III/257 RAVE second data release (Zwitter+, 2008)
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 2008AJ....136..421Z
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 (8410-8795Å) 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.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
ravedr2.dat 476 51829 RAVE catalog with position, radial velocities,
atmospheric parameters and photometry
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See also:
I/284 : The USNO-B1.0 Catalog (Monet+ 2003)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
B/denis : The DENIS database (DENIS Consortium, 2005)
J/A+A/522/A54 : Distance determination for RAVE stars. II. (Zwitter+, 2010)
Byte-by-byte Description of file: ravedr2.dat
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Bytes Format Units Label Explanations
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1- 16 A16 --- Name Target designation
18- 33 A16 --- AltName Target altername designation
35- 46 F12.8 deg RAdeg Right ascension in decimal degrees (J2000.0)
48- 59 F12.8 deg DEdeg Declination in decimal degrees (J2000.0)
61- 69 F9.5 deg GLON Galactic longitude
71- 79 F9.5 deg GLAT Galactic latitude
81- 87 F7.1 km/s HRV Heliocentric radial velocity
89- 94 F6.1 km/s e_HRV HRV error
96-101 F6.1 mas/yr pmRA ?=9999.9 Proper motion RA
103-108 F6.1 mas/yr e_pmRA ?=9999.9 Error proper motion RA
110-115 F6.1 mas/yr pmDE ?=9999.9 Proper motion DE
117-122 F6.1 mas/yr e_pmDE ?=9999.9 Error proper motion DE
124 I1 --- r_pmDE ?=9 Source of proper motion (1)
126-130 F5.2 mag Imag Input catalog I magnitude
132-139 A8 "YYYYMMDD" ObsDate Date of observation
141-150 A10 --- Field Name of RAVE field
152 I1 --- Plate [1/2] Plate number used
154-156 I3 --- Fiber [1/150] Fiber number
158-162 I5 K Teff ?=0 Effective Temperature
164-167 F4.2 --- logg ?=9.99 Gravity
169-173 F5.2 --- [M/H] ?=99.99 Uncalibrated [M/H]
175-178 F4.2 --- [alf/Fe] ?=9.99 alpha enhancement [α/Fe]
180-184 F5.2 [Sun] [M/H]c ?=99.99 Calibrated [M/H]
186-193 F8.1 --- Chi2 ?=0 chi square
195-199 F5.1 --- S2N ?=0 Corrected signal to noise
201-205 F5.1 --- R Tonry-Davis correlation coefficient
207-210 F4.2 --- hcp Height of correlation peak
212-217 F6.1 km/s wcp Width of correlation peak
219-224 F6.1 km/s cRV Zero point correction applied
226-231 F6.1 km/s HRVsky Measured heliocentric radial velocity of sky
233-238 F6.1 km/s e_HRVsky Error HRV of sky
240-244 F5.1 --- Rsky Sky Tonry-Davis correlation coefficient
246-250 F5.1 --- S/N ?=-10 Spectra signal to noise ratio
252-257 F6.3 mag BTmag ?=99.999 Tycho-2 BT magnitude
259-264 F6.3 mag e_BTmag ?=99.999 Error on BTmag
266-271 F6.3 mag VTmag ?=99.999 Tycho-2 VT magnitude
273-278 F6.3 mag e_VTmag ?=99.999 Error on VTmag
280-293 A14 --- USNO-B USNO-B designation
295-300 F6.3 mas DistU ?=99.999 Distance to USNO-B source
302-306 F5.2 mag B1mag ?=99.99 USNO-B B1 magnitude
308-312 F5.2 mag R1mag ?=99.99 USNO-B R1 magnitude
314-318 F5.2 mag B2mag ?=99.99 USNO-B B2 magnitude
320-324 F5.2 mag R2mag ?=99.99 USNO-B R2 magnitude
326-330 F5.2 mag ImagU ?=99.99 USNO-B I magnitude
332 A1 --- XU [ABCDX] USNO cross-identification flag (2)
334-349 A16 --- DENIS DENIS designation
351-356 F6.3 mas DistD ?=99.999 Distance to DENIS source
358-363 F6.3 mag ImagD ?=99.999 DENIS I magnitude
365-368 F4.2 mag e_ImagD ?=9.99 Error on DENIS I magnitude
370-375 F6.3 mag JmagD ?=99.999 DENIS J magnitude
377-380 F4.2 mag e_JmagD ?=9.99 Error on DENIS J magnitude
382-387 F6.3 mag KmagD ?=99.999 DENIS K magnitude
389-392 F4.2 mag e_KmagD ?=9.99 Error on DENIS K magnitude
394 A1 --- XD [ABCDX] DENIS cross-identification flag (2)
396-411 A16 --- 2MASS 2MASS designation
413-418 F6.3 mas Dist2 ?=99.999 Distance to 2MASS source
420-425 F6.3 mag Jmag2 ?=99.990 2MASS J magnitude
427-431 F5.3 mag e_Jmag2 ?=9.990 Error on 2MASS J magnitude
433-438 F6.3 mag Hmag2 ?=99.990 2MASS H magnitude
440-444 F5.3 mag e_Hmag2 ?=9.990 Error on 2MASS H magnitude
446-451 F6.3 mag Kmag2 ?=99.990 2MASS K magnitude
453-457 F5.3 mag e_Kmag2 ?=9.990 Error on 2MASS K magnitude
459-461 A3 --- q_2MASS 2MASS photometric flag
463 A1 --- X2 [ABCDX] 2MASS cross-identification flag (2)
465 A1 --- ZP1 [A-E] Entire plate zero point correction
flag (3)
466 A1 --- ZP2 [A-E] 50 fibers group to which the fiber
belongs zero point correction flag (3)
467 A1 --- ZP3 [*] * when fiber is close to a 15 fibers gap
469-476 A8 --- Qual Spectra quality flag (4)
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Note (1): Source of proper motion as follows:
0 = no proper motion
1 = Tycho-2 proper motion
2 = Supercosmos Sky Survey proper motion
3 = STARNET2.0 proper motion
4 = GSC1.2 x 2MASS proper motion
5 = UCAC-2 proper motions
Note (2): Cross-identification flag as follows:
A = good association
B = 2 solutions within 1arcsec
C = more than two solutions within 1arcsec
D = nearest neighbour more than 2arcsec away
X = no possible counterpart found
Note (3): Flag value as follows:
A = dispersion around correction lower than 1km/s
B = dispersion between 1 and 2km/s
C = dispersion between 2 and 3km/s
D = dispersion larger than 3km/s
E = less than 15 fibers available for the fit
Note (4): Flag identifying possible problem in the spectra (values can be
combined) as follows:
a = asymmetric Ca lines
c = cosmic ray pollution
e = emission line spectra
n = noise dominated spectra
l = no lines visible
w = weak lines
g = strong ghost
t = bad template fit
s = strong residual sky emission
cc = bad continuum
r = red part of the spectra shows problem
b = blue part of the spectra shows problem
p = possible binary/doubled lined
x = peculiar object
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Acknowledgements:
Arnaud Siebert, siebert(at)astro.u-strasbg.fr
History:
* 08-Jul-2008: Original version
* 23-Oct-2008: Column 'Name' added to the catalog.
* 01-Nov-2008: Corrected version (from Arnaud Siebert)
(End) Arnaud Siebert, Patricia Vannier [CDS] 16-Jun-2008