty starburst candidates, with strong Balmer absorption and emission lines, present a very different environmental dependence from k+a's. They are numerous in all environments at z = 0.4-0.8, but they are especially numerous in all types of groups, favoring the hypothesis of triggering by a merger. We present the morphological type, stellar mass, luminosity, mass-to-light ratio, local galaxy density, and clustercentric distance distributions of galaxies of different spectral types. These properties are consistent with previous suggestions that cluster k+a galaxies are observed in a transition phase, at the moment they are rather massive S0 and Sa galaxies, evolving from star-forming, recently infallen later types to passively evolving cluster early-type galaxies. The correlation between k+a fraction and cluster velocity dispersion supports the hypothesis that k+a galaxies in clusters originate from processes related to the intracluster medium, while several possibilities are discussed for the origin of the puzzling k+a frequency in low-O II groups.

Original languageEnglish (US)
Pages (from-to)112-131
Number of pages20
JournalAstrophysical Journal
Volume693
Issue number1
DOIs
StatePublished - Mar 1 2009

Fingerprint

starburst galaxies
galaxies
phase transition
spectral analysis
merger
star formation
incidence
stars
mass to light ratios
European Southern Observatory
stellar mass
set theory
suggestion
spectrum analysis
proportion
emitters
luminosity

Keywords

  • galaxies: clusters: general
  • galaxies: evolution
  • galaxies: stellar content

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Poggianti, B. M., Aragón-Salamanca, A., Zaritsky, D. F., De Lucia, G., Milvang-Jensen, B., Desai, V., ... White, S. (2009). The environments of starburst and post-starburst galaxies at z = 0.4-0.8. Astrophysical Journal, 693(1), 112-131. https://doi.org/10.1088/0004-637X/693/1/112

The environments of starburst and post-starburst galaxies at z = 0.4-0.8. / Poggianti, Bianca M.; Aragón-Salamanca, Alfonso; Zaritsky, Dennis F; De Lucia, Gabriella; Milvang-Jensen, Bo; Desai, Vandana; Jablonka, Pascale; Halliday, Claire; Rudnick, Gregory; Varela, Jesus; Bamford, Steven; Best, Philip; Clowe, Douglas; Noll, Stefan; Saglia, Roberto; Pelló, Roser; Simard, Luc; Von Der Linden, Anja; White, Simon.

In: Astrophysical Journal, Vol. 693, No. 1, 01.03.2009, p. 112-131.

Research output: Contribution to journalArticle

Poggianti, BM, Aragón-Salamanca, A, Zaritsky, DF, De Lucia, G, Milvang-Jensen, B, Desai, V, Jablonka, P, Halliday, C, Rudnick, G, Varela, J, Bamford, S, Best, P, Clowe, D, Noll, S, Saglia, R, Pelló, R, Simard, L, Von Der Linden, A & White, S 2009, 'The environments of starburst and post-starburst galaxies at z = 0.4-0.8', Astrophysical Journal, vol. 693, no. 1, pp. 112-131. https://doi.org/10.1088/0004-637X/693/1/112
Poggianti BM, Aragón-Salamanca A, Zaritsky DF, De Lucia G, Milvang-Jensen B, Desai V et al. The environments of starburst and post-starburst galaxies at z = 0.4-0.8. Astrophysical Journal. 2009 Mar 1;693(1):112-131. https://doi.org/10.1088/0004-637X/693/1/112
Poggianti, Bianca M. ; Aragón-Salamanca, Alfonso ; Zaritsky, Dennis F ; De Lucia, Gabriella ; Milvang-Jensen, Bo ; Desai, Vandana ; Jablonka, Pascale ; Halliday, Claire ; Rudnick, Gregory ; Varela, Jesus ; Bamford, Steven ; Best, Philip ; Clowe, Douglas ; Noll, Stefan ; Saglia, Roberto ; Pelló, Roser ; Simard, Luc ; Von Der Linden, Anja ; White, Simon. / The environments of starburst and post-starburst galaxies at z = 0.4-0.8. In: Astrophysical Journal. 2009 ; Vol. 693, No. 1. pp. 112-131.
@article{cc965be57a424c1694137df73c038274,
title = "The environments of starburst and post-starburst galaxies at z = 0.4-0.8",
abstract = "Post-starburst (E+A or k+a) spectra, characterized by their exceptionally strong Balmer lines in absorption and the lack of emission lines, belong to galaxies in which the star formation (SF) activity ended abruptly sometime during the past Gyr. We perform a spectral analysis of galaxies in clusters, groups, poor groups, and the field at z = 0.4-0.8 based on the ESO Distant Cluster Survey. We find that the incidence of k+a galaxies at these redshifts depends strongly on environment. K+a's reside preferentially in clusters and, unexpectedly, in a subset of the σ = 200-400 km s-1 groups, those that have a low fraction of O II emitters. In these environments, 20{\%}-30{\%} of the star-forming galaxies have had their SF activity recently truncated. In contrast, there are proportionally fewer k+a galaxies in the field, the poor groups, and groups with a high O II fraction. An important result is that the incidence of k+a galaxies correlates with the cluster velocity dispersion: more massive clusters have higher proportions of k+a's. Spectra of dusty starburst candidates, with strong Balmer absorption and emission lines, present a very different environmental dependence from k+a's. They are numerous in all environments at z = 0.4-0.8, but they are especially numerous in all types of groups, favoring the hypothesis of triggering by a merger. We present the morphological type, stellar mass, luminosity, mass-to-light ratio, local galaxy density, and clustercentric distance distributions of galaxies of different spectral types. These properties are consistent with previous suggestions that cluster k+a galaxies are observed in a transition phase, at the moment they are rather massive S0 and Sa galaxies, evolving from star-forming, recently infallen later types to passively evolving cluster early-type galaxies. The correlation between k+a fraction and cluster velocity dispersion supports the hypothesis that k+a galaxies in clusters originate from processes related to the intracluster medium, while several possibilities are discussed for the origin of the puzzling k+a frequency in low-O II groups.",
keywords = "galaxies: clusters: general, galaxies: evolution, galaxies: stellar content",
author = "Poggianti, {Bianca M.} and Alfonso Arag{\'o}n-Salamanca and Zaritsky, {Dennis F} and {De Lucia}, Gabriella and Bo Milvang-Jensen and Vandana Desai and Pascale Jablonka and Claire Halliday and Gregory Rudnick and Jesus Varela and Steven Bamford and Philip Best and Douglas Clowe and Stefan Noll and Roberto Saglia and Roser Pell{\'o} and Luc Simard and {Von Der Linden}, Anja and Simon White",
year = "2009",
month = "3",
day = "1",
doi = "10.1088/0004-637X/693/1/112",
language = "English (US)",
volume = "693",
pages = "112--131",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "1",

}

TY - JOUR

T1 - The environments of starburst and post-starburst galaxies at z = 0.4-0.8

AU - Poggianti, Bianca M.

AU - Aragón-Salamanca, Alfonso

AU - Zaritsky, Dennis F

AU - De Lucia, Gabriella

AU - Milvang-Jensen, Bo

AU - Desai, Vandana

AU - Jablonka, Pascale

AU - Halliday, Claire

AU - Rudnick, Gregory

AU - Varela, Jesus

AU - Bamford, Steven

AU - Best, Philip

AU - Clowe, Douglas

AU - Noll, Stefan

AU - Saglia, Roberto

AU - Pelló, Roser

AU - Simard, Luc

AU - Von Der Linden, Anja

AU - White, Simon

PY - 2009/3/1

Y1 - 2009/3/1

N2 - Post-starburst (E+A or k+a) spectra, characterized by their exceptionally strong Balmer lines in absorption and the lack of emission lines, belong to galaxies in which the star formation (SF) activity ended abruptly sometime during the past Gyr. We perform a spectral analysis of galaxies in clusters, groups, poor groups, and the field at z = 0.4-0.8 based on the ESO Distant Cluster Survey. We find that the incidence of k+a galaxies at these redshifts depends strongly on environment. K+a's reside preferentially in clusters and, unexpectedly, in a subset of the σ = 200-400 km s-1 groups, those that have a low fraction of O II emitters. In these environments, 20%-30% of the star-forming galaxies have had their SF activity recently truncated. In contrast, there are proportionally fewer k+a galaxies in the field, the poor groups, and groups with a high O II fraction. An important result is that the incidence of k+a galaxies correlates with the cluster velocity dispersion: more massive clusters have higher proportions of k+a's. Spectra of dusty starburst candidates, with strong Balmer absorption and emission lines, present a very different environmental dependence from k+a's. They are numerous in all environments at z = 0.4-0.8, but they are especially numerous in all types of groups, favoring the hypothesis of triggering by a merger. We present the morphological type, stellar mass, luminosity, mass-to-light ratio, local galaxy density, and clustercentric distance distributions of galaxies of different spectral types. These properties are consistent with previous suggestions that cluster k+a galaxies are observed in a transition phase, at the moment they are rather massive S0 and Sa galaxies, evolving from star-forming, recently infallen later types to passively evolving cluster early-type galaxies. The correlation between k+a fraction and cluster velocity dispersion supports the hypothesis that k+a galaxies in clusters originate from processes related to the intracluster medium, while several possibilities are discussed for the origin of the puzzling k+a frequency in low-O II groups.

AB - Post-starburst (E+A or k+a) spectra, characterized by their exceptionally strong Balmer lines in absorption and the lack of emission lines, belong to galaxies in which the star formation (SF) activity ended abruptly sometime during the past Gyr. We perform a spectral analysis of galaxies in clusters, groups, poor groups, and the field at z = 0.4-0.8 based on the ESO Distant Cluster Survey. We find that the incidence of k+a galaxies at these redshifts depends strongly on environment. K+a's reside preferentially in clusters and, unexpectedly, in a subset of the σ = 200-400 km s-1 groups, those that have a low fraction of O II emitters. In these environments, 20%-30% of the star-forming galaxies have had their SF activity recently truncated. In contrast, there are proportionally fewer k+a galaxies in the field, the poor groups, and groups with a high O II fraction. An important result is that the incidence of k+a galaxies correlates with the cluster velocity dispersion: more massive clusters have higher proportions of k+a's. Spectra of dusty starburst candidates, with strong Balmer absorption and emission lines, present a very different environmental dependence from k+a's. They are numerous in all environments at z = 0.4-0.8, but they are especially numerous in all types of groups, favoring the hypothesis of triggering by a merger. We present the morphological type, stellar mass, luminosity, mass-to-light ratio, local galaxy density, and clustercentric distance distributions of galaxies of different spectral types. These properties are consistent with previous suggestions that cluster k+a galaxies are observed in a transition phase, at the moment they are rather massive S0 and Sa galaxies, evolving from star-forming, recently infallen later types to passively evolving cluster early-type galaxies. The correlation between k+a fraction and cluster velocity dispersion supports the hypothesis that k+a galaxies in clusters originate from processes related to the intracluster medium, while several possibilities are discussed for the origin of the puzzling k+a frequency in low-O II groups.

KW - galaxies: clusters: general

KW - galaxies: evolution

KW - galaxies: stellar content

UR - http://www.scopus.com/inward/record.url?scp=67549120555&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=67549120555&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/693/1/112

DO - 10.1088/0004-637X/693/1/112

M3 - Article

VL - 693

SP - 112

EP - 131

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1

ER -