All names: USNO-A2.0 0975-07000695, GALEX J123819.2+080309, SDSS J123819.28+080309.7, SDSS J123819.28+080309.70, 2MASS J12381926+0803094, WD 1235+083, SDSS J123819.28+080309.6, LBQS 1235+0819, TIC 399118733, Gaia EDR3 3710390365473650944, Gaia DR3 3710390365473650944, Gaia DR2 3710390365473650944
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Genest-Beaulieu & Bergeron 2019 (photometric) | MWDD HE | Gaia DR2 | Stilism | Koester & Kepler 2015 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 12 38 19.26 (0.06) | 12 38 19.28 | 12 38 19.26 (0.08) | 12 38 19.26 | 12 38 19.29 (0.06) | 12 38 19.20 | 12 38 19.28 | ||||||||
Declination | 08 03 09.97 (0.04) | 08 03 09.71 | 08 03 09.96 (0.05) | 08 03 09.97 | 08 03 09.69 (0.04) | 08 03 06.84 | 08 03 09.69 | ||||||||
Spectral type | DBA | DB | DBA | DB | DBA | DB | |||||||||
Effective temperature | [K] | 13980.0 | 13648.0 | 13690.0 | 14439.0 (31) | 14533.0 (204) | 14707.0 (60) | ||||||||
log(g) | [cgs] | 7.89 | 8.01 | 8.02 | 8.00 (0) | 8.11 (0.02) | 8.43 (0.04) | ||||||||
Mass | [M☉] | 0.526 | 0.595 | 0.598 | 0.651 (0.01) | ||||||||||
log(Luminosity) | [L☉] | ||||||||||||||
Cooling age | [Gyr] | 0.2707 | |||||||||||||
log(H/He) | -5.335 | -5.13 (0.1) | |||||||||||||
log(C/He) | |||||||||||||||
log(Ca/He) | <-8.84 | ||||||||||||||
log(Ca/H) | |||||||||||||||
log(N/He) | |||||||||||||||
log(O/He) | |||||||||||||||
log(Na/He) | |||||||||||||||
log(Mg/He) | |||||||||||||||
log(Al/He) | |||||||||||||||
log(Si/He) | |||||||||||||||
log(P/He) | |||||||||||||||
log(S/He) | |||||||||||||||
log(Cl/He) | |||||||||||||||
log(Sc/He) | |||||||||||||||
log(Ti/He) | |||||||||||||||
log(V/He) | |||||||||||||||
log(Cr/He) | |||||||||||||||
log(Mn/He) | |||||||||||||||
log(Fe/He) | |||||||||||||||
log(Co/He) | |||||||||||||||
log(Ni/He) | |||||||||||||||
log(Cu/He) | |||||||||||||||
log(Zn/He) | |||||||||||||||
log(Ga/He) | |||||||||||||||
log(Ge/He) | |||||||||||||||
log(Sr/He) | |||||||||||||||
Parallax | [mas] | 9.75 (0.07) | 9.69 (0.09) | 9.75 | 9.75 (0.07) | ||||||||||
Distance | [pc] | 102.53 (0.7) | 103.25 (1) | 108.00 | 102.53 | 102.53 (0.7) | |||||||||
Composition | He | ||||||||||||||
Proper motion (right ascension) | [mas/yr] | -24.53322121 (0.07) | -24.31364152 (0.2) | -24.533 (0.07) | |||||||||||
Proper motion (declination) | [mas/yr] | 17.35779348 (0.07) | 17.23696547 (0.1) | 17.358 (0.07) | |||||||||||
Variability | |||||||||||||||
Magnetic | |||||||||||||||
Bd | [MG] | ||||||||||||||
Infrared excess (disk) | |||||||||||||||
Binarity | |||||||||||||||
B magnitude | 16.20 (0.3) | ||||||||||||||
V magnitude | |||||||||||||||
R magnitude | 16.50 (0.3) | ||||||||||||||
I magnitude | |||||||||||||||
J magnitude | 16.45 (0.1) | ||||||||||||||
H magnitude | |||||||||||||||
K magnitude | |||||||||||||||
u magnitude | 16.40 (0.006) | 16.40 (0.006) | 16.39 (0.02) | ||||||||||||
g magnitude | 16.46 (0.004) | 16.46 (0.004) | 16.47 (0.02) | ||||||||||||
r magnitude | 16.71 (0.005) | 16.71 (0.005) | 16.72 (0.02) | ||||||||||||
i magnitude | 16.95 (0.006) | 16.95 (0.006) | 16.96 (0.01) | ||||||||||||
z magnitude | 17.16 (0.01) | 17.16 (0.01) | 17.16 (0.02) | ||||||||||||
G magnitude | 16.57 (0.002) | 16.59 | 16.57 | 16.57 (0.003) | |||||||||||
BP magnitude | 16.52 (0.002) | 16.49 | |||||||||||||
RP magnitude | 16.63 (0.006) | 16.63 | |||||||||||||
Pan g magnitude | 16.49 (0.004) | ||||||||||||||
Pan r magnitude | 16.72 (0.004) | ||||||||||||||
Pan i magnitude | 16.96 (0.005) | ||||||||||||||
Pan z magnitude | 17.17 (0.005) | ||||||||||||||
Pan y magnitude | 17.32 (0.007) | ||||||||||||||
E(B-V) | 0.005 |
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.