Bibcode
Lee, Young S.; Beers, T. C.; Thirupathi, S.; Wilhelm, R.; Allende Prieto, C.; Norris, J. E.; Fiorentin, P. R.; Bailer-Jones, C. A.; SEGUE Calibration Team
Referencia bibliográfica
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #168.15; Bulletin of the American Astronomical Society, Vol. 38, p.1140
Fecha de publicación:
12
2006
Número de citas
1
Número de citas referidas
1
Descripción
The Sloan Extension for Galactic Understanding and Exploration (SEGUE)
is one of three key projects in SDSS-II. SEGUE is in the process of
obtaining ugriz imaging of some 3500 square degrees of sky outside of
the SDSS-I footprint, with special attention being given to scans of
lower galactic latitudes in order to better probe the disk/halo
interface in the Galaxy. Over one-third of the imaging has already been
completed. SEGUE is also obtaining R = 2000 sectroscopy over the
wavelenth range 380 900 nm for 250,000 stars in 200 selected areas over
the sky available from Apache Point, New Mexico. The spectroscopic
candidates are selected on the basis of ugriz photometry to populate
some 16 target categories of stars chosen to explore the nature of the
stellar populations in the Galaxy as a function of distance from the Sun
(from 0.5 kpc to over 100 kpc).
The SEGUE data clearly require automated analysis tools in order to
extract the maximum amount of useful information. In this contribution
we describe the development and execution of the SEGUE spectroscopic
analysis pipeline, which makes use of multiple approaches (including
spectral matching, neural network analysis, line index calculations,
etc.) in order to estimate the fundamental stellar atmospheric
parameters (effective temperature, surface gravity, and [Fe/H]). These
approaches are in the process of being extended to include
determinations of other elemental abundances (e.g., C, Na, Mg) that the
SDSS spectra probe.
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 http://www.sdss.org/.