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SEGUE : a spectroscopic survey of 240,000 stars with g=14-20
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(2009) SEGUE : a spectroscopic survey of 240,000 stars with g=14-20. The Astrophysical Journal, Vol.137 (No.5). pp. 4377-4399. doi:10.1088/0004-6256/137/5/4377
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Official URL: http://dx.doi.org/10.1088/0004-6256/137/5/4377
Abstract
The Sloan Extension for Galactic Understanding and Exploration (SEGUE) Survey obtained approximate to 240,000 moderate-resolution (R similar to 1800) spectra from 3900 angstrom to 9000 angstrom 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 sigma(RV) similar to 4 km s(-1) at g < 18, degrading to s(RV) similar to 15 km s(-1) at g similar to 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 (sigma(g, r, i) similar to 2%), (sigma(u, z) similar to 3%) and astrometry (approximate to 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.
| Item Type: | Journal Item | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Galaxies, Cosmic abundances, Stars | ||||
| Journal or Publication Title: | The Astrophysical Journal | ||||
| Publisher: | Institute of Physics Publishing, Inc. | ||||
| ISSN: | 0004-637X | ||||
| Official Date: | May 2009 | ||||
| Dates: |
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| Volume: | Vol.137 | ||||
| Number: | No.5 | ||||
| Number of Pages: | 23 | ||||
| Page Range: | pp. 4377-4399 | ||||
| DOI: | 10.1088/0004-6256/137/5/4377 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | United States. National Aeronautics and Space Administration (NASA), National Science Foundation (U.S.) (NSF), Research Training Networks (RTN), Joint Institute for Nuclear Astrophysics (JINA) | ||||
| Grant number: | NAG 5-13057 (NASA), NAG 5-13147 (NASA), PHY 02-16783 (JINA/NSF), ELSA MRTN-CT-2006-033481 (RTN) |
Data sourced from Thomson Reuters' Web of Knowledge
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