The velocity dispersion function of early-type galaxies

Ravi K. Sheth; Mariangela Bernardi; Paul L. Schechter; Scott Burles; Daniel J. Eisenstein; Douglas P. Finkbeiner; Joshua Frieman; Robert H. Lupton; David J. Schlegel; Mark Subbarao; K. Shimasaku; Neta A. Bahcall; J. Brinkmann; Zeljko Ivezić

doi:10.1086/376794

The velocity dispersion function of early-type galaxies

Ravi K. Sheth
, Mariangela Bernardi
, Paul L. Schechter
, Scott Burles
, Daniel J. Eisenstein
, Douglas P. Finkbeiner
, Joshua Frieman
, Robert H. Lupton
, David J. Schlegel
, Mark Subbarao
, K. Shimasaku
, Neta A. Bahcall
, J. Brinkmann
, Zeljko Ivezić

Astrophysical Sciences

Research output: Contribution to journal › Review article › peer-review

198 Scopus citations

Abstract

The distribution of early-type galaxy velocity dispersions, φ(σ), is measured using a sample drawn from the Sloan Digital Sky Survey database. Its shape differs significantly from that obtained by simply using the mean correlation between luminosity L and velocity dispersion σ to transform the luminosity function into a velocity function: ignoring the scatter around the mean σ-L relation is a bad approximation. An estimate of the contribution from late-type galaxies is also made, which suggests that φ(σ) is dominated by early-type galaxies at velocities larger than ∼200 km s^-1.

Original language	English (US)
Pages (from-to)	225-231
Number of pages	7
Journal	Astrophysical Journal
Volume	594
Issue number	1 I
DOIs	https://doi.org/10.1086/376794
State	Published - Sep 1 2003

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Galaxies: Stellar content
Galaxies: elliptical and lenticular, cD
Galaxies: evolution
Galaxies: fundamental parameters
Galaxies: photometry

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10.1086/376794

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title = "The velocity dispersion function of early-type galaxies",

abstract = "The distribution of early-type galaxy velocity dispersions, φ(σ), is measured using a sample drawn from the Sloan Digital Sky Survey database. Its shape differs significantly from that obtained by simply using the mean correlation between luminosity L and velocity dispersion σ to transform the luminosity function into a velocity function: ignoring the scatter around the mean σ-L relation is a bad approximation. An estimate of the contribution from late-type galaxies is also made, which suggests that φ(σ) is dominated by early-type galaxies at velocities larger than ∼200 km s-1.",

keywords = "Galaxies: Stellar content, Galaxies: elliptical and lenticular, cD, Galaxies: evolution, Galaxies: fundamental parameters, Galaxies: photometry",

author = "Sheth, \{Ravi K.\} and Mariangela Bernardi and Schechter, \{Paul L.\} and Scott Burles and Eisenstein, \{Daniel J.\} and Finkbeiner, \{Douglas P.\} and Joshua Frieman and Lupton, \{Robert H.\} and Schlegel, \{David J.\} and Mark Subbarao and K. Shimasaku and Bahcall, \{Neta A.\} and J. Brinkmann and Zeljko Ivezi{\'c}",

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month = sep,

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doi = "10.1086/376794",

language = "English (US)",

volume = "594",

pages = "225--231",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "1 I",

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TY - JOUR

T1 - The velocity dispersion function of early-type galaxies

AU - Sheth, Ravi K.

AU - Bernardi, Mariangela

AU - Schechter, Paul L.

AU - Burles, Scott

AU - Eisenstein, Daniel J.

AU - Finkbeiner, Douglas P.

AU - Frieman, Joshua

AU - Lupton, Robert H.

AU - Schlegel, David J.

AU - Subbarao, Mark

AU - Shimasaku, K.

AU - Bahcall, Neta A.

AU - Brinkmann, J.

AU - Ivezić, Zeljko

PY - 2003/9/1

Y1 - 2003/9/1

N2 - The distribution of early-type galaxy velocity dispersions, φ(σ), is measured using a sample drawn from the Sloan Digital Sky Survey database. Its shape differs significantly from that obtained by simply using the mean correlation between luminosity L and velocity dispersion σ to transform the luminosity function into a velocity function: ignoring the scatter around the mean σ-L relation is a bad approximation. An estimate of the contribution from late-type galaxies is also made, which suggests that φ(σ) is dominated by early-type galaxies at velocities larger than ∼200 km s-1.

AB - The distribution of early-type galaxy velocity dispersions, φ(σ), is measured using a sample drawn from the Sloan Digital Sky Survey database. Its shape differs significantly from that obtained by simply using the mean correlation between luminosity L and velocity dispersion σ to transform the luminosity function into a velocity function: ignoring the scatter around the mean σ-L relation is a bad approximation. An estimate of the contribution from late-type galaxies is also made, which suggests that φ(σ) is dominated by early-type galaxies at velocities larger than ∼200 km s-1.

KW - Galaxies: Stellar content

KW - Galaxies: elliptical and lenticular, cD

KW - Galaxies: evolution

KW - Galaxies: fundamental parameters

KW - Galaxies: photometry

UR - https://www.scopus.com/pages/publications/19244369008

UR - https://www.scopus.com/pages/publications/19244369008#tab=citedBy

U2 - 10.1086/376794

DO - 10.1086/376794

M3 - Review article

AN - SCOPUS:19244369008

SN - 0004-637X

VL - 594

SP - 225

EP - 231

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 I

ER -

The velocity dispersion function of early-type galaxies

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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