All names: SDSS J085544.28+241720.7, GALEX J085544.2+241721, Gaia DR3 689730962728343424, SDSS J085544.29+241720.8, Gaia EDR3 689730962728343424, Gaia DR2 689730962728343424
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Hardy et al. 2023a | MWDD H | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 08 55 44.27 (0.5) | 08 55 44.29 | 08 55 44.27 (0.7) | 08 55 44.30 (0.5) | 08 55 44.29 | ||||||
Declination | 24 17 20.64 (0.3) | 24 17 20.71 | 24 17 20.64 (0.4) | 24 17 20.72 (0.3) | 24 17 20.76 | ||||||
Spectral type | DA | DAH | DAH | DAH | DA | ||||||
Effective temperature | [K] | 9430.3 (314) | 9193.0 | 9144.0 (211) | |||||||
log(g) | [cgs] | 7.89 (0.2) | 7.82 | 7.63 (0.4) | |||||||
Mass | [M☉] | 0.5331385805237004 (0.2) | 0.499 | ||||||||
log(Luminosity) | [L☉] | ||||||||||
Cooling age | [Gyr] | 0.6016 | |||||||||
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] | 3.31 (0.6) | 2.63 (0.7) | 3.31 (0.6) | |||||||
Distance | [pc] | 302.17 (52) | 379.71 (107) | 302.17 (52) | |||||||
Composition | H | ||||||||||
Proper motion (right ascension) | [mas/yr] | -27.07276314 (0.6) | -28.57075447 (1) | -27.073 (0.6) | |||||||
Proper motion (declination) | [mas/yr] | -4.935555663 (0.6) | -4.315143231 (1) | -4.936 (0.6) | |||||||
Variability | |||||||||||
Magnetic | |||||||||||
Bd | [MG] | ||||||||||
Infrared excess (disk) | |||||||||||
Binarity | |||||||||||
B magnitude | |||||||||||
V magnitude | |||||||||||
R magnitude | |||||||||||
I magnitude | |||||||||||
J magnitude | |||||||||||
H magnitude | |||||||||||
K magnitude | |||||||||||
u magnitude | 20.69 (0.06) | 20.68 (0.06) | 20.63 (0.06) | ||||||||
g magnitude | 20.16 (0.02) | 20.16 (0.02) | 20.18 (0.02) | ||||||||
r magnitude | 20.22 (0.03) | 20.22 (0.03) | 20.28 (0.03) | ||||||||
i magnitude | 20.30 (0.04) | 20.30 (0.04) | 20.33 (0.04) | ||||||||
z magnitude | 20.25 (0.1) | 20.25 (0.1) | 20.26 (0.1) | ||||||||
G magnitude | 20.13 (0.08) | 20.19 | 20.13 (0.006) | ||||||||
BP magnitude | 20.37 (0.08) | 20.15 | |||||||||
RP magnitude | 20.00 (0.07) | 20.02 | |||||||||
Pan g magnitude | 20.12 (0.01) | ||||||||||
Pan r magnitude | 20.19 (0.01) | ||||||||||
Pan i magnitude | 20.33 (0.01) | ||||||||||
Pan z magnitude | 20.39 (0.04) | ||||||||||
Pan y magnitude | 19.51 (0.08) | ||||||||||
E(B-V) | 0.021 |
* 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.