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III/257 ==OBSOLETE version of Catalogue==
27-Jun-2011: See III/257
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=III/257
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Beginning of ReadMe :III/257 RAVE second data release (Zwitter+, 2008)
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The Radial Velocity Experiment (RAVE): second data release.
Zwitter T., Siebert A., Munari U., Freeman K.C., Siviero A., Watson F.G.,
Fulbright J.P., Wyse R.F.G., Campbell R., Seabroke G.M., Williams M.,
Steinmetz M., Bienayme O., Gilmore G., Grebel E.K., Helmi A., Navarro J.F.,
Anguiano B., Boeche C., Burton D., Cass P., Dawe J., Fiegert K., Hartley M.,
Russell K., Veltz L., Bailin J., Binney J., Bland-Hawthorn J., Brown A.,
Dehnen W., Evans N.W., Fiorentin P.R., Fiorucci M., Gerhard O., Gibson B.,
Kelz A., Kujken K., Matijevic G., Minchev I., Parker Q.A., Penarrubia J.,
Quillen A., Read M.A., Reid W., Roeser S., Ruchti G., Scholz R.-D.,
Smith M.C., Sordo R., Tolstoi E., Tomasella L., Vidrih S., de Boer E.W.
<Astron. J. 136, 421 (2008)>
=2008AJ....136..421Z
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ADC_Keywords: Surveys ; Radial velocities; Milky Way; Stars, fundamental ;
Photometry
Keywords: catalogs - surveys - stars: fundamental parameters
Abstract:
We present the second data release of the Radial Velocity Experiment
(RAVE), an ambitious spectroscopic survey to measure radial velocities
and stellar atmosphere parameters (temperature, metallicity, surface
gravity, and rotational velocity) of up to one million stars using
the 6dF multi-object spectrograph on the 1.2m UK Schmidt Telescope
of the Anglo-Australian Observatory (AAO). The RAVE program started
in 2003, obtaining medium resolution spectra (median R=7500) in the
Ca-triplet region (8410-8795AA) for southern hemisphere stars drawn
from the Tycho-2 and SuperCOSMOS catalogues, in the magnitude range
9<I<12. Following the first data release, the current release doubles
the sample of published radial velocities, now containing 51829
radial velocities for 49327 individual stars observed on 141 nights
between 2003 April 11 and 2005 March 31. Comparison with external data
sets shows that the new data collected since 2004 April 3 show a
standard deviation of 1.3km/s, about twice as good as for the first
data release. For the first time, this data release contains values
of stellar parameters from 22407 spectra of 21121 individual stars.
They were derived by a penalized chi-square method using an extensive
grid of synthetic spectra calculated from the latest version of Kurucz
stellar atmosphere models. From comparison with external data sets,
our conservative estimates of errors of the stellar parameters for a
spectrum with an average signal-to-noise ratio (S/N) of 40 are 400K
in temperature, 0.5dex in gravity, and 0.2dex in metallicity. We
note however that, for all three stellar parameters, the internal
errors estimated from repeat RAVE observations of 855 stars are at
least a factor 2 smaller. We demonstrate that the results show no
systematic offsets if compared to values derived from photometry or
complementary spectroscopic analyses. The data release includes proper
motions from Starnet2, Tycho-2, and UCAC2 catalogs and photometric
measurements from Tycho-2 USNO-B, DENIS, and 2MASS. The data release
can be accessed via the RAVE Web site: http://www.rave-survey.org and
through CDS.
Description:
Spectroscopic radial velocities for 49327 stars in the Milky-Way
southern hemisphere using the 6dF instrument at the AAO. Stellar
parameters are published for a set of 21121 stars belonging to
the second year of observation.