All names: Gaia DR2 938351982245743360, Gaia DR3 938351982245743360, USNO-B1.0 1234-00155206, NLTT 16820, J0640+3327, GALEX J064033.5+332737, LP 254-13, WDJ064033.53+332737.95, LSPM J0640+3327, Gaia EDR3 938351982245743360, 0637+335
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | Leggett et al. 2018 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 06 40 33.58 (0.08) | 06 40 33.58 | 06 40 33.58 | 06 40 33.53 (0.08) | 06 40 33.58 | |||||||
Declination | 33 27 35.03 (0.07) | 33 27 35.13 | 33 27 35.03 | 33 27 37.96 (0.07) | 33 27 35.13 | |||||||
Spectral type | DC | DC5.7 | DZ | DC | ||||||||
Effective temperature | [K] | 8026.0 (49) | 8336.0 (276) | 8479.0 | 8191.0 | 7751.0 (109) | ||||||
log(g) | [cgs] | 8.08 (0.01) | 8.26 (0.1) | 8.29 | 8.20 | 8.05 (0.02) | ||||||
Mass | [M☉] | 0.623 (0.01) | 0.739 (0.1) | 0.78 | 0.704 | 0.609 (0.02) | ||||||
log(Luminosity) | [L☉] | |||||||||||
Cooling age | [Gyr] | 1.2900 | 1.5010 (0.4) | 1.4600 | 1.4120 | |||||||
log(H/He) | -3.8 | |||||||||||
log(C/He) | ||||||||||||
log(Ca/He) | ||||||||||||
log(Ca/H) | ||||||||||||
log(N/He) | ||||||||||||
log(O/He) | ||||||||||||
log(Na/He) | ||||||||||||
log(Mg/He) | ||||||||||||
log(Al/He) | ||||||||||||
log(Si/He) | ||||||||||||
log(P/He) | ||||||||||||
log(S/He) | ||||||||||||
log(Cl/He) | ||||||||||||
log(Sc/He) | ||||||||||||
log(Ti/He) | ||||||||||||
log(V/He) | ||||||||||||
log(Cr/He) | ||||||||||||
log(Mn/He) | ||||||||||||
log(Fe/He) | ||||||||||||
log(Co/He) | ||||||||||||
log(Ni/He) | ||||||||||||
log(Cu/He) | ||||||||||||
log(Zn/He) | ||||||||||||
log(Ga/He) | ||||||||||||
log(Ge/He) | ||||||||||||
log(Sr/He) | ||||||||||||
Parallax | [mas] | 15.46 (0.09) | 15.54 (0.1) | 15.76 (2) | 15.54 (0.1) | 15.46 | 15.46 (0.09) | 15.54 (0.1) | ||||
Distance | [pc] | 64.67 (0.4) | 64.35 (0.4) | 63.45 (6) | 64.35 (0.4) | 64.67 | 64.67 (0.4) | 64.35 (0.4) | ||||
Composition | He | |||||||||||
Proper motion (right ascension) | [mas/yr] | 33.84087467 (0.1) | 33.75081853 (0.2) | 33.841 (0.1) | 33.75081853 | |||||||
Proper motion (declination) | [mas/yr] | -182.5914692 (0.08) | -182.5552766 (0.1) | -182.591 (0.08) | -182.5552766 | |||||||
Variability | ||||||||||||
Magnetic | ||||||||||||
Bd | [MG] | |||||||||||
Infrared excess (disk) | ||||||||||||
Binarity | ||||||||||||
B magnitude | 17.30 | |||||||||||
V magnitude | ||||||||||||
R magnitude | 17.00 | |||||||||||
I magnitude | ||||||||||||
J magnitude | 16.97 (0.03) | |||||||||||
H magnitude | ||||||||||||
K magnitude | ||||||||||||
u magnitude | ||||||||||||
g magnitude | ||||||||||||
r magnitude | ||||||||||||
i magnitude | ||||||||||||
z magnitude | ||||||||||||
G magnitude | 17.21 (0.008) | 17.23 | 17.21 | 17.21 (0.003) | 17.23 | |||||||
BP magnitude | 17.33 (0.008) | 17.33 | 17.33 | |||||||||
RP magnitude | 17.00 (0.02) | 17.01 | 17.01 | |||||||||
Pan g magnitude | 17.31 (0.004) | 17.31 (0.004) | ||||||||||
Pan r magnitude | 17.26 (0.003) | 17.26 (0.002) | ||||||||||
Pan i magnitude | 17.34 (0.003) | 17.34 (0.003) | ||||||||||
Pan z magnitude | 17.47 (0.005) | 17.47 (0.006) | ||||||||||
Pan y magnitude | 17.51 (0.009) | 17.51 (0.01) | ||||||||||
E(B-V) | 0.001 |
* 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.