J/A+A/466/627 Parameters of DA white dwarfs in SDSS-DR1 (Hu+, 2007)
The mass and luminosity functions and the formation rate of DA white dwarfs
in the Sloan Digital Sky Survey.
Hu Q., Wu C., Wu X.-B.
<Astron. Astrophys. 466, 627 (2007)>
=2007A&A...466..627H 2007A&A...466..627H
ADC_Keywords: Stars, white dwarf ; Stars, masses ; Stars, diameters ;
Stars, distances ; Stars, ages ; Effective temperatures
Keywords: stars: fundamental parameters -
stars: luminosity function, mass function - stars: statistics -
white dwarfs
Abstract:
The SDSS Data Release 1 includes 1833 DA white dwarfs (WDs) and forms
the largest homogeneous sample of WDs. This sample provides the best
opportunity to study the statistical properties of WDs.
We adopt a recently established theoretical model to calculate the
mass and distance of each WD using the observational data. Then we
adopt a bin-correction method to correct for selection effects and use
the 1/V weight-factor method to calculate the luminosity function, the
continuous mass function and the formation rate of these WDs.
Description:
Full version of Table 2, including parameters of 1813 DA white
dwarfs in the SDSS Data Release 1 (20 DA white dwarfs with
unreasonable parameters have been deleted).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 97 1813 Catalogue of DA white dwarfs
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See also:
J/ApJ/607/426 : Catalog of white dwarfs in SDSS-DR1 (Kleinman+, 2004)
http://www.sdss.org/dr1 : SDSS DR1 Home Page
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- SDSS SDSS object name (HHMMSS-DDMMSS)
15- 18 I4 --- Seq SDSS number
20- 24 I5 K Teff Effective temperature
26- 30 I5 K e_Teff Uncertainty in Teff
32- 35 F4.2 [cm/s2] logg Log of surface gravity
37- 40 F4.2 [cm/s2] e_logg Uncertainty in logg
42- 45 F4.2 solMass Mass Mass of the star
47- 50 F4.2 solMass e_Mass Uncertainty of mass
52- 55 F4.2 0.01solRad Rad Radius of the star
57- 60 F4.2 0.01solRad e_Rad Uncertainty of radius
63- 71 E9.3 yr Age Age of the star
73- 77 F5.2 mag Mbol Bolometric magnitude
79- 83 F5.2 mag gMAG g-band absolute magnitude
85- 90 F6.1 pc Dist Heliocentric distance
92- 97 F6.1 pc e_Dist Uncertainty of distance
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Acknowledgements:
Xue-Bing Wu, wuxb(at)pku.edu.cn
(End) Xue-Bing Wu [Peking University], Patricia Vannier [CDS] 08-Feb-2007