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The 2dF Galaxy Redshift Survey: spectral types and luminosity functions

Folkes, Simon and Ronen, Shai and Price, Ian and Lahav, Ofer and Colless, Matthew and Maddox, Steve and Deeley, Kathryn and Glazebrook, Karl and Bland-Hawthorn, Joss and Cannon, Russell and Cole, Shaun and Collins, Chris and Couch, Warrick and Driver, Simon P. and Dalton, Gavin and Efstathiou, George and Ellis, Richard S. and Frenk, Carlos S. and Kaiser, Nick and Lewis, Ian and Lumsden, Stuart and Peacock, John and Peterson, Bruce A. and Sutherland, Will and Taylor, Keith (1999) The 2dF Galaxy Redshift Survey: spectral types and luminosity functions. Monthly Notices of the Royal Astronomical Society, 308 (2). pp. 459-472. ISSN 0035-8711. doi:10.1046/j.1365-8711.1999.02721.x.

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We describe the 2dF Galaxy Redshift Survey (2dFGRS) and the current status of the observations. In this exploratory paper, we apply a principal component analysis to a preliminary sample of 5869 galaxy spectra and use the two most significant components to split the sample into five spectral classes. These classes are defined by considering visual classifications of a subset of the 2dF spectra, and also by comparison with high-quality spectra of local galaxies. We calculate a luminosity function for each of the different classes and find that later-type galaxies have a fainter characteristic magnitude, and a steeper faint-end slope. For the whole sample we find M*=−19.7 (for Ω=1, H₀=100 km s⁻¹ Mpc⁻¹), α=−1.3, φ*=0.017. For class 1 (‘early-type’) we find M*=−19.6, α=−0.7, while for class 5 (‘late-type’) we find M*=−19.0, α=−1.7. The derived 2dF luminosity functions agree well with other recent luminosity function estimates.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Colless, Matthew0000-0001-9552-8075
Bland-Hawthorn, Joss0000-0001-7516-4016
Ellis, Richard S.0000-0001-7782-7071
Kaiser, Nick0000-0001-6511-4306
Additional Information:© 1999 RAS. Accepted 1999 April 7. Received 1999 April 7; in original form 1999 January 25. We thank the Anglo-Australian Observatory for the support in this project.
Funding AgencyGrant Number
Anglo-Australian ObservatoryUNSPECIFIED
Subject Keywords:galaxies: distances and redshifts, galaxies: elliptical and lenticular, cD, galaxies: evolution, galaxies: formation, galaxies: stellar content
Issue or Number:2
Record Number:CaltechAUTHORS:20200629-094518760
Persistent URL:
Official Citation:Simon Folkes, Shai Ronen, Ian Price, Ofer Lahav, Matthew Colless, Steve Maddox, Kathryn Deeley, Karl Glazebrook, Joss Bland-Hawthorn, Russell Cannon, Shaun Cole, Chris Collins, Warrick Couch, Simon P. Driver, Gavin Dalton, George Efstathiou, Richard S. Ellis, Carlos S. Frenk, Nick Kaiser, Ian Lewis, Stuart Lumsden, John Peacock, Bruce A. Peterson, Will Sutherland, Keith Taylor, The 2dF Galaxy Redshift Survey: spectral types and luminosity functions, Monthly Notices of the Royal Astronomical Society, Volume 308, Issue 2, September 1999, Pages 459–472,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104120
Deposited By: Rebecca Minjarez
Deposited On:01 Jul 2020 19:14
Last Modified:16 Nov 2021 18:28

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