J/ApJ/637/1102 Lick indices for metal-rich stars (Robinson+, 2006)
The N2K consortium. V. Identifying very metal-rich stars with low-resolution
spectra: finding planet-search targets.
Robinson S.E., Strader J., Ammons S.M., Laughlin G., Fischer D.
<Astrophys. J., 637, 1102-1112 (2006)>
=2006ApJ...637.1102R 2006ApJ...637.1102R
ADC_Keywords: Stars, nearby ; Spectroscopy ; Abundances
Keywords: methods: statistical - planetary systems - stars: abundances
Abstract:
We present empirical calibrations that provide estimates of stellar
metallicity, effective temperature, and surface gravity as a function
of Lick IDS indices. These calibrations have been derived from a
training set of 261 stars for which (1) high-precision measurements of
[Fe/H], Teff, and log(g) have been made using spectral-synthesis
analysis of HIRES spectra, and (2) Lick indices have also been
measured.
Description:
The N2K consortium was created to identify the "next two thousand"
metal-rich dwarf stars that would be suitable for radial-velocity
planet searches. Our observations were taken at two telescopes, the
Nickel 1m at Lick Observatory and the 2.1m at Kitt Peak National
Observatory. The Nickel observations were taken during 2004 April
23-26 and 2004 July 13-15. The 2.1m observations were taken during
2004 August 27 - September 2 with the GoldCam spectrograph.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 98 307 Lick indices for training-set stars
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See also:
J/ApJ/622/1102 : The planet-metallicity correlation. (Fischer+, 2005)
J/PASP/113/1365 : Super-metal-rich stars (Buzzoni+, 2001)
J/ApJS/169/430 : Atmospheric param. of 1907 metal-rich stars (Robinson+, 2007)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD The HD number
8 A1 --- Tel [KN] Telescope used (1)
10- 17 F8.6 0.1nm Ca4227 Lick Ca4227 index in units of Angstroms
19- 23 F5.3 0.1nm G4300 Lick G4300 index in units of Angstroms
25- 31 F7.4 0.1nm HgF Lick HγF index (4342Å) in Angstroms
33- 38 F6.3 0.1nm Fe4383 Lick Fe4383 index in units of Angstroms
40- 43 F4.2 0.1nm Fe4531 Lick Fe4531 index in units of Angstroms
45- 51 F7.4 0.1nm Fe4668 Lick Fe4668 index in units of Angstroms
53- 58 F6.3 0.1nm Hb Lick Hβ index (4861Å) in Angstroms
60- 63 F4.2 0.1nm Fe5015 Lick Fe5015 index in units of Angstroms
65- 70 F6.4 mag Mg2 Lick Mg2 index (5184-5196Å)
72- 77 F6.3 0.1nm Mgb Lick Mgb index (5160-5192Å) in Angstroms
79- 83 F5.3 0.1nm Fe5270 Lick Fe5270 index in units of Angstroms
85- 91 F7.4 0.1nm Fe5406 Lick Fe5406 index in units of Angstroms
93- 98 F6.3 0.1nm NaD Lick NaD index (5895Å) in Angstroms
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Note (1): Telescope used, defined as follows:
N = the Nickel telescope at Lick Observatory;
K = the 2.1m telescope at Kitt Peak National Observatory.
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History:
From electronic version of the journal
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
Johnson et al., Paper VI 2006ApJ...647..600J 2006ApJ...647..600J
Robinson et al., Paper VII 2007ApJS..169..430R 2007ApJS..169..430R, Cat. J/ApJS/169/430
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 09-Mar-2007