J/AZh/83/158 High precision effective temperatures of giants (Kovtyukh+, 2006)
Determination of high precision effective temperatures for giants based on
spectroscopic criteria.
Kovtyukh V.V., Mishenina T.V., Gorbaneva T.I., Bienayme O., Soubiran C.,
Kantcen L.E.
<Astron. Zh., 83, 158 (2006)>
=2006AZh...83...158K 2006AZh...83...158K
=2006ARep..50...134K 2006ARep..50...134K
ADC_Keywords: Stars, nearby ; Stars, giant ; Effective temperatures
Abstract:
The spectral lines of high and low excitation potentials respond
differently to the change in effective temperature (Teff). Therefore,
the ratio of their depths (or equivalent widths) is a very sensitive
temperature indicator. A set of 100 relations is obtained which rely
Teff on line depth ratios, calibrated against previously published
precise (one per cent) temperature estimates of giants. Highly precise
temperatures have been determined from this relations for a set of 110
giants of about solar metallicity, based on high resolution (R=42000),
high S/N echelle spectra. The application range of the calibrations is
4000-7000K (F2III-K4III). The internal error of a single calibration
is less than 95K, while the combination of all calibrations for a
spectrum of S/N=100 reduces uncertainty to only 5-25K (1σ). The
big advantage of using line-depth ratios is the independence on the
interstellar reddening, spectral resolution, rotational and
microturbulence broadening.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
objects.dat 79 110 Coordinates and main parameters of giants
table1.dat 74 110 Teff determinations for 110 giants
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See also:
III/135 : HD Catalogue and Extension (Cannon+ 1918-1924; ADC 1989)
J/A+AS/133/221 : Library of ELODIE spectra (F5-K7 stars) (Soubiran+ 1998)
J/A+AS/129/505 : Effective temp. by Infrared Flux Method (Blackwell+ 1998)
J/AN/321/277 : Effective temperatures of K-M giants (Strassmeier+, 2000)
Byte-by-byte Description of file: objects.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [HD]
4- 9 I6 --- HD HD number
11- 29 A19 --- Name Other name
30- 31 I2 h RAh Right ascension, ICRS (2000)
33- 34 I2 min RAm Right ascension, ICRS (2000)
36- 42 F7.4 s RAs Right ascension, ICRS (2000)
44 A1 --- DE- Declination sign, ICRS (2000)
45- 46 I2 deg DEd Declination, ICRS (2000)
48- 49 I2 arcmin DEm Declination, ICRS (2000)
51- 56 F6.3 arcsec DEs Declination, ICRS (2000)
58- 62 F5.3 mag Bmag B magnitude
64- 68 F5.3 mag Vmag V magnitude
70- 79 A10 --- SpType MK spectral type
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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- 6 I6 --- HD HD number
9- 12 I4 K Teff Mean effective temperature of the star
15- 16 I2 --- N Number of the calibrations used
18- 21 F4.1 K sigma rms, standard error of the mean
23- 26 I4 K Teff1 ? Teff from Soubiran et al., 1998,
Cat. J/A+AS/133/221
28- 31 I4 K Teff2 ? Teff from Boyarchuk et al.,
2001ARep...45..301B 2001ARep...45..301B (2001AZh....78..349B 2001AZh....78..349B)
33- 36 I4 K Teff3 ? Teff from Gray et al., 2001PASP..113..723G 2001PASP..113..723G
38- 41 I4 K Teff4 ? Teff from Strassmeier & Schordan, 2000,
Cat. J/AN/321/277
43- 46 I4 K Teff5 ? Teff from Alonso et al., 1999A&AS..139..335A 1999A&AS..139..335A
48- 51 I4 K Teff6 ? Teff from Blackwell & Lynas-Gray, 1998,
Cat. J/A+AS/129/505
54- 59 F6.3 mag VMAG ? Absolute V magnitude
61- 68 A8 --- SpType MK spectral type
70- 74 F5.3 mag B-V (B-V) color index
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(End) Veta Avedisova (INASAN) 05-Jun-2007