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SEGUE: A Spectroscopic Survey of 240,000 Stars with g = 14-20

Yanny, Brian and McGehee, Peregrine (2009) SEGUE: A Spectroscopic Survey of 240,000 Stars with g = 14-20. Astronomical Journal, 137 (5). pp. 4377-4399. ISSN 0004-6256.

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The Sloan Extension for Galactic Understanding and Exploration (SEGUE) Survey obtained ≈240,000 moderateresolution (R ~ 1800) spectra from 3900 Å to 9000 Å of fainter Milky Way stars (14.0 < g < 20.3) of a wide variety of spectral types, both main-sequence and evolved objects, with the goal of studying the kinematics and populations of our Galaxy and its halo. The spectra are clustered in 212 regions spaced over three quarters of the sky. Radial velocity accuracies for stars are σ(RV) ~ 4 km s^(−1) at g < 18, degrading to σ(RV) ~ 15 km s^(−1) at g ~ 20. For stars with signal-to-noise ratio >10 per resolution element, stellar atmospheric parameters are estimated, including metallicity, surface gravity, and effective temperature. SEGUE obtained 3500 deg^2 of additional ugriz imaging (primarily at low Galactic latitudes) providing precise multicolor photometry (σ(g, r, i) ~ 2%), (σ(u, z) ~ 3%) and astrometry (≈0".1) for spectroscopic target selection. The stellar spectra, imaging data, and derived parameter catalogs for this survey are publicly available as part of Sloan Digital Sky Survey Data Release 7.

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Additional Information:© 2009 The American Astronomical Society. Received 2008 September 29; accepted 2009 February 8; published 2009 April 7. Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England. The SDSS Web site is The SDSS is managed by the Astrophysical Research Consortium for the Participating Institutions. The Participating Institutions are the American Museum of Natural History, Astrophysical Institute Potsdam, University of Basel, Cambridge University, Case Western Reserve University, University of Chicago, Drexel University, Fermilab, the Institute for Advanced Study, the Japan Participation Group, Johns Hopkins University, the Joint Institute for Nuclear Astrophysics, the Kavli Institute for Particle Astrophysics and Cosmology, the Korean Scientist Group, the Chinese Academy of Sciences (LAMOST), Los Alamos National Laboratory, the Max-Planck-Institute for Astronomy (MPIA), the Max-Planck-Institute for Astrophysics (MPA), New Mexico State University, Ohio State University, University of Pittsburgh, University of Portsmouth, Princeton University, the United States Naval Observatory, and the University of Washington. C. Allende Prieto acknowledges support from NASA grants NAG 5-13057 and NAG 5-13147. T. C. Beers, Y. S. Lee, and S. Thirupathi acknowledge partial funding of this work from grant PHY 02-16783: Physics Frontiers Center/Joint Institute for Nuclear Astrophysics (JINA), awarded by the U.S. National Science Foundation. P. Re Fiorentin acknowledges support through the Marie Curie Research Training Network ELSA MRTN-CT-2006-033481. We acknowledge useful discussions with Steve Majewski on the G dwarf target-selection design. We acknowledge several useful suggestions from the referee.
Funding AgencyGrant Number
NASANAG 5-13057
NASANAG 5-13147
NSF Physics Frontiers Center/Joint Institute for Nuclear Astrophysics (JINA)PHY 02-16783
Marie Curie Research Training Network - European Leadership in Space Astrometry (ELSA) MRTN-CT-2006-033481
Alfred P. Sloan FoundationUNSPECIFIED
U.S. Department of EnergyUNSPECIFIED
Japanese MonbukagakushoUNSPECIFIED
Max Planck SocietyUNSPECIFIED
Higher Education Funding Council for EnglandUNSPECIFIED
Subject Keywords:Galaxy: halo – Galaxy: stellar content – Galaxy: structure – stars: abundances – stars: fundamental parameters – stars: general
Classification Code:PACS: 98.35.Ac; 95.80.+p; 98.35.Df; 95.75.Fg; 98.35.Gi; 98.35.Ln
Record Number:CaltechAUTHORS:20100629-111735552
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Official Citation: Brian Yanny et al 2009 The Astronomical Journal 137 4377 doi: 10.1088/0004-6256/137/5/4377
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:18853
Deposited By: Tony Diaz
Deposited On:02 Jul 2010 03:55
Last Modified:26 Dec 2012 12:11

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