Evolution of the galaxy luminosity function at z 0.3

Loveday, Jon (2003) Evolution of the galaxy luminosity function at z 0.3. Monthly Notices of the Royal Astronomical Society, 347 (2). pp. 601-606. ISSN 0035-8711

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Abstract

We measure the redshift-dependent luminosity function and the comoving radial density of galaxies in the Sloan Digital Sky Survey Data Release 1 (SDSS DR1). Both measurements indicate that the apparent number density of bright galaxies increases by a factor3 as redshift increases from z=0 to z=0.3. This result is robust to the assumed cosmology, to the details of the K-correction and to direction on the sky. These observations are most naturally explained by signifcant evolution in the luminosity and/or number density of galaxies at redshifts z<0.3. Such evolution is also consistent with the steep number-magnitude counts seen in the Automatic Plate Measuring (APM) Galaxy Survey, without the need to invoke a local underdensity in the galaxy distribution or magnitude scale errors.

Item Type: Article
Keywords: galaxies: evolution - galaxies: luminosity function, mass function - galaxies: statistics.
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics
Depositing User: Gemma Farrell
Date Deposited: 14 Mar 2008
Last Modified: 13 Mar 2017 12:06
URI: http://sro.sussex.ac.uk/id/eprint/1703
Google Scholar:28 Citations

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