J/ApJS/169/430 Atmospheric parameters of 1907 metal-rich stars (Robinson+, 2007)
The N2K consortium. VII. Atmospheric parameters of 1907 metal-rich stars:
finding planet-search targets.
Robinson S.E., Ammons S.M., Kretke K.A., Strader J., Wertheimer J.G.,
Fischer D.A., Laughlin G.
<Astrophys. J. Suppl. Ser., 169, 430-438 (2007)>
=2007ApJS..169..430R 2007ApJS..169..430R
ADC_Keywords: Stars, late-type ; Abundances ; Stars, nearby
Keywords: methods: statistical ; planetary systems ; stars: abundances
Abstract:
We report high-precision atmospheric parameters for 1907 stars in the
N2K low-resolution spectroscopic survey, designed to identify
metal-rich FGK dwarfs likely to harbor detectable planets. Of these
stars, 284 are in the ideal temperature range for planet searches,
Teff≤6000K, and have a 10% or greater probability of hosting
planets based on their metallicities. This catalog contains
measurements of [Fe/H] (sigma[Fe/H]=0.07dex),
Teff(sigma_Teff=82K), and logg (sigmalogg=0.13dex). Atmospheric
parameters are derived from Lick index measurements, as described in
Robinson et al. (2006, Cat. J/ApJ/637/1102). Lick indices are
measured from spectra obtained with the GCAM spectrograph on the 2.1m
telescope at KPNO.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 90 1964 Lick indices for program targets and test stars
table3.dat 92 1907 Stellar atmospheric parameters
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See also:
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
J/ApJS/159/141 : Spectroscopic properties of cool stars. I. (Valenti+, 2005)
J/ApJ/637/1102 : Lick indices for metal-rich stars (Robinson+, 2006)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP The Hipparcos number (Cat. I/239/hip_main)
8 A1 --- VF05 [*] Valenti & Fischer (2005,
Cat. J/ApJS/159/141) code (1)
10- 15 F6.3 --- Ca4227 Lick Ca4227 index
17- 22 F6.3 0.1nm G4300 Lick G4300 index in Angstroms
24- 29 F6.3 0.1nm HgF Lick HγF index (4342Å) in Angstroms
31- 36 F6.3 0.1nm Fe4383 Lick Fe4383 index in Angstroms
38- 43 F6.3 0.1nm Fe4531 Lick Fe4531 index in Angstroms
45- 50 F6.3 0.1nm Fe4668 Lick Fe4668 index in Angstroms
52- 56 F5.3 0.1nm Hb Lick Hβ index (4861Å) in Angstroms
58- 63 F6.3 0.1nm Fe5015 Lick Fe5015 index in Angstroms
65- 70 F6.3 mag Mg2 Lick Mg2 index (5184-5196Å)
72- 77 F6.3 0.1nm Mgb Lick Mg b index (5160-5192Å) in Angstroms
79- 84 F6.3 0.1nm Fe5270 Lick Fe5270 index in Angstroms
86- 90 F5.3 0.1nm NaD Lick Na D index (5895Å) in Angstroms
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Note (1): '*' means that the star is in common with VF05 (Valenti &
Fischer J/ApJS/159/141), used to test calibrations of Paper 1
(Robinson et al., Cat. J/ApJ/637/1102).
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP The Hipparcos (I/239) number
8- 18 A11 --- SpType MK spectral type from SIMBAD
20- 23 I4 K Teff Effective temperature
25 A1 --- f_Teff [b] Teff out of tested range (1)
27- 31 F5.2 [Sun] [Fe/H] Metallicity
33 A1 --- f_[Fe/H] [b] [Fe/H] out of tested range (1)
35- 38 F4.2 [cm/s2] log(g) Log of the surface gravity
40 A1 --- f_log(g) [b] log(g) out of tested range (1)
42 A1 --- Kc [*] Known component code (2)
44 A1 --- Oc [*] Observed component code (3)
46- 92 A47 --- Comm Additional comment
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Note (1): 'b' means that the atmospheric parameter is out of tested range
of Lick Indices calibration: 4100K<Teff<6400K,
-0.95dex<[Fe/H]<0.5dex, 4.0dex<log(g)<5.1dex.
Note (2): '*' means that the star is known to be a member of a binary
or multiple system. Multiplicity information from SIMBAD database.
Note (3): '*' means that a possible companion star was observed on the
2.1m telescope slit camera. Slit width 1.3", slit length 5.2".
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Acknowledgements:
S.E. Robinson, ser(at)ucolick.org
References:
Fischer et al., Paper I 2005ApJ...620..481F 2005ApJ...620..481F
Sato et al., Paper II 2005ApJ...633..465S 2005ApJ...633..465S
Fischer et al., Paper III 2006ApJ...637.1094F 2006ApJ...637.1094F
Ammons et al., Paper IV 2006ApJ...638.1004A 2006ApJ...638.1004A
Robinson et al., Paper V 2006ApJ...637.1102R 2006ApJ...637.1102R, Cat. J/ApJ/637/1102
Johnson et al., Paper VI 2006ApJ...647..600J 2006ApJ...647..600J
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 10-Apr-2007