Cited by 5,341Galaxies: Formation, Evolution, PhenomenaAstronomy and Astrophysical ResearchStellar, planetary, and galactic studies

THE SEVENTH DATA RELEASE OF THE SLOAN DIGITAL SKY SURVEY

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Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Prieto, Carlos Allende, An, Deokkeun, Anderson, Kurt S. J., Anderson, Scott F. +196 more·2009·The Astrophysical Journal Supplement Series

Abstract

This paper describes the Seventh Data Release of the Sloan Digital Sky Survey (SDSS), marking the completion of the original goals of the SDSS and the end of the phase known as SDSS-II. It includes 11,663 deg 2 of imaging data, with most of the ∼2000 deg 2 increment over the previous data release lying in regions of low Galactic latitude. The catalog contains five-band photometry for 357 million distinct objects. The survey also includes repeat photometry on a 120° long, 2 5 wide stripe along the celestial equator in the Southern Galactic Cap, with some regions covered by as many as 90 individual imaging runs. We include a co-addition of the best of these data, going roughly 2 mag fainter than the main survey over 250 deg 2 . The survey has completed spectroscopy over 9380 deg 2 ; the spectroscopy is now complete over a large contiguous area of the Northern Galactic Cap, closing the gap that was present in previous data releases. There are over 1.6 million spectra in total, including 930,000 galaxies, 120,000 quasars, and 460,000 stars. The data release includes improved stellar photometry at low Galactic latitude. The astrometry has all been recalibrated with the second version of the USNO CCD Astrograph Catalog, reducing the rms statistical errors at the bright end to 45 milliarcseconds per coordinate. We further quantify a systematic error in bright galaxy photometry due to poor sky determination; this problem is less severe than previously reported for the majority of galaxies. Finally, we describe a series of improvements to the spectroscopic reductions, including better flat fielding and improved wavelength calibration at the blue end, better processing of objects with extremely strong narrow emission lines, and an improved determination of stellar metallicities.

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  1. [20]20. Cunha, C. E., Lima, M., Oyaizu, H., Frieman, J., & Lin, H. 2008, arXiv:0810.2991 · arXiv
  2. [71]71. Yanny, B., et al. 2009, arXiv:0902.1781 · arXiv

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Abazajian, K. N., Adelman-McCarthy, J. K., Agüeros, M. A., Allam, S. S., Prieto, C. A., An, D., Anderson, K. S. J., Anderson, S. F., Annis, J., Bahcall, N. A., Bailer-Jones, C. A. L., Barentine, J. C., Bassett, B. A., Becker, A. C., Beers, T. C., Bell, E. F., Belokurov, V., Berlind, A. A., Berman, E. F., Bernardi, M., Bickerton, S. J., Bizyaev, D., Blakeslee, J. P., Blanton, M. R., Bochanski, J. J., Boroski, W. N., Brewington, H. J., Brinchmann, J., Brinkmann, J., Brunner, R. J., Budavári, T., Carey, L. N., Carliles, S., Carr, M. A., Castander, F. J., Cinabro, D., Connolly, A. J., Csabai, I., Cunha, C. E., Czarapata, P. C., Davenport, J. R. A., de Haas, E., Dilday, B., Doi, M., Eisenstein, D. J., Evans, M. L., Evans, N. W., Fan, X., Friedman, S. D., Frieman, J. A., Fukugita, M., Gänsicke, B. T., Gates, E., Gillespie, B., Gilmore, G., Gonzalez, B., Gonzalez, C. F., Grebel, E. K., Gunn, J. E., Györy, Z., Hall, P. B., Harding, P., Harris, F. H., Harvanek, M., Hawley, S. L., Hayes, J. J. E., Heckman, T. M., Hendry, J. S., Hennessy, G. S., Hindsley, R. B., Hoblitt, J., Hogan, C. J., Hogg, D. W., Holtzman, J. A., Hyde, J. B., Ichikawa, S.-I., Ichikawa, T., Im, M., Ivezić, Ž., Jester, S., Jiang, L., Johnson, J. A., Jorgensen, A. M., Jurić, M., Kent, S. M., Kessler, R., Kleinman, S. J., Knapp, G. R., Konishi, K., Kron, R. G., Krzesinski, J., Kuropatkin, N., Lampeitl, H., Lebedeva, S., Lee, M. G., Lee, Y. S., Leger, R. F., Lépine, S., Li, N., Lima, M., Lin, H., Long, D. C., Loomis, C. P., Loveday, J., Lupton, R. H., Magnier, E., Malanushenko, O., Malanushenko, V., Mandelbaum, R., Margon, B., Marriner, J. P., Martínez-Delgado, D., Matsubara, T., McGehee, P. M., McKay, T. A., Meiksin, A., Morrison, H. L., Mullally, F., Munn, J. A., Murphy, T., Nash, T., Nebot, A., Neilsen, E. H., Newberg, H. J., Newman, P. R., Nichol, R. C., Nicinski, T., Nieto-Santisteban, M., Nitta, A., Okamura, S., Oravetz, D. J., Ostriker, J. P., Owen, R., Padmanabhan, N., Pan, K., Park, C., Pauls, G., Peoples, J., Percival, W. J., Pier, J. R., Pope, A. C., Pourbaix, D., Price, P. A., Purger, N., Quinn, T., Raddick, M. J., Fiorentin, P. R., Richards, G. T., Richmond, M. W., Riess, A. G., Rix, H.-W., Rockosi, C. M., Sako, M., Schlegel, D. J., Schneider, D. P., Scholz, R.-D., Schreiber, M. R., Schwope, A. D., Seljak, U., Sesar, B., Sheldon, E., Shimasaku, K., Sibley, V. C., Simmons, A. E., Sivarani, T., Smith, J. A., Smith, M. C., Smolčić, V., Snedden, S. A., Stebbins, A., Steinmetz, M., Stoughton, C., Strauss, M. A., SubbaRao, M., Suto, Y., Szalay, A. S., Szapudi, I., Szkody, P., Tanaka, M., Tegmark, M., Teodoro, L. F. A., Thakar, A. R., Tremonti, C. A., Tucker, D. L., Uomoto, A., Vanden Berk, D. E., Vandenberg, J., Vidrih, S., Vogeley, M. S., Voges, W., Vogt, N. P., Wadadekar, Y., Watters, S., Weinberg, D. H., West, A. A., White, S. D. M., Wilhite, B. C., Wonders, A. C., Yanny, B., Yocum, D. R., York, D. G., Zehavi, I., Zibetti, S., & Zucker, D. B.
Affiliations
  • University of Maryland, College Park (US)
  • Fermi National Accelerator Laboratory (US)
  • Columbia University (US)
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  • University College London (GB)
  • California Institute of Technology (US)
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  • McDonald Observatory (US)
  • University of Cape Town (ZA)
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  • Max Planck Institute for Astronomy (DE)
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  • University of Pennsylvania (US)
  • Herzberg Institute of Astrophysics (CA)
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  • Institute of Space Sciences (ES)
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  • Tohoku University (JP)
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  • Max Planck Institute for Astrophysics (DE)
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ORCID
Venue
The Astrophysical Journal Supplement Series
Published
2009-05-18
Volume
182
Issue
2
Pages
543-558
ISSN
  • 0067-0049 (ISSN-L)
  • 1538-4365
OpenAlex
W2124199755
Cited by
5,341
References
78
Citations by year
2026: 140 · 2025: 210 · 2024: 227 · 2023: 184 · 2022: 201 · 2021: 214 · 2020: 256 · 2019: 263 · 2018: 302 · 2017: 306 · 2016: 427 · 2015: 410 · 2014: 400 · 2013: 457 · 2012: 461
FWCI
225.66
Type
journal article
Language
en
Open access
Locations
  • The Astrophysical Journal Supplement Series (publishedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (acceptedVersion, other-oa)
  • arXiv (Cornell University) (submittedVersion)
  • Sussex Research Online (University of Sussex) (submittedVersion)
  • CaltechAUTHORS (California Institute of Technology) (submittedVersion)
  • Dépôt institutionnel de l'Université libre de Bruxelles (Université Libre de Bruxelles) (submittedVersion)
  • Max Planck Institute for Plasma Physics (submittedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • Max Planck Digital Library (submittedVersion)
  • Figshare (submittedVersion)
  • Open University of Cape Town (University of Cape Town) (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
  • Texas ScholarWorks (Texas Digital Library) (submittedVersion, other-oa)
  • Seoul National University Open Repository (Seoul National University) (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion, other-oa)
  • arXiv (Cornell University)
  • Texas Digital Library (University of Texas)
  • Zurich Open Repository and Archive (University of Zurich)
  • Columbia Academic Commons (Columbia University)
Funders
  • Science and Technology Facilities Council (ST/G001979/1, ST/H00131X/1, ST/F002599/1, PP/E001033/1, PP/E001068/1, ST/H008578/1, PP/E00105X/1, ST/F002858/1, ST/F002335/1)
  • Japan Society for the Promotion of Science (21244012, 20540255, 21540263)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
  • Physical Sciences › Physics and Astronomy › Instrumentation › Astronomy and Astrophysical Research
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
Keywords
Sloan Digital Sky Survey, multi-band photometry, stellar photometry, astrometry, galaxy photometry, quasars, stellar spectra, stellar metallicity, wavelength calibration, narrow emission lines

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