J/A+A/352/555 Fundamental parameters of stars (Allende Prieto+, 1999)
Fundamental parameters of nearby stars from the comparison with evolutionary
calculations: masses, radii and effective temperatures
Allende Prieto C., Lambert D.L.
<Astron. Astrophys. 352, 555 (1999)>
=1999A&A...352..555A 1999A&A...352..555A
ADC_Keywords: Stars, nearby ; Stars, masses ; Stars, diameters ;
Effective temperatures
Keywords: stars: fundamental parameters - Galaxy: stellar content -
stars: luminosity function, mass function -
stars: Hertzprung-Russel (HR) and C-M diagrams
Description:
The Hipparcos mission has made it possible to constrain the positions
of nearby field stars in the colour-magnitude diagram with very high
accuracy. These positions can be compared with the predictions of
stellar evolutionary calculations to provide information on the basic
parameters of the stars: masses, radii, effective temperatures, ages,
and chemical composition. The degeneracy between mass, age, and
metallicity is not so large as to prevent a reliable estimate of
masses, radii and effective temperatures, at least for stars of solar
metallicity. The evolutionary models of Bertelli et al. (1994, Cat.
J/A+AS/106/275) predict those parameters finely, and furthermore,
the applied transformation from the theoretical log(g)-Teff to the
observational Mv-B-V plane is precise enough to derive radii with an
uncertainty of ∼6%, masses within 8%, and Teffs within ∼2% for a
certain range of the stellar parameters. This is demonstrated by means
of comparison with the measurements in eclipsing binaries and the
InfraRed Flux Method. The application of the interpolation procedure
in the theoretical isochrones to the stars within 100pc from the Sun
observed with Hipparcos provides estimates for 17,219 stars included
in this Table.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 108 17219 Stellar parameters for the stars in the Hipparcos
catalog within 100pc from the Sun included in the
ranges for the radius, mass, effective temperature
and gravity described in Section 4 of the paper.
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See also:
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- 7 I6 --- HIP Hipparcos (Cat. I/239) number
9- 13 F5.2 mag Vmag Johnson V magnitude
15- 22 F8.2 mas plx Trigonometric parallax
24- 28 F5.2 mas e_plx mrs uncertainty on plx
30- 34 F5.2 mag VMAG Absolute V magnitude
36- 40 F5.2 mag e_VMAG rms uncertainty on VMAG
42- 48 F7.3 mag B-V B-V colour index
50- 54 F5.2 [cm/s2] logg Logarithm of the gravity
56- 60 F5.2 [cm/s2] e_logg rms uncertainty on logg
62- 66 F5.2 solMass Mass Mass
68- 72 F5.2 solMass e_Mass rms uncertainty on Mass
74- 78 F5.2 [solRad] logRad Logarithm of the radius
80- 84 F5.2 [solRad] e_logRad rms uncertainty on logRad
86- 90 F5.2 mag BC Bolometric correction
92- 96 F5.2 mag e_BC rms uncertainty on BC
98- 102 F5.2 [K] logTeff Logarithm of the effective temperature
104- 108 F5.2 [K] e_logTeff rms uncertainty on logTeff
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History: On 14-Feb-2000, a correction was made on the values of logg and e_logg
for all data of table1.dat
Acknowledgements: Carlos Allende Prieto
(End) Patricia Bauer [CDS] 21-Oct-1999