All names: SDSS J072020.88+364706.3, Gaia DR2 898069106018965888, SDSS J072020.87+364706.3, KUV 07170+3653, LAMOST J072020.88+364706.3, LAMOST J072020.94+364707.4, Gaia DR3 898069106018965888, Gaia EDR3 898069106018965888, WD 0717+368, GALEX J072020.9+364706
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Guo et al. 2015 | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 07 20 20.89 (0.07) | 07 20 20.88 | 07 20 20.89 (0.1) | 07 20 20.88 | 07 20 20.89 | 07 20 20.88 (0.07) | 07 20 20.86 | 07 20 20.88 | |||||||
Declination | 36 47 06.13 (0.07) | 36 47 06.37 | 36 47 06.14 (0.1) | 36 47 06.32 | 36 47 06.13 | 36 47 06.44 (0.07) | 36 47 04.56 | 36 47 06.33 | |||||||
Spectral type | DA+M | DA+M | DA | DA | DA | DA2.0 | DA | DA | DA | ||||||
Effective temperature | [K] | 17646.0 | 23886.0 (247) | 27209.0 (376) | 25260.0 (492) | 22614.0 (734) | 24621.0 (180) | ||||||||
log(g) | [cgs] | 7.18 | 7.97 (0.04) | 7.92 (0.06) | 8.00 (0.07) | 7.48 (0.04) | 7.98 (0.02) | ||||||||
Mass | [M☉] | 0.294 | 0.62 (0.02) | 0.6 (0.03) | 0.63 (0.04) | 0.397 (0.02) | 0.622 (0.009) | ||||||||
log(Luminosity) | [L☉] | ||||||||||||||
Cooling age | [Gyr] | 0.0520 | |||||||||||||
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] | 3.50 (0.09) | 3.43 (0.1) | 3.50 | 3.50 (0.09) | ||||||||||
Distance | [pc] | 286.02 (7) | 291.76 (10) | 968.00 (93) | 196.00 | 286.02 | 286.02 (7) | ||||||||
Composition | H | H | |||||||||||||
Proper motion (right ascension) | [mas/yr] | 6.485952187 (0.09) | 6.339319277 (0.2) | 6.486 (0.09) | |||||||||||
Proper motion (declination) | [mas/yr] | -19.46507126 (0.08) | -19.38966307 (0.2) | -19.465 (0.08) | |||||||||||
Variability | |||||||||||||||
Magnetic | |||||||||||||||
Bd | [MG] | ||||||||||||||
Infrared excess (disk) | |||||||||||||||
Binarity | WDMS | ||||||||||||||
B magnitude | |||||||||||||||
V magnitude | 16.80 | ||||||||||||||
R magnitude | |||||||||||||||
I magnitude | |||||||||||||||
J magnitude | |||||||||||||||
H magnitude | |||||||||||||||
K magnitude | |||||||||||||||
u magnitude | 16.83 (0.007) | 16.85 | 16.83 (0.007) | 16.85 (0.02) | |||||||||||
g magnitude | 16.90 (0.004) | 16.90 | 16.89 (0.004) | 16.90 (0.01) | |||||||||||
r magnitude | 17.28 (0.006) | 17.29 | 17.27 (0.006) | 17.29 (0.01) | |||||||||||
i magnitude | 17.59 (0.007) | 17.62 | 17.59 (0.007) | 17.62 (0.02) | |||||||||||
z magnitude | 17.85 (0.02) | 17.85 | 17.85 (0.02) | 17.85 (0.03) | |||||||||||
G magnitude | 17.09 (0.01) | 17.11 | 17.09 | 17.09 (0.003) | |||||||||||
BP magnitude | 16.99 (0.01) | 16.94 | |||||||||||||
RP magnitude | 17.31 (0.009) | 17.28 | |||||||||||||
Pan g magnitude | 16.95 (0.002) | ||||||||||||||
Pan r magnitude | 17.30 (0.002) | ||||||||||||||
Pan i magnitude | 17.60 (0.003) | ||||||||||||||
Pan z magnitude | 17.84 (0.005) | ||||||||||||||
Pan y magnitude | 18.03 (0.01) | ||||||||||||||
E(B-V) | 0.019 |
* 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.