J/MNRAS/446/4078 New white dwarf stars in SDSS DR10 (Kepler+, 2015)
New white dwarf stars in the Sloan Digital Sky Survey Data Release 10.
Kepler S.O., Pelisoli I., Koester D., Ourique G., Kleinman S.J.,
Romero A.D., Nitta A., Eisenstein D.J., Costa J.E.S., Kulebi B., Jordan S.,
Dufour P., Giommi P., Rebassa-mansergas A.
<Mon. Not. R. Astron. Soc., 446, 4078-4087 (2015)>
=2015MNRAS.446.4078K 2015MNRAS.446.4078K (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Stars, white dwarf ; Photometry, SDSS ; Proper motions
Keywords: catalogues - stars: magnetic field - subdwarfs - white dwarfs
Abstract:
We report the discovery of 9088 new spectroscopically confirmed white
dwarfs and subdwarfs in the Sloan Digital Sky Survey Data Release 10.
We obtain Teff, logg and mass for hydrogen atmosphere white dwarf
stars (DAs) and helium atmosphere white dwarf stars (DBs), and
estimate the calcium/helium abundances for the white dwarf stars with
metallic lines (DZs) and carbon/helium for carbon-dominated spectra
DQs. We found 1 central star of a planetary nebula, 2 new oxygen
spectra on helium atmosphere white dwarfs, 71 DQs, 42 hot DO/PG1159s,
171 white dwarf+main-sequence star binaries, 206 magnetic DAHs, 327
continuum-dominated DCs, 397 metal-polluted white dwarfs, 450
helium-dominated white dwarfs, 647 subdwarfs and 6887 new
hydrogen-dominated white dwarf stars.
Description:
The targeted white dwarfs were required to be point sources with clean
photometry, and to have USNO-B Catalog counterparts (Monet et al..
2003, Cat. I/284). They were also restricted to regions inside the DR7
imaging footprint and required to have colours within the ranges
g<19.2, (u-r)<0.4, -1<(u-g)<0.3, -1<(g-r)<0.5 and to have low Galactic
extinction Ar<0.5mag. Additionally, targets that did not have
(u-r)←0.1 and (g-r)←0.1 were required to have USNO proper motions
larger than 2 arcsec per century. Objects satisfying the selection
criteria that had not been observed previously by the SDSS were
denoted by the WHITEDWARF_NEW target flag, while those with prior SDSS
spectra are assigned the WHITEDWARF_SDSS flag. Some of the latter were
re-observed with BOSS in order to obtain the extended wavelength
coverage that the BOSS spectrograph offers.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table6.dat 259 9112 New white dwarf stars
--------------------------------------------------------------------------------
See also:
I/284 : The USNO-B1.0 Catalog (Monet+ 2003)
II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
Byte-by-byte Description of file: table6.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 A19 --- SDSS SDSS J designation (HHMMSS.ss+DDMMSS.ss)
21- 35 A15 --- PMJ SDSS Plate-MJD-Fiber
37- 39 I3 --- S/N SDSS g-band signal-to-noise ratio
41- 45 F5.2 mag umag SDSS u-band PSF magnitude
47- 51 F5.2 mag e_umag rms uncertainty on umag
53- 57 F5.2 mag gmag SDSS g-band PSF magnitude
59- 63 F5.2 mag e_gmag rms uncertainty on gmag
65- 69 F5.2 mag rmag SDSS r-band PSF magnitude
71- 75 F5.2 mag e_rmag rms uncertainty on rmag
77- 81 F5.2 mag imag SDSS i-band PSF magnitude
83- 87 F5.2 mag e_imag rms uncertainty on imag
89- 93 F5.2 mag zmag SDSS z-band PSF magnitude
95- 99 F5.2 mag e_zmag rms uncertainty on zmag
101-105 F5.2 0.01yr-1 pm SDSS proper motion
107-112 I6 K Teff Effective temperature (1)
114-118 I5 K e_Teff rms uncertainty on Teff
120-125 F6.3 [cm/s2] logg Surface gravity (1)
127-131 F5.3 [cm/s2] e_logg rms uncertainty on logg
133-150 A18 --- Type Human classification (2)
152-157 I6 --- Teff(3D) ? Teff for pure DAs and DBs (1)
159-163 I5 --- e_Teff(3D) ? rms uncertainty on Teff(3D)
165-170 F6.3 [cm/s2] logg(3D) ? Surface gravity (1)
172-176 F5.3 [cm/s2] e_logg(3D) ? rms uncertainty on logg(3D)
178-182 F5.3 Msun Mass ? Calculated mass
184-189 F6.4 Msun e_Mass ? rms uncertainty on Mass
191-259 A69 --- Com Comments (3)
--------------------------------------------------------------------------------
Note (1): temperatures and surface gravities are corrected to the
three-dimensional convection models of Tremblay et al. (2013A&A...559A.104T 2013A&A...559A.104T).
Note (2): A: designates an uncertain classification
Note (3): The Ca/He and C/He abundances, calculated assuming logg=8.0, are
indicated by -log(Ca/He) or -log(C/He).
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 23-Jul-2015