All names: SDSS J123410.37-022802.8, Gaia DR3 3683189405578704640, EQ J1234-0228, SDSS J123410.36-022802.7, SDSS J123410.37-022802.9, J1234-0228, Gaia EDR3 3683189405578704640, Gaia DR2 3683189405578704640, LAMOST J123410.36-022802.8, WD 1231-021, USNO-B1.0 0875-00322621, GALEX J123410.3-022803, SDSS J123410.36-022802.8
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Guo et al. 2015 | Gianninas et al. 2014 | Tremblay et al. 2011 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2004 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 12 34 10.35 (0.1) | 12 34 10.37 | 12 34 10.35 (0.2) | 12 34 10.37 (0.1) | 12 34 10.37 | 12 34 10.15 | 12 34 10.37 | ||||||||
Declination | -02 28 02.99 (0.09) | -02 28 02.81 | -02 28 02.98 (0.1) | -02 28 02.81 (0.09) | -02 28 02.80 | -02 28 01.92 | -02 28 02.89 | ||||||||
Spectral type | DA | DA | DA | DA | DA | DA | SD | DA | |||||||
Effective temperature | [K] | 15361.0 | 17800.0 (260) | 17740.0 (450) | 17114.0 (227) | 17308.0 (226) | |||||||||
log(g) | [cgs] | 6.41 | 6.61 (0.04) | 6.40 (0.08) | 6.30 (0.05) | 6.34 (0.05) | |||||||||
Mass | [M☉] | 0.174 | 0.229 | 0.17 (0.01) | |||||||||||
log(Luminosity) | [L☉] | ||||||||||||||
Cooling age | [Gyr] | 0.2850 (0.1) | 0.9550 | ||||||||||||
log(H/He) | |||||||||||||||
log(C/He) | |||||||||||||||
log(Ca/He) | |||||||||||||||
log(Ca/H) | -6.81 | ||||||||||||||
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] | 1.28 (0.1) | 1.33 (0.2) | 1.28 (0.1) | |||||||||||
Distance | [pc] | 783.21 (87) | 751.40 (122) | 766.00 (82) | 783.21 (87) | ||||||||||
Composition | H | H | H | ||||||||||||
Proper motion (right ascension) | [mas/yr] | -16.35705727 (0.2) | -15.38661019 (0.5) | -16.357 (0.2) | -2.5 | -5.0 | |||||||||
Proper motion (declination) | [mas/yr] | -11.19392795 (0.1) | -10.84383412 (0.3) | -11.194 (0.1) | -11.5 | -12.0 | |||||||||
Variability | |||||||||||||||
Magnetic | |||||||||||||||
Bd | [MG] | ||||||||||||||
Infrared excess (disk) | |||||||||||||||
Binarity | WDMS | ||||||||||||||
B magnitude | 17.70 | ||||||||||||||
V magnitude | |||||||||||||||
R magnitude | 18.40 | ||||||||||||||
I magnitude | |||||||||||||||
J magnitude | |||||||||||||||
H magnitude | |||||||||||||||
K magnitude | |||||||||||||||
u magnitude | 18.16 (0.01) | 18.16 (0.01) | 18.20 (0.02) | 18.19 | 18.19 (0.02) | ||||||||||
g magnitude | 17.84 (0.005) | 17.84 (0.005) | 17.86 (0.02) | 17.87 | 17.87 (0.02) | ||||||||||
r magnitude | 18.20 (0.007) | 18.20 (0.007) | 18.22 (0.02) | 18.22 | 18.22 (0.02) | ||||||||||
i magnitude | 18.41 (0.01) | 18.41 (0.01) | 18.43 (0.01) | 18.44 | 18.44 (0.01) | ||||||||||
z magnitude | 18.69 (0.04) | 18.69 (0.04) | 18.70 (0.04) | 18.70 | 18.70 (0.04) | ||||||||||
G magnitude | 18.04 (0.01) | 18.07 | 18.04 (0.003) | ||||||||||||
BP magnitude | 18.00 (0.01) | 17.96 | |||||||||||||
RP magnitude | 18.17 (0.02) | 18.15 | |||||||||||||
Pan g magnitude | 17.90 (0.004) | ||||||||||||||
Pan r magnitude | 18.21 (0.007) | ||||||||||||||
Pan i magnitude | 18.50 (0.008) | ||||||||||||||
Pan z magnitude | 18.73 (0.007) | ||||||||||||||
Pan y magnitude | 18.91 (0.03) | ||||||||||||||
E(B-V) | 0.025 |
* 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.