The environmental dependence of the infrared luminosity and stellar mass functions

Michael L. Balogh; Daniel Christlein; Ann I. Zabludoff; Dennis Zaritsky

doi:10.1086/321670

The environmental dependence of the infrared luminosity and stellar mass functions

Michael L. Balogh, Daniel Christlein, Ann I. Zabludoff, Dennis Zaritsky

Astronomy

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92 Scopus citations

Abstract

We investigate the dependence of the galaxy infrared luminosity function (LF) and the associated stellar mass function (SMF) on environment and spectral type using photometry from the Two Micron All Sky Survey and redshifts from the Las Campanas Redshift Survey for galaxies brighter than M_J 7< -19 + 5 log h. In the field environment, the LFs of galaxies with emission lines have much steeper faint-end slopes (α_J = -1.39) than those of galaxies without emission lines (α_J = -0.59). In the cluster environment, however, even the non-emission-line galaxies have a steep faint-end LF (α_J = -1.22). There is also a significant (95%) difference between the overall cluster and field LFs, Δα_J = -0.34 and ΔM*_J = -0.54. All these variations are more pronounced in the SMFs, which we compute by relating the strength of the 4000 Å break in the optical spectra to a stellar mass-to-light ratio.

Original language	English (US)
Pages (from-to)	117-125
Number of pages	9
Journal	Astrophysical Journal
Volume	557
Issue number	1 PART 1
DOIs	https://doi.org/10.1086/321670
State	Published - Aug 10 2001

Keywords

Galaxies: clusters: general
Galaxies: evolution
Galaxies: luminosity function, mass function
Infrared: galaxies

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/321670

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title = "The environmental dependence of the infrared luminosity and stellar mass functions",

abstract = "We investigate the dependence of the galaxy infrared luminosity function (LF) and the associated stellar mass function (SMF) on environment and spectral type using photometry from the Two Micron All Sky Survey and redshifts from the Las Campanas Redshift Survey for galaxies brighter than MJ 7< -19 + 5 log h. In the field environment, the LFs of galaxies with emission lines have much steeper faint-end slopes (αJ = -1.39) than those of galaxies without emission lines (αJ = -0.59). In the cluster environment, however, even the non-emission-line galaxies have a steep faint-end LF (αJ = -1.22). There is also a significant (95%) difference between the overall cluster and field LFs, ΔαJ = -0.34 and ΔM*J = -0.54. All these variations are more pronounced in the SMFs, which we compute by relating the strength of the 4000 {\AA} break in the optical spectra to a stellar mass-to-light ratio.",

keywords = "Galaxies: clusters: general, Galaxies: evolution, Galaxies: luminosity function, mass function, Infrared: galaxies",

author = "Balogh, {Michael L.} and Daniel Christlein and Zabludoff, {Ann I.} and Dennis Zaritsky",

year = "2001",

month = aug,

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doi = "10.1086/321670",

language = "English (US)",

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journal = "Astrophysical Journal",

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AU - Balogh, Michael L.

AU - Christlein, Daniel

AU - Zabludoff, Ann I.

AU - Zaritsky, Dennis

PY - 2001/8/10

Y1 - 2001/8/10

N2 - We investigate the dependence of the galaxy infrared luminosity function (LF) and the associated stellar mass function (SMF) on environment and spectral type using photometry from the Two Micron All Sky Survey and redshifts from the Las Campanas Redshift Survey for galaxies brighter than MJ 7< -19 + 5 log h. In the field environment, the LFs of galaxies with emission lines have much steeper faint-end slopes (αJ = -1.39) than those of galaxies without emission lines (αJ = -0.59). In the cluster environment, however, even the non-emission-line galaxies have a steep faint-end LF (αJ = -1.22). There is also a significant (95%) difference between the overall cluster and field LFs, ΔαJ = -0.34 and ΔM*J = -0.54. All these variations are more pronounced in the SMFs, which we compute by relating the strength of the 4000 Å break in the optical spectra to a stellar mass-to-light ratio.

AB - We investigate the dependence of the galaxy infrared luminosity function (LF) and the associated stellar mass function (SMF) on environment and spectral type using photometry from the Two Micron All Sky Survey and redshifts from the Las Campanas Redshift Survey for galaxies brighter than MJ 7< -19 + 5 log h. In the field environment, the LFs of galaxies with emission lines have much steeper faint-end slopes (αJ = -1.39) than those of galaxies without emission lines (αJ = -0.59). In the cluster environment, however, even the non-emission-line galaxies have a steep faint-end LF (αJ = -1.22). There is also a significant (95%) difference between the overall cluster and field LFs, ΔαJ = -0.34 and ΔM*J = -0.54. All these variations are more pronounced in the SMFs, which we compute by relating the strength of the 4000 Å break in the optical spectra to a stellar mass-to-light ratio.

KW - Galaxies: clusters: general

KW - Galaxies: evolution

KW - Galaxies: luminosity function, mass function

KW - Infrared: galaxies

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DO - 10.1086/321670

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JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 PART 1

ER -

The environmental dependence of the infrared luminosity and stellar mass functions

Abstract

Keywords

ASJC Scopus subject areas

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