Information on Service 'SDSS-DR10 white dwarfs catalog'

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The catalogue WDSLOAN10 has been constructed by spectroscopically selecting white dwarfs and subdwarfs in the Sloan Digital Sky Survey Data Release 10. It offers Teff, log(g) and mass for hydrogen atmosphere white dwarf stars (DAs) and helium atmosphere white dwarf stars (DBs), and estimatives of calcium/helium abundances for the white dwarf stars with metallic lines (DZs) and carbon/helium for carbon dominated spectra DQs.

For a list of all services and tables belonging to this service's resource, see Information on resource 'New white dwarf stars in the SDSS-DR10'

Service Documentation

We report the discovery of 9089 new spectroscopically confirmed white dwarfs and subdwarfs in the Sloan Digital Sky Survey Data Release 10. We obtain Teff, log(g) 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 6888 new hydrogen dominated white dwarf stars.

Overview

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Coverage

This service is published as follows:

local means it is listed on our front page, ivo_managed means it has a record in the VO registry.

Input Fields

The following fields are available to provide input to the service (with some renderers, some of these fields may be unavailable):

NameTable Head DescriptionUnitUCD
DEC Delta (ICRS) Declination (ICRS decimal) deg pos.eq.dec
hscs_pos Position/Name Coordinates (as h m s, d m s or decimal degrees), or SIMBAD-resolvable object N/A N/A
hscs_sr Search radius Search radius in arcminutes N/A N/A
humanID classification Human clssification N/A meta.code.class
mass Mass Calculated mass solMass phys.mass
maxrec Match limit Maximum number of records returned. Pass 0 to retrieve service parameters. N/A N/A
RA Alpha (ICRS) Right Ascension (ICRS decimal) deg pos.eq.ra
responseformat Output Format File format requested for output. N/A meta.code.mime
SR Search Radius Search radius deg N/A
T_eff Temp eff Effective Temperature K phys.temperature.effective;meta.main
verb Verbosity Exhaustiveness of column selection. VERB=1 only returns the most important columns, VERB=2 selects the columns deemed useful to the average user, VERB=3 returns a table with all available columns. N/A N/A

Default Output Fields

The following fields are contained in the output by default. More fields may be available for selection; these would be given below in the VOTable output fields.

NameTable Head DescriptionUnitUCD
decj2000 Dec Declination deg pos.eq.dec;meta.main
g mag_g (psf) SDSS g band PSF magnitude mag phot.mag;em.opt.B
g_err mag_g uncertainty SDSS g band uncertainty mag stat.error;phot.mag;em.opt.B
humanID classification Human clssification N/A meta.code.class
i mag_i (psf) SDSS i band PSF magnitude mag phot.mag;em.opt.I
i_err mag_i uncertainty SDSS i band uncertainty mag stat.error;phot.mag;em.opt.I
log_C -log(C/He) Carbon/Helium emission lines ratio N/A phys.abund;arith.ratio
log_C_err -log(C/He) Carbon/Helium emission lines ratio error N/A stat.error;phys.abund;arith.ratio
log_Ca -log(Ca/He) Calcium/Helium emission lines ratio N/A phys.abund;arith.ratio
log_Ca_err -log(Ca/He) Calcium/Helium emission lines ratio error N/A stat.error;phys.abund;arith.ratio
log_g log(g) Surface gravity log(cm/s**2) phys.gravity;meta.main
log_g_3D log(g)[3D] N/A N/A phys.gravity;meta.modelled
log_gerr log(g_err) Surface gravity error log(cm/s**2) stat.error;phys.gravity;meta.main
log_gerr_3D log(g_err)[3D] N/A N/A stat.error;phys.gravity;meta.modelled
mass Mass Calculated mass solMass phys.mass
mass_err Mass error Mass uncertainty solMass stat.error;phys.mass
pdf Plate-MJD-Fiber SDSS object/observation identifier N/A meta.id;meta.main
pm Proper Motion SDSS proper motion mas/yr pos.pm
r mag_r (psf) SDSS r band PSF magnitude mag phot.mag;em.opt.R
r_err mag_r uncertainty SDSS r band uncertainty mag stat.error;phot.mag;em.opt.R
raj2000 RA Right ascension deg pos.eq.ra;meta.main
snr SNR g-band g-band signal-to-noise ratio N/A stat.snr;phot.flux;em.opt.B
T_eff Temp eff Effective Temperature K phys.temperature.effective;meta.main
T_eff_3D Temp eff[3D] Temperature (convective model) for pure DAs and DBs K phys.temperature;meta.modelled
T_err Temp error Error effective temperature K stat.error;phys.temperature.effective;meta.main
T_err_3D Temp error[3D] Error temperature (convective model) K stat.error;phys.temperature;meta.modelled
u mag_u (psf) SDSS u band PSF magnitude mag phot.mag;em.opt.U
u_err mag_u uncertainty SDSS u band uncertainty mag stat.error;phot.mag;em.opt.U
z mag_z (psf) SDSS z band PSF magnitude mag phot.mag;em.opt.I
z_err mag_z uncertainty SDSS z band uncertainty mag stat.error;phot.mag;em.opt.I

VOTable Output Fields

The following fields are available in VOTable output. The verbosity level is a number intended to represent the relative importance of the field on a scale of 1 to 30. The services take a VERB argument. A field is included in the output if their verbosity level is less or equal VERB*10.

NameTable Head DescriptionUnitUCD Verb. Level
raj2000 RA Right ascension deg pos.eq.ra;meta.main 1
decj2000 Dec Declination deg pos.eq.dec;meta.main 1
u mag_u (psf) SDSS u band PSF magnitude mag phot.mag;em.opt.U 1
u_err mag_u uncertainty SDSS u band uncertainty mag stat.error;phot.mag;em.opt.U 1
g mag_g (psf) SDSS g band PSF magnitude mag phot.mag;em.opt.B 1
g_err mag_g uncertainty SDSS g band uncertainty mag stat.error;phot.mag;em.opt.B 1
r mag_r (psf) SDSS r band PSF magnitude mag phot.mag;em.opt.R 1
r_err mag_r uncertainty SDSS r band uncertainty mag stat.error;phot.mag;em.opt.R 1
i mag_i (psf) SDSS i band PSF magnitude mag phot.mag;em.opt.I 1
i_err mag_i uncertainty SDSS i band uncertainty mag stat.error;phot.mag;em.opt.I 1
z mag_z (psf) SDSS z band PSF magnitude mag phot.mag;em.opt.I 1
z_err mag_z uncertainty SDSS z band uncertainty mag stat.error;phot.mag;em.opt.I 1
pm Proper Motion SDSS proper motion mas/yr pos.pm 1
T_eff Temp eff Effective Temperature K phys.temperature.effective;meta.main 1
T_err Temp error Error effective temperature K stat.error;phys.temperature.effective;meta.main 1
log_g log(g) Surface gravity log(cm/s**2) phys.gravity;meta.main 1
log_gerr log(g_err) Surface gravity error log(cm/s**2) stat.error;phys.gravity;meta.main 1
humanID classification Human clssification N/A meta.code.class 1
snr SNR g-band g-band signal-to-noise ratio N/A stat.snr;phot.flux;em.opt.B 20
T_eff_3D Temp eff[3D] Temperature (convective model) for pure DAs and DBs K phys.temperature;meta.modelled 20
T_err_3D Temp error[3D] Error temperature (convective model) K stat.error;phys.temperature;meta.modelled 20
log_g_3D log(g)[3D] N/A N/A phys.gravity;meta.modelled 20
log_gerr_3D log(g_err)[3D] N/A N/A stat.error;phys.gravity;meta.modelled 20
mass Mass Calculated mass solMass phys.mass 20
mass_err Mass error Mass uncertainty solMass stat.error;phys.mass 20
log_Ca -log(Ca/He) Calcium/Helium emission lines ratio N/A phys.abund;arith.ratio 20
log_Ca_err -log(Ca/He) Calcium/Helium emission lines ratio error N/A stat.error;phys.abund;arith.ratio 20
log_C -log(C/He) Carbon/Helium emission lines ratio N/A phys.abund;arith.ratio 20
log_C_err -log(C/He) Carbon/Helium emission lines ratio error N/A stat.error;phys.abund;arith.ratio 20
pdf Plate-MJD-Fiber SDSS object/observation identifier N/A meta.id;meta.main 20

Citation Info

VOResource XML (that's something exclusively for VO nerds)