All names: SDSS J080759.46+273823.8, SDSS J080759.47+273823.7, SDSS J080759.47+273823.6, Gaia DR3 683913863319321216, Gaia EDR3 683913863319321216, GALEX J080759.4+273823, Gaia DR2 683913863319321216, SDSS J080759.47+273823.68
Parameter | Unit | Gaia EDR3 | SDSS DR10 | Bedard et al. 2020 | MWDD H | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
---|---|---|---|---|---|---|---|---|---|
Right ascension | 08 07 59.46 (0.2) | 08 07 59.46 | 08 07 59.46 (0.2) | 08 07 59.46 (0.2) | |||||
Declination | 27 38 23.67 (0.1) | 27 38 23.85 | 27 38 23.68 (0.1) | 27 38 23.96 (0.1) | |||||
Spectral type | DA+M | DA+M1 | DA+M1 | DA | |||||
Effective temperature | [K] | 33647.0 (379) | 19431.0 | 36154.0 (480) | |||||
log(g) | [cgs] | 7.32 (0.07) | 6.67 | 7.40 (0.1) | |||||
Mass | [M☉] | 0.38 (0.02) | 0.21 | 0.479 (0.02) | |||||
log(Luminosity) | [L☉] | -0.23 (0.05) | |||||||
Cooling age | [Gyr] | 0.0008 (0.0004) | |||||||
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] | 1.20 (0.2) | 1.12 (0.3) | 1.20 (0.2) | |||||
Distance | [pc] | 836.24 (147) | 890.81 (227) | 836.26 (147) | |||||
Composition | H | H | |||||||
Proper motion (right ascension) | [mas/yr] | -0.909117353 (0.2) | -0.827795219 (0.4) | -0.909 (0.2) | |||||
Proper motion (declination) | [mas/yr] | -18.37356462 (0.1) | -18.06449812 (0.3) | -18.374 (0.1) | |||||
Variability | |||||||||
Magnetic | |||||||||
Bd | [MG] | ||||||||
Infrared excess (disk) | |||||||||
Binarity | |||||||||
B magnitude | |||||||||
V magnitude | |||||||||
R magnitude | |||||||||
I magnitude | |||||||||
J magnitude | |||||||||
H magnitude | |||||||||
K magnitude | |||||||||
u magnitude | 17.96 (0.01) | 18.02 (0.03) | 17.97 (0.01) | ||||||
g magnitude | 18.14 (0.006) | 18.26 (0.02) | 18.13 (0.006) | ||||||
r magnitude | 18.50 (0.009) | 18.69 (0.03) | 18.51 (0.009) | ||||||
i magnitude | 18.89 (0.02) | 19.08 (0.2) | 18.89 (0.01) | ||||||
z magnitude | 18.90 (0.05) | 19.12 (0.4) | 18.91 (0.05) | ||||||
G magnitude | 18.55 | 18.60 | 18.55 (0.005) | ||||||
BP magnitude | |||||||||
RP magnitude | |||||||||
Pan g magnitude | |||||||||
Pan r magnitude | |||||||||
Pan i magnitude | |||||||||
Pan z magnitude | |||||||||
Pan y magnitude | |||||||||
E(B-V) | 0.031 |
* 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.