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J/MNRAS/326/959 Empirical calibration of the near-IR Ca triplet (Cenarro+ 2001)
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Empirical calibration of the near-IR CaII triplet.
I. The stellar library and index definition.
Cenarro, A.J., Cardiel, N., Gorgas, J., Peletier, R.F., Vazdekis, A.,
Prada, F.
<Mon. Not. R. Astron. Soc. 326, 959 (2001)>
=2001MNRAS.326..959C
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ADC_Keywords: Abundances, [Fe/H] ; Spectroscopy
Keywords: stars: abundances - stars: fundamental parameters -
globular clusters: general - galaxies: stellar content
Description:
File table contains details of the new near-IR stellar library
observed to calibrate the Ca II triplet. It includes the indices CaT*,
CaT and PaT measured over the final spectra as well as their
corresponding errors. The Henry Draper Catalogue number, other names
(mainly HR and BD numbers), coordinates, spectral type, luminosity
class, apparent magnitude and atmospheric parameters (as derived in
Paper II; Cenarro et al., 2001MNRAS.326..981C) are also given.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table.dat 227 706 Details of the near-IR stellar library
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Byte-by-byte Description of file: table.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Num Star number within the library
5- 10 I6 --- HD ? HD (Cat. <III/135>) number
11- 12 A2 --- m_HD Multiplicity index on HD
14- 26 A13 --- Name1 ? Alternate name (HR or BD numbers)
28- 58 A31 --- Name2 ? Alternate name (other names)
60- 72 A13 --- SpType ? Spectral type (1)
74- 78 I5 K Teff ? Effective temperature
80- 84 F5.3 [cm/s2] log(g) ? Logarithm of gravity
86- 90 F5.2 [Sun] [Fe/H] ? Iron abundance relative to the sun
92- 96 F5.2 [Sun] [Ca/Fe] ? Calcium abundance relative to the sun
99-101 A3 --- Refer ? Reference for atmospheric parameters (2)
102 A1 --- r_[Ca/Fe] ? Reference for [Ca/Fe] (3)
104-110 F7.3 0.1nm CaT* CaT* index (4)
112-116 F5.3 0.1nm e_CaT* CaT* index error
118-124 F7.3 0.1nm resCaT* ? CaT* residual from fitting functions (5)
126-132 F7.3 0.1nm CaT CaT index (4)
134-138 F5.3 0.1nm e_CaT CaT index error
140-146 F7.3 0.1nm resCaT ? CaT residual from fitting functions (5)
148-154 F7.3 0.1nm PaT PaT index (4)
156-160 F5.3 0.1nm e_PaT PaT index error
162-168 F7.3 0.1nm resPaT ? PaT residual from fitting functions (5)
170-174 F5.1 --- S/N Mean signal-to-noise ratio per angstrom
176-177 I2 h RAh Right ascension (2000.0)
179-180 I2 min RAm Right ascension (2000.0)
182-185 F4.1 s RAs Rigth ascension (2000.0)
187 A1 --- DE- Declination sign
188-189 I2 deg DEd Declination (2000.0)
191-192 I2 arcmin DEm Declination (2000.0)
194-195 I2 arcsec DEs Declination (2000.0)
197-201 F5.2 mag Vmag Apparent V magnitude
203-207 F5.2 mag Bmag ? Apparent B magnitude
209-211 A3 --- LIB ? Reference library codes (6)
213-226 A14 --- Runs Run number (7)
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Note (1): For some cluster stars, we list in this column their positions
in the HR diagram (SGB: subgiant branch; GB: giant branch; HB:
horizontal branch; AGB: asymptotic giant branch)
Note (2): References for atmospheric parameters:
- For cluster stars (rows 1-156): Numerical codes 'ijk' indicate
that Teff is from 'i', log(g) from 'j', and [Fe/H] from 'k'.
Codes for 'i', 'j' and 'k' are:
1 - Derived from B-V versus Teff relations in Alonso,
Arribas & Martinez-Roger (1996A&A...313..873A) and
Alonso, Arribas & Martinez-Roger (1999A&AS..140..261A)
2 - Mean from B-V and V-K versus Teff relations in Alonso et al.
(1996A&A...313..873A; 1999A&AS..140..261A)
3 - Worthey et al. (1994, Cat. <J/ApJS/94/687>)
4 - Gorgas et al. (1993ApJS...86..153G), Worthey et al.
(1994, Cat. J/ApJS/94/687) and references therein
5 - Carretta & Gratton (1997, Cat. <J/A+AS/121/95>)
6 - Rutledge, Hesser & Stetson (1997PASP..109..907R)
7 - Boesgaard & Friel (1990ApJ...351..467B)
8 - Friel & Boesgaard (1992ApJ...387..170F)
9 - Friel & Janes (1993A&A...267...75F)
0 - Friel (1995ARA&A..33..381F)
- For field stars (rows 157-706): Numerical codes 'ijk' indicate
that Teff is from RFi, log(g) from RFj, and [Fe/H] from RFk
(see Paper II, 2001MNRAS.326..981C). Also, 'ijk' = 'SKC' means
that Teff, log(g) and [Fe/H] are taken from Soubiran, Katz & Cayrel
(1998, Cat. J/A+AS/133/221)
Note (3): Sources for [Ca/Fe] are the following:
0 - Thevenin (1998, Cat. III/193)
1 - Nissen & Schuster (1997, Cat. <J/A+A/326/751>)
2 - Pilachowski, Sneden & Kraft (1996AJ....111.1689P)
3 - Gratton & Sneden (1987A&A...178..179G)
Note (4): Indices definitions:
CaT = Ca1 + Ca2 + Ca3
This index measures the P16, P15 and P13 lines falling in the
Ca1 (8484.0-8513.0){AA}, Ca2 (8522.0-8562.0){AA} and
Ca3 (8642.0-8682.0){AA} bandpasses
PaT = Pa1 + Pa2 + Pa3
This index measures the P17, P14 and P12 lines on which are centered
Pa1 (8461.0-8474.0){AA}, Pa2 (8577.0-8619.0){AA} and
Pa3 (8730.0-8772.0){AA} bandpasses
CaT*: new Ca triplet index, which expresses the strength of the
Ca II lines corrected from the contamination by Paschen lines.
Cat* = CaT - 0.93PaT
Note (5): The index residuals are computed as the observed index minus the
index predicted by the fitting functions presented in Paper III
(Cenarro et al. 2001c, submitted to MNRAS)
Note (6): The codes for the libraries from which the stars (not the
observations) were taken are the following:
L - Lick/IDS Library (Burstein et al. 1984ApJ...287..586B,
Faber et al. 1985ApJS...57..711F,
Burstein et al. 1986AJ.....91.1130B,
Gorgas et al. 1993ApJS...86..153G,
Worthey et al. 1994, Cat. <J/ApJS/94/687>)
D - Diaz, Terlevich & Terlevich (1989MNRAS.239..325D)
J - Jones (1997, PhD thesis, Univ. of North Carolina, Chapel Hill)
A - Andrillat, Jaschek & Jaschek (1995, Cat. III/183)
W - Worthey G. (private communication)
I - Idiart, Thevenin & de Freitas Pacheco (1997AJ....113.1066I)
T - Thevenin (1998, Cat. <III/193>)
Note (7): Run number(s), according to Table 2 of the paper, in which the star
was observed. Number of repeated observations within each run is
given in parenthesis
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Acknowledgements: Javier Cenarro <cen@astrax.fis.ucm.es>
Javier Gorgas <fjg@astrax.fis.ucm.es>
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(End) Javier Gorgas [UCM] 14-Sep-2001