All names: WD 0736+239, Gaia DR2 867440427218037120, WIRED J073928.55+234727.8, LAMOST J073928.54+234727.4, Gaia DR3 867440427218037120, Gaia EDR3 867440427218037120, WDJ073928.55+234727.99, SDSS J073928.55+234727.8, SDSS J073928.54+234727.8, J0739+2347, SDSS J073928.55+234727.9
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | Caron et al. 2023 | Kilic et al. 2020 | MWDD H | Gaia DR2 | Stilism | Guo et al. 2015 | Tremblay et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 07 39 28.54 (0.08) | 07 39 28.55 | 07 39 28.54 (0.1) | 07 39 28.54 | 07 39 28.55 (0.08) | 07 39 28.54 | 07 39 28.55 | 07 39 28.61 | 07 39 28.55 | ||||||||||
Declination | 23 47 27.36 (0.07) | 23 47 27.87 | 23 47 27.38 (0.09) | 23 47 27.36 | 23 47 27.99 (0.07) | 23 47 27.38 | 23 47 27.89 | 23 47 22.56 | 23 47 27.90 | ||||||||||
Spectral type | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA_auto | DA | DA | DA | ||||||
Effective temperature | [K] | 8470.0 (88) | 8613.0 (71) | 8470.0 (88) | 8373.0 | 8440.0 (40) | 8421.0 (139) | 8629.0 (28) | 8336.0 (30) | ||||||||||
log(g) | [cgs] | 7.96 (0.02) | 8.00 (0.02) | 7.96 (0.02) | 7.94 | 8.15 (0.06) | 7.95 (0.03) | 8.36 (0.05) | 7.97 (0.05) | ||||||||||
Mass | [M☉] | 0.574 (0.02) | 0.599 (0.01) | 0.575 (0.02) | 0.562 | 0.69 (0.04) | 0.568 (0.03) | 0.58 (0.03) | |||||||||||
log(Luminosity) | [L☉] | ||||||||||||||||||
Cooling age | [Gyr] | 0.9300 | 0.8796 | 1.1749 | |||||||||||||||
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] | 11.17 (0.1) | 11.19 (0.1) | 11.19 (0.1) | 11.17 | 11.17 (0.1) | 11.19 (0.1) | ||||||||||||
Distance | [pc] | 89.49 (0.8) | 89.37 (1) | 89.39 (1) | 89.49 | 89.49 (0.8) | 89.39 (1) | ||||||||||||
Composition | H | H | H | H | |||||||||||||||
Proper motion (right ascension) | [mas/yr] | -9.911874226 (0.1) | -10.06130308 (0.2) | -9.912 (0.1) | -10.061 | -10.0 | |||||||||||||
Proper motion (declination) | [mas/yr] | -39.26584345 (0.08) | -39.31271232 (0.2) | -39.266 (0.07) | -39.313 | -41.8 | |||||||||||||
Variability | |||||||||||||||||||
Magnetic | |||||||||||||||||||
Bd | [MG] | ||||||||||||||||||
Infrared excess (disk) | |||||||||||||||||||
Binarity | |||||||||||||||||||
B magnitude | |||||||||||||||||||
V magnitude | |||||||||||||||||||
R magnitude | |||||||||||||||||||
I magnitude | |||||||||||||||||||
J magnitude | 17.14 (0.01) | 17.14 (0.01) | |||||||||||||||||
H magnitude | 17.09 (0.06) | 17.09 (0.06) | |||||||||||||||||
K magnitude | 16.97 (0.07) | 16.98 (0.07) | |||||||||||||||||
u magnitude | 17.93 (0.01) | 17.92 (0.01) | 17.93 (0.01) | 17.96 (0.01) | 17.95 (0.02) | 17.95 | 17.96 (0.02) | ||||||||||||
g magnitude | 17.54 (0.005) | 17.54 (0.005) | 17.52 (0.005) | 17.51 (0.02) | 17.51 | 17.51 (0.02) | |||||||||||||
r magnitude | 17.50 (0.005) | 17.50 (0.005) | 17.50 (0.005) | 17.50 (0.01) | 17.50 | 17.50 (0.01) | |||||||||||||
i magnitude | 17.53 (0.006) | 17.54 (0.006) | 17.57 (0.007) | 17.57 (0.01) | 17.57 | 17.57 (0.01) | |||||||||||||
z magnitude | 17.63 (0.02) | 17.63 (0.02) | 17.62 (0.02) | 17.62 (0.03) | 17.62 | 17.62 (0.03) | |||||||||||||
G magnitude | 17.46 (0.01) | 17.48 | 17.46 | 17.46 (0.003) | 17.48 | ||||||||||||||
BP magnitude | 17.56 (0.01) | 17.53 | 17.53 | ||||||||||||||||
RP magnitude | 17.27 (0.01) | 17.25 | 17.25 | ||||||||||||||||
Pan g magnitude | 17.54 (0.009) | 17.54 (0.008) | |||||||||||||||||
Pan r magnitude | 17.51 (0.004) | 17.51 (0.003) | |||||||||||||||||
Pan i magnitude | 17.59 (0.005) | 17.59 (0.005) | |||||||||||||||||
Pan z magnitude | 17.68 (0.01) | 17.68 (0.01) | |||||||||||||||||
Pan y magnitude | 17.74 (0.01) | 17.74 (0.02) | |||||||||||||||||
E(B-V) | 0.002 |
* 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.