All names: Gaia DR3 4567999535238106880, SDSS J171139.82+220152.9, GALEX J171139.8+220152, SDSS J171139.83+220152.9, J1711+2201, Gaia EDR3 4567999535238106880, WD 1709+220, Gaia DR2 4567999535238106880
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Coutu et al. 2019 | Gaia DR2 | Stilism | Dufour et al. 2007 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 17 11 39.84 (0.2) | 17 11 39.83 | 17 11 39.83 | 17 11 39.84 (0.2) | 17 11 39.84 | 17 11 39.83 (0.2) | 17 11 39.34 | |||||
Declination | 22 01 52.67 (0.2) | 22 01 52.91 | 22 01 52.94 | 22 01 52.68 (0.3) | 22 01 52.67 | 22 01 52.94 (0.2) | 22 01 49.80 | |||||
Spectral type | DZ | DZ | DC: | DZ | DZ5.5 | DZ | ||||||
Effective temperature | [K] | 9256.0 (340) | 9160.0 (350) | 9125.0 (553) | ||||||||
log(g) | [cgs] | 8.06 | 8.00 | 8.18 (0.1) | ||||||||
Mass | [M☉] | 0.6147 | 0.69 (0.1) | |||||||||
log(Luminosity) | [L☉] | |||||||||||
Cooling age | [Gyr] | 0.8300 | ||||||||||
log(H/He) | <-5.688 | <-4.0 | ||||||||||
log(C/He) | ||||||||||||
log(Ca/He) | -9.0225 (0.3) | -8.93 (0.2) | ||||||||||
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] | 4.08 (0.4) | 3.49 | 3.49 (0.5) | 4.08 | 4.08 (0.4) | ||||||
Distance | [pc] | 245.34 (23) | 286.37 (39) | 286.37 (39) | 286.00 | 245.34 | 245.34 (23) | |||||
Composition | He | He | ||||||||||
Proper motion (right ascension) | [mas/yr] | 15.18709626 (0.3) | 14.94359182 (0.6) | 15.187 (0.3) | ||||||||
Proper motion (declination) | [mas/yr] | -16.40816748 (0.3) | -16.46547531 (0.7) | -16.408 (0.3) | ||||||||
Variability | ||||||||||||
Magnetic | ||||||||||||
Bd | [MG] | |||||||||||
Infrared excess (disk) | ||||||||||||
Binarity | ||||||||||||
B magnitude | ||||||||||||
V magnitude | ||||||||||||
R magnitude | ||||||||||||
I magnitude | ||||||||||||
J magnitude | ||||||||||||
H magnitude | ||||||||||||
K magnitude | ||||||||||||
u magnitude | 20.15 (0.04) | 20.15 (0.04) | ||||||||||
g magnitude | 19.90 (0.01) | 19.90 (0.01) | ||||||||||
r magnitude | 19.96 (0.02) | 19.96 (0.02) | ||||||||||
i magnitude | 20.07 (0.03) | 20.07 (0.03) | ||||||||||
z magnitude | 20.28 (0.1) | 20.28 (0.1) | ||||||||||
G magnitude | 19.87 (0.04) | 19.93 | 19.87 | 19.87 (0.004) | ||||||||
BP magnitude | 19.99 (0.04) | 19.99 | ||||||||||
RP magnitude | 19.69 (0.05) | 19.72 | ||||||||||
Pan g magnitude | 19.89 (0.01) | |||||||||||
Pan r magnitude | 19.94 (0.01) | |||||||||||
Pan i magnitude | 20.11 (0.02) | |||||||||||
Pan z magnitude | 20.10 (0.03) | |||||||||||
Pan y magnitude | 20.42 (0.2) | |||||||||||
E(B-V) | 0.027 |
* 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.