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Cited by 566Stellar, planetary, and galactic studiesGalaxies: Formation, Evolution, PhenomenaAstronomy and Astrophysical Research

The Milky Way Tomography with SDSS. II. Stellar Metallicity

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Ivezić, Željko, Sesar, Branimir, Jurić, Mario, Bond, Nicholas, Dalcanton, Julianne, Rockosi, Constance M., Yanny, Brian, Newberg, Heidi J. +45 more·2008·The Astrophysical Journal
DOI 10.1086/589678
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Abstract

Using effective temperature and metallicity derived from SDSS spectra for ~60,000 F- and G-type main-sequence stars (0.2 < g − r < 0.6), we develop polynomial models for estimating these parameters from the SDSS u − g and g − r colors. These photometric estimates have similar error properties as those determined from SDSS spectra. We apply this method to SDSS photometric data for over 2 million F/G stars and measure the unbiased metallicity distribution for a complete volume-limited sample of stars at distances between 500 pc and 8 kpc. The metallicity distribution can be exquisitely modeled using two components with a spatially varying number ratio, which correspond to disk and halo. The two components also possess the kinematics expected for disk and halo stars. The metallicity of the halo component is spatially invariant, while the median disk metallicity smoothly decreases with distance from the Galactic plane from –0.6 at 500 pc to –0.8 beyond several kiloparsecs. The absence of a correlation between metallicity and kinematics for disk stars is in a conflict with the traditional decomposition in terms of thin and thick disks. We detect coherent substructures in the kinematics-metallicity space, such as the Monoceros stream, which rotates faster than the LSR, and has a median metallicity of [Fe/H] = −0.95, with an rms scatter of only ~0.15 dex. We extrapolate our results to the performance expected from the Large Synoptic Survey Telescope (LSST) and estimate that LSST will obtain metallicity measurements accurate to 0.2 dex or better, with proper-motion measurements accurate to ~0.5 mas yr −1 , for about 200 million F/G dwarf stars within a distance limit of ~100 kpc ( g < 23.5).

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  • LSST will provide photometric metallicity measurements for about 200 million main-sequence F/G stars, sampling the halo to 100 kpc over roughly 20,000 deg2.

    “Photometric metallicity measurements ( see Figures 28 and 29 ) will be available for about 200 million main-sequence F / G stars, which will sample the halo to distances of 100 kpc ( Ivezi ć et al. 2008; An et al. 2013 ) over a solid angle of roughly 20,000 deg 2 .”

    From LSST: From Science Drivers to Reference Design and Anticipated Data Products (2019) · cites this paper as Ivezić et al. 2008

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Research works printed but not linked: 9

  1. ---. 2007, AJ, submitted (arXiv:0710.5780) · arXiv
  2. Bell, E. F., et al. 2007, ApJ, submitted (arXiv:0706.0004) · arXiv
  3. ---. 2005, in ASP Conf. Ser. 338, Astrometry in the Age of the Next Gen- eration of Large Telescopes, ed. P. K. Seidelmann & A. K. B. Monet (San Francisco: ASP), 201
  4. ---. 2007b, in ASP Conf. Ser. 364, The Future of Photometric, Spectro- photometric and Polarimetric Standardization, ed. C. Sterken (San Francisco: ASP), 165
  5. Kaiser, N., et al. 2002, Proc. SPIE, 4836, 154
  6. Lee, Y. S., et al. 2007a, AJ, submitted (arXiv:0710.5645) · arXiv
  7. ---. 2007b, AJ, submitted (arXiv:0710.5778) · arXiv
  8. Lupton, R. H., Ivezic ´, Z ˇ., Gunn, J. E., Knapp, G. R., Strauss, M. A., & Yasuda, N. 2002, Proc. SPIE, 4836, 350
  9. Tyson, J. A. 2002, Proc. SPIE, 4836, 10

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Authors
Ivezić, Ž., Sesar, B., Jurić, M., Bond, N., Dalcanton, J., Rockosi, C. M., Yanny, B., Newberg, H. J., Beers, T. C., Allende Prieto, C., Wilhelm, R., Lee, Y. S., Sivarani, T., Norris, J. E., Bailer‐Jones, C. A. L., Re Fiorentin, P., Schlegel, D., Uomoto, A., Lupton, R. H., Knapp, G. R., Gunn, J. E., Covey, K. R., Smith, J. A., Miknaitis, G., Doi, M., Tanaka, M., Fukugita, M., Kent, S., Finkbeiner, D., Munn, J. A., Pier, J. R., Quinn, T., Hawley, S., Anderson, S., Kiuchi, F., Chen, A., Bushong, J., Sohi, H., Haggard, D., Kimball, A., Barentine, J., Brewington, H., Harvanek, M., Kleinman, S., Krzesinski, J., Long, D., Nitta, A., Snedden, S., Lee, B., Harris, H., Brinkmann, J., Schneider, D. P., & York, D. G.
Affiliations
  • University of Washington (US)
  • Institute for Advanced Study (US)
  • Princeton University (US)
  • University of California, Santa Cruz (US)
  • Fermi National Accelerator Laboratory (US)
  • Rensselaer Polytechnic Institute (US)
  • Joint Institute for Nuclear Astrophysics (US)
  • Australian National University (AU)
  • Max Planck Society (DE)
  • Lawrence Berkeley National Laboratory (US)
  • Johns Hopkins University (US)
  • Center for Astrophysics Harvard & Smithsonian (US)
  • Austin Peay State University (US)
  • The University of Tokyo (JP)
  • Institute for Cosmic Ray Research (JP)
  • United States Naval Observatory (US)
  • Pennsylvania State University (US)
  • University of Chicago (US)
ORCID
Venue
The Astrophysical Journal
Publisher
American Astronomical Society
Published
2008-09
Volume
684
Issue
1
Pages
287-325
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
DOI
10.1086/589678
OpenAlex
W2161558319
Cited by
566
References
144
Citations by year
2026: 14 · 2025: 14 · 2024: 11 · 2023: 4 · 2022: 16 · 2021: 27 · 2020: 20 · 2019: 27 · 2018: 32 · 2017: 32 · 2016: 34 · 2015: 40 · 2014: 41 · 2013: 36 · 2012: 61
FWCI
30.52
Type
journal article
Language
en
Open access
Locations
  • The Astrophysical Journal (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
  • Max Planck Institute for Plasma Physics (submittedVersion)
  • ANU Open Research (Australian National University) (submittedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
  • Texas ScholarWorks (Texas Digital Library) (submittedVersion, other-oa)
  • arXiv (Cornell University)
  • Texas Digital Library (University of Texas)
Funders
  • National Science Foundation (0216783, 0503584, CAREER)
  • U.S. Department of Energy
  • National Aeronautics and Space Administration (NAG513057, 13057)
  • Alfred P. Sloan Foundation
  • Princeton University
  • Ohio State University
  • University of Washington
  • Johns Hopkins University
  • University of Pittsburgh
  • Case Western Reserve University
  • Drexel University
  • Universität Basel
  • University of Portsmouth
  • New Mexico State University
  • Chinese Academy of Sciences
  • Max-Planck-Gesellschaft
  • Max-Planck-Institut für Astronomie
  • Japan Society for the Promotion of Science (20540255)
  • U.S. Naval Observatory
  • Fermilab
  • Los Alamos National Laboratory
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
  • Physical Sciences › Physics and Astronomy › Instrumentation › Astronomy and Astrophysical Research
Keywords
effective temperature estimation, disk kinematics, volume-limited sample, LSST, proper motions, stellar substructures

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