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The fourth data release of the Sloan Digital Sky Survey

par Adelman-McCarthy, Jennifer K.;Pourbaix, Dimitri
Référence The Astrophysical journal. Supplement series, 162, 1, page (38-48)
Publication Publié, 2006

Article révisé par les pairs

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Résumé :

This paper describes the Fourth Data Release of the Sloan Digital Sky Survey (SDSS), including all survey-quality data taken through 2004 June. The data release includes five-band photometric data for 180 million objects selected over 6670 deg 2 and 673,280 spectra of galaxies, quasars, and stars selected from 4783 deg 2 of those imaging data using the standard SDSS target selection algorithms. These numbers represent a roughly 27% increment over those of the Third Data Release; all the data from previous data releases are included in the present release. The Fourth Data Release also includes an additional 131,840 spectra of objects selected using a variety of alternative algorithms, to address scientific issues ranging from the kinematics of stars in the Milky Way thick disk to populations of faint galaxies and quasars. © 2006. The American Astronomical Society. All rights reserved.