All names: SDSS J150939.97+215015.6, TIC 351345015, USNO-B1.0 1118-00272856, LAMOST J150940.02+215014.0, J1509+2150, Gaia EDR3 1261751715280478848, GALEX J150940.0+215014, PG 1507+220, WD 1507+220, SDSS J150939.97+215015.5, WDJ150939.99+215015.77, Gaia DR2 1261751715280478848, Gaia DR3 1261751715280478848, 2MASS J15093999+2150158
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Kilic et al. 2020 | MWDD H | Gaia DR2 | Stilism | Guo et al. 2015 | Gianninas et al. 2011 | Koester et al. 2009 | Liebert et al. 2005 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 15 09 39.91 (0.03) | 15 09 39.91 (0.04) | 15 09 39.91 | 15 09 39.99 (0.03) | 15 09 39.91 | 15 09 40.06 | ||||||||||
Declination | 21 50 15.27 (0.03) | 21 50 15.29 (0.03) | 21 50 15.27 | 21 50 15.77 (0.03) | 21 50 15.29 | 21 50 08.52 | ||||||||||
Spectral type | DA | DA | DA | DA | DA | DA | DA2.5 | DA3 | ||||||||
Effective temperature | [K] | 20357.0 (216) | 20357.0 (216) | 18494.0 | 20540.0 (331) | 19872.0 (27) | 19340.0 (312) | 19496.0 (226) | ||||||||
log(g) | [cgs] | 7.95 (0.009) | 7.95 (0.009) | 7.84 | 7.91 (0.05) | 7.75 (0.005) | 7.91 (0.05) | 7.90 (0.01) | ||||||||
Mass | [M☉] | 0.598 (0.007) | 0.596 (0.007) | 0.536 | 0.58 (0.03) | 0.57 (0.03) | 0.567 (0.008) | |||||||||
log(Luminosity) | [L☉] | -1.61 | ||||||||||||||
Cooling age | [Gyr] | 0.0680 | 0.0851 | |||||||||||||
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] | 13.87 (0.04) | 13.85 (0.04) | 13.87 | 13.87 (0.04) | 13.85 (0.04) | ||||||||||
Distance | [pc] | 72.09 (0.2) | 72.20 (0.2) | 78.00 | 75.00 | 72.09 | 72.09 (0.2) | 72.20 (0.2) | ||||||||
Composition | H | H | H | |||||||||||||
Proper motion (right ascension) | [mas/yr] | -73.20265924 (0.04) | -73.10880287 (0.08) | -73.203 (0.04) | -73.10880286 | |||||||||||
Proper motion (declination) | [mas/yr] | -31.1611599 (0.04) | -31.13205243 (0.08) | -31.161 (0.04) | -31.13205243 | |||||||||||
Variability | ||||||||||||||||
Magnetic | ||||||||||||||||
Bd | [MG] | |||||||||||||||
Infrared excess (disk) | ||||||||||||||||
Binarity | ||||||||||||||||
B magnitude | 15.00 | 15.00 | ||||||||||||||
V magnitude | 15.05 | |||||||||||||||
R magnitude | 15.00 | |||||||||||||||
I magnitude | ||||||||||||||||
J magnitude | 15.45 (0.01) | |||||||||||||||
H magnitude | 15.53 (0.02) | |||||||||||||||
K magnitude | 15.70 (0.06) | |||||||||||||||
u magnitude | 14.97 (0.005) | 14.80 (0.004) | ||||||||||||||
g magnitude | 14.94 (0.004) | 14.77 (0.003) | ||||||||||||||
r magnitude | 16.44 (0.01) | 15.15 (0.003) | ||||||||||||||
i magnitude | 15.54 (0.005) | 15.44 (0.004) | ||||||||||||||
z magnitude | 15.65 (0.007) | 15.74 (0.006) | ||||||||||||||
G magnitude | 14.98 (0.002) | 15.00 | 14.98 | 14.98 (0.003) | 15.00 | |||||||||||
BP magnitude | 14.90 (0.002) | 14.87 | 14.87 | |||||||||||||
RP magnitude | 15.16 (0.002) | 15.15 | 15.15 | |||||||||||||
Pan g magnitude | 14.83 (0.003) | |||||||||||||||
Pan r magnitude | 15.18 (0.001) | |||||||||||||||
Pan i magnitude | 15.47 (0.002) | |||||||||||||||
Pan z magnitude | 15.74 (0.003) | |||||||||||||||
Pan y magnitude | 15.91 (0.007) | |||||||||||||||
E(B-V) | 0.013 |
* 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.