J/AJ/131/1784 Astrometric Grid Giant Star Survey. I. (Bizyaev+, 2006)
The Space Interferometry Mission Astrometric Grid Giant Star Survey.
I. Stellar parameters and radial velocity variability.
Bizyaev D., Smith V.V., Arenas J., Geisler D., Majewski S.R.,
Patterson R.J., Cunha K., Del Pardo C., Suntzeff N.B., Gieren W.
<Astron. J., 131, 1784-1796 (2006)>
=2006AJ....131.1784B 2006AJ....131.1784B
ADC_Keywords: Stars, giant ; Radial velocities ; Abundances, [Fe/H]
Keywords: stars: abundances - stars: fundamental parameters - stars: late-type -
stars: oscillations - techniques: radial velocities
Abstract:
We present results from a campaign of multiple-epoch echelle
spectroscopy of relatively faint (V=9.5-13.5mag) red giants
observed as potential astrometric grid stars for the Space
Interferometry Mission (SIM PlanetQuest). Data are analyzed for 775
stars selected from the Grid Giant Star Survey, spanning a wide range
of effective temperatures (Teff), gravities, and metallicities. The
spectra are used to determine these stellar parameters and to monitor
radial velocity (RV) variability at the 100m/s level.
Description:
Spectroscopic observations of 434 stars in the northern subsample of
GGSS candidates were conducted in the period from 2001 January to 2002
December. We made use of the 2.1m telescope at the McDonald
Observatory and the Sandiford Cassegrain echelle spectrograph, which
provides R=55000 resolution.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 74 434 Stellar parameters for the entire McDonald sample
of 434 GGSS (Grid Giant Star Survey) stars
table5.dat 63 148 RV-variability for the 148 McDonald repeated stars
table6.dat 44 375 RV-variability for the 341 CORALIE repeat
observation stars
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Name Star name (1)
16- 17 I2 h RAh Hour of Right Ascension (J2000)
19- 20 I2 min RAm Minute of Right Ascension (J2000)
22- 26 F5.2 s RAs Second of Right Ascension (J2000)
28 A1 --- DE- Sign of the Declination (J2000)
29- 30 I2 deg DEd Degree of Declination (J2000)
32- 33 I2 arcmin DEm Arcminute of Declination (J2000)
35- 38 F4.1 arcsec DEs Arcsecond of Declination (J2000)
40- 43 I4 K Teff Effective temperature
45- 48 F4.1 [Sun] [Fe/H]ph The [Fe/H] metallicity from photometry
50- 53 F4.1 kpc Dph Distance from photometry
55- 58 F4.2 [cm/s2] log(g) Log of the spectroscopic surface gravity
60- 63 F4.2 [cm/s2] e_log(g) Uncertainty in log(g)
65- 69 F5.2 [Sun] [Fe/H]sp The [Fe/H] metallicity from spectroscopy
71- 74 F4.2 [Sun] e_[Fe/H]sp Uncertainty in [Fe/H]sp
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Note (1): Sources identified as in Simbad.
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Name Star name
16- 20 F5.2 mag Mmag Washington M band magnitude
22- 25 I4 K Teff Effective temperature
27- 29 F3.1 kpc Dph Distance from photometry
31- 34 F4.1 [Sun] [Fe/H]ph The [Fe/H] metallicity from photometry
36- 39 F4.2 [cm/s2] log(g) Log of the spectroscopic surface gravity
41- 44 F4.2 [cm/s2] e_log(g) Uncertainty in log(g)
46- 50 F5.2 [Sun] [Fe/H]sp The [Fe/H] metallicity from spectroscopy
52- 55 F4.2 [Sun] e_[Fe/H]sp Uncertainty in [Fe/H]sp
57- 61 F5.3 km/s sigma Radial velocity variability
63 I1 --- Nobs Number of RV observations
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Name Star name
16- 20 F5.2 mag Mmag Washington M band magnitude
22- 25 I4 K Teff Effective temperature
27- 29 F3.1 kpc Dph Distance from photometry
31- 34 F4.1 [Sun] [Fe/H]ph The [Fe/H] metallicity from photometry
36- 41 F6.3 km/s sigma Radial velocity variability
43- 44 I2 --- Nobs Number of RV observations
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 22-Aug-2011