All names: Gaia DR2 4231249050982986880, SDSS J203845.42+005307.9, WD 2036+007, GALEX J203845.4+005305, Gaia EDR3 4231249050982986880, Gaia DR3 4231249050982986880, SDSS J203845.42+005307.8, SDSS J203845.41+005307.8
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 20 38 45.44 (0.3) | 20 38 45.42 | 20 38 45.44 (0.4) | 20 38 45.44 | 20 38 45.41 (0.3) | 20 38 45.42 | 20 38 45.07 | 20 38 45.42 | |||||
Declination | 00 53 07.67 (0.2) | 00 53 07.87 | 00 53 07.67 (0.3) | 00 53 07.67 | 00 53 07.89 (0.2) | 00 53 07.87 | 00 53 05.64 | 00 53 07.87 | |||||
Spectral type | DA | DA | DA+M | DA_auto | DA | DA+M | DA | ||||||
Effective temperature | [K] | 6610.0 | 6736.0 (255) | 7536.0 (117) | 6955.0 (141) | ||||||||
log(g) | [cgs] | 8.00 | 8.12 (0.1) | 8.22 (0.3) | 7.44 (0.3) | ||||||||
Mass | [M☉] | 0.589 | 0.662 (0.09) | ||||||||||
log(Luminosity) | [L☉] | ||||||||||||
Cooling age | [Gyr] | 1.7450 | |||||||||||
log(H/He) | |||||||||||||
log(C/He) | |||||||||||||
log(Ca/He) | |||||||||||||
log(Ca/H) | |||||||||||||
log(C/H) | |||||||||||||
log(N/H) | |||||||||||||
log(O/H) | |||||||||||||
log(Na/H) | |||||||||||||
log(Mg/H) | |||||||||||||
log(Al/H) | |||||||||||||
log(Si/H) | |||||||||||||
log(P/H) | |||||||||||||
log(S/H) | |||||||||||||
log(Sc/H) | |||||||||||||
log(Ti/H) | |||||||||||||
log(Cr/H) | |||||||||||||
log(Mn/H) | |||||||||||||
log(Fe/H) | |||||||||||||
log(Ni/H) | |||||||||||||
Parallax | [mas] | 6.48 (0.4) | 6.14 (0.5) | 6.48 | 6.48 (0.4) | ||||||||
Distance | [pc] | 154.38 (9) | 162.81 (12) | 154.38 | 154.38 (9) | ||||||||
Composition | H | ||||||||||||
Proper motion (right ascension) | [mas/yr] | 28.20211949 (0.4) | 28.38625007 (0.9) | 28.202 (0.4) | 26.9 | ||||||||
Proper motion (declination) | [mas/yr] | -14.06690985 (0.3) | -14.18970973 (0.6) | -14.067 (0.3) | -13.6 | ||||||||
Variability | |||||||||||||
Magnetic | |||||||||||||
Bd | [MG] | ||||||||||||
Infrared excess (disk) | |||||||||||||
Binarity | WDMS | ||||||||||||
B magnitude | |||||||||||||
V magnitude | |||||||||||||
R magnitude | |||||||||||||
I magnitude | |||||||||||||
J magnitude | |||||||||||||
H magnitude | |||||||||||||
K magnitude | |||||||||||||
u magnitude | 20.60 (0.06) | 20.61 (0.07) | 20.56 (0.06) | 20.56 | 20.58 (0.06) | ||||||||
g magnitude | 19.94 (0.02) | 19.94 (0.02) | 19.95 (0.02) | 19.94 | 19.95 (0.02) | ||||||||
r magnitude | 19.70 (0.02) | 19.70 (0.02) | 19.73 (0.02) | 19.72 | 19.73 (0.02) | ||||||||
i magnitude | 19.63 (0.02) | 19.63 (0.02) | 19.66 (0.02) | 19.65 | 19.65 (0.02) | ||||||||
z magnitude | 19.52 (0.07) | 19.52 (0.07) | 19.55 (0.07) | 19.54 | 19.53 (0.07) | ||||||||
G magnitude | 19.70 (0.05) | 19.74 | 19.70 | 19.70 (0.004) | |||||||||
BP magnitude | 19.96 (0.05) | 19.85 | |||||||||||
RP magnitude | 19.34 (0.04) | 19.36 | |||||||||||
Pan g magnitude | 19.92 (0.01) | ||||||||||||
Pan r magnitude | 19.72 (0.007) | ||||||||||||
Pan i magnitude | 19.66 (0.008) | ||||||||||||
Pan z magnitude | 19.65 (0.02) | ||||||||||||
Pan y magnitude | 19.69 (0.1) | ||||||||||||
E(B-V) | 0.024 |
* 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.