J/A+AS/133/221 Library of ELODIE spectra (F5-K7 stars) (Soubiran+ 1998)
On line determination of stellar atmospheric parameters Teff, log g, [Fe/H] from
ELODIE echelle spectra. II - The library of F5 to K7 stars.
Soubiran C., Katz D., Cayrel R.
<Astron. Astrophys. Suppl. Ser. 133, 221 (1998)>
=1998A&AS..133..221S 1998A&AS..133..221S (SIMBAD/NED BibCode)
ADC_Keywords: Atlases; Spectroscopy ; Proper motions ; Radial velocities
Keywords: atlases - stars: abundances - stars: atmospheres -
stars: fundamental parameters
Description:
A library of 211 echelle spectra taken with ELODIE at the Observatoire
de Haute-Provence is proposed. It provides a set of spectroscopic
standards covering the full range of gravities and metallicities in
the effective temperature interval [4000K, 6300K]. The spectra are
straightened, wavelength calibrated, cleaned of cosmic ray hits, bad
pixels and telluric lines. They cover the spectral range [440nm,
680nm] with an instrumental resolution of 42000. For each star, basic
data were compiled from the Hipparcos catalogue (Cat. I/239) and the
Hipparcos Input Catalogue (Cat. I/196) (Table 1). Radial velocities
with a precision better than 100m/s are given. Atmospheric parameters
Teff, logg, [Fe/H] from the literature are discussed. Because of
scattered determinations in the bibliography, even for the most
well-known stars, these parameters were adjusted by an iterative
process which takes account of common or different spectral features
between the standards, using our homogeneous set of spectra. Revised
values of effective temperature, gravity and metallicity are proposed
in Table 1. They are still consistent with the literature, and also
lead to the self-consistency of the library, in the sense that similar
spectra have similar atmospheric parameters. This adjustment was
performed by using step by step a method based on the least square
comparison of carefully prepared spectra, which was originally
developed for the on-line estimation of the atmospheric parameters of
faint field stars (Katz et al., 1998A&A...338..151K 1998A&A...338..151K. Paper I.).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 173 210 Basic data (except for the Sun)
stars.dat 98 211 Observational informations on the spectra
spectra/* . 211 Directory containing the spectra
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See also:
III/200 : Catalogue of [Fe/H] (Cayrel de Strobel+, 1997)
I/196 : Hipparcos Input Catalogue, Version 2 (Turon+ 1993)
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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2- 12 A11 --- HD/BD HD (Cat. III/135) or BD (Cat. I/122)
designation
14- 19 I6 --- HIP HIP (Cat. I/239) number
21- 29 A9 --- SpT Spectral type
31- 32 I2 h RAh Right ascension (ICRS, Epoch=J1991.25)
34- 35 I2 min RAm Right ascension (ICRS, Epoch=J1991.25)
37- 41 F5.2 s RAs Right ascension (ICRS, Epoch=J1991.25)
43 A1 --- DE- Declination sign (ICRS, Epoch=J1991.25)
44- 45 I2 deg DEd Declination (ICRS, Epoch=J1991.25)
47- 48 I2 arcmin DEm Declination (ICRS, Epoch=J1991.25)
50- 53 F4.1 arcsec DEs Declination (ICRS, Epoch=J1991.25)
55- 59 F5.2 mag Vmag Visual V magnitude
61- 66 F6.2 mas Plx Parallax
68- 71 F4.2 mas e_Plx Standard error on parallax
73- 80 F8.2 mas/yr pmRA Proper motion in RA x cos(DE) (ICRS)
82- 85 F4.2 mas/yr e_pmRA Standard error on pmRA
87- 94 F8.2 mas/yr pmDE Proper motion in DE (ICRS)
96- 99 F4.2 mas/yr e_pmDE Standard error on pmDE
101-107 F7.2 km/s HRV ELODIE heliocentric radial velocity
109-112 I4 K Teff Effective temperature
114-117 F4.2 cm/s2 logg Logarithm of gravity
119-123 F5.2 Sun [Fe/H] Metallicity
125 I1 --- Level See Note (1)
127-131 F5.2 mag Mbol ? Absolute bolometric magnitude (or Mv)
132-134 A3 --- n_Mbol (*) if Mv instead of Mbol
136-140 F5.1 pc Dist ? Distance from Hipparcos parallax
142-146 F5.1 pc Dist+ ? Distance + one sigma
148-152 F5.1 pc Dist- ? Distance - one sigma
154-159 F6.1 km/s Uvel ? U velocity with respect to the Sun (2)
161-166 F6.1 km/s Vvel ? V velocity with respect to the Sun
168-173 F6.1 km/s Wvel ? W velocity with respect to the Sun
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Note (1): Reliability of the atmospheric parameters
1: poor
2: medium
3: good
4: high
Note (2): U is positive to the anticenter
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Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- FileName Name of file containing the full spectrum
in the subdirectory spectra
13- 20 A8 "DD/MM/YY" Date Observation date
22- 29 F8.5 h MidTU Middle TU
31- 34 I4 s ExpTime Exposition time
36- 46 A11 ---- HD/BD HD or BD name
48- 49 I2 h RAh ? Right ascension (J2000.0) (1)
51- 52 I2 min RAm ? Right ascension (J2000.0)
54- 57 F4.1 s RAs ? Right ascension (J2000.0)
60 A1 --- DE- Declination sign (J2000.0)
61- 62 I2 deg DEd ? Declination (J2000.0)
64- 65 I2 arcmin DEm ? Declination (J2000.0)
67- 68 I2 arcsec DEs ? Declination (J2000.0)
72- 78 F7.3 km/s BERV Earth velocity correction
80- 86 F7.2 km/s RV Radial velocity of the star with respect to
the baricenter of the solar system
88- 91 F4.2 km/s e_RV Standard deviation on RV
93- 98 F6.2 --- S/N Mean signal-to-noise ratio
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Note (1): The positions were precessed from the positions given in the headers
of the spectra files.
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Description of the spectra :
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Each of the 211 spectra is labelled by the Hipparcos number of the star :
for example, h86443.dat is the file containing the spectrum of HIP 86443 (the
spectrum of the Sun is in the file sun.dat). Each file starts with 13 lines
of observational information. BERV is the Earth velocity correction, RV is the
radial velocity of the star with respect to the baricenter of the solar system
(RV = RV_obs + BERV), SIGMA RV is the standard deviation of the Gaussian fitted
on the cross-correlation function and measures in km/s the mean resolution of
the spectrum (instrumental + intrinsic). The other descriptors are
self-explanatory. Each file is then made of 48128 lines (1024 spectral elements
x 47 orders) with the order number, the wavelength and the corresponding flux
(not normalised). The pixels which were eliminated through the different
cleaning processes are labelled by a value of -100. of the corresponding flux.
Description of the spectra files:
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Bytes Format Units Label Explanations
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2- 4 I3 --- o Number of the ELODIE order
6- 15 F10.6 nm lambda Wavelength
17- 31 F15.3 --- F Flux (in electrons e-)
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Acknowledgements: Caroline Soubiran
References:
Katz et al., Paper I 1998A&A...338..151K 1998A&A...338..151K
(End) C. Soubiran [Observatoire de Bordeaux], Patricia Bauer [CDS] 26-Jun-1998