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The Fourth Data Release of the Sloan Digital Sky Survey

Adelman-McCarthy, Jennifer K.; Agüeros, Marcel Andre; Allam, Sahar S.; Anderson, Kurt S. J.; Anderson, Scott F.; Annis, James; Bahcall, Neta A.; Baldry, Ivan K.; Barentine, J. C.; Berlind, Andreas; Bernardi, Mariangela; Blanton, Michael R.; Boroski, William N.; Brewington, Howard J.; Brinchmann, Jarle; Brinkmann, J.; Brunner, Robert J.; Budavári, Tamás; Carey, Larry N.; Carr, Michael A.; Castander, Francisco J.; Connolly, A. J.; Csabai, István; Czarapata, Paul C.; Dalcanton, Julianne J.; Doi, Mamoru; Dong, Feng; Eisenstein, Daniel J.; Evans, Michael L.; Fan, Xiaohui; Finkbeiner, Douglas P.; Friedman, Scott D.; Frieman, Joshua A.; Fukugita, Masataka; Gillespie, Bruce; Glazebrook, Karl; Gray, Jim; Grebel, Eva K.; Gunn, James E.; Gurbani, Vijay K.; de Haas, Ernst; Hall, Patrick B.; Harris, Frederick H.; Harvanek, Michael; Hawley, Suzanne L.; Hayes, Jeffrey; Hendry, John S.; Hennessy, Gregory S.; Hindsley, Robert B.; Hirata, Christopher M.; Hogan, Craig J.; Hogg, David W.; Holmgren, Donald J.; Holtzman, Jon A.; Ichikawa, Shin-ichi; Ivezić, Željko; Jester, Sebastian; Johnston, David E.; Jorgensen, Anders M.; Jurić, Mario; Kent, Stephen M.; Kleinman, S. J.; Knapp, G. R.; Kniazev, Alexei Yu.; Kron, Richard G.; Krzesiński, Jurek; Kuropatkin, Nikolay; Lamb, Donald Q.; Lampeitl, Hubert; Lee, Brian C.; Leger, R. French; Lin, Huan; Long, Daniel C.; Loveday, Jon; Lupton, Robert H.; Margon, Bruce; Martínez-Delgado, David; Mandelbaum, Rachel; Matsubara, Takahiko; McGehee, Peregrine M.; McKay, Timothy A.; Meiksin, Avery; Munn, Jeffrey A.; Nakajima, Reiko; Nash, Thomas; Neilsen, Jr., Eric H.; Newberg, Heidi Jo; Newman, Peter R.; Nichol, Robert C.; Nicinski, Tom; Nieto-Santisteban, Maria; Nitta, Atsuko; O'Mullane, William; Okamura, Sadanori; Owen, Russell; Padmanabhan, Nikhil; Pauls, George; Peoples, Jr., John; Pier, Jeffrey R.; Pope, Adrian C.; Pourbaix, Dimitri; Quinn, Thomas R.; Richards, Gordon T.; Richmond, Michael W.; Rockosi, Constance M.; Schlegel, David J.; Schneider, Donald P.; Schroeder, Joshua; Scranton, Ryan; Seljak, Uroš; Sheldon, Erin; Shimasaku, Kazu; Smith, J. Allyn; Smolčić, Vernesa; Snedden, Stephanie A.; Stoughton, Chris; Strauss, Michael A.; SubbaRao, Mark; Szalay, Alexander S.; Szapudi, István; Szkody, Paula; Tegmark, Max; Thakar, Aniruddha R.; Tucker, Douglas L.; Uomoto, Alan; Vanden Berk, Daniel E.; Vandenberg, Jan; Vogeley, Michael S.; Voges, Wolfgang; Vogt, Nicole P.; Walkowicz, Lucianne M.; Weinberg, David H.; West, Andrew A.; White, Simon D. M.; Xu, Yongzhong; Yanny, Brian; Yocum, D. R.; York, Donald G.; Zehavi, Idit; Zibetti, Stefano; Zucker, Daniel B.

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 deg² and 673,280 spectra of galaxies, quasars, and stars selected from 4783 deg² 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.

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Title
Astrophysical Journal Supplement
DOI
https://doi.org/10.1086/497917

More About This Work

Academic Units
Astronomy
Publisher
IOP Science
Published Here
April 9, 2016