All names: Gaia DR2 3851162209271226368, SDSS J093906.51+035435.5, Gaia DR3 3851162209271226368, GALEX J093906.5+035436, Gaia EDR3 3851162209271226368
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 09 39 06.50 (0.4) | 09 39 06.51 | 09 39 06.50 (0.5) | 09 39 06.51 (0.4) | 09 39 06.51 | ||||||
Declination | 03 54 35.54 (0.3) | 03 54 35.51 | 03 54 35.54 (0.5) | 03 54 35.49 (0.3) | 03 54 35.48 | ||||||
Spectral type | DC_VERYHOT | DC_VERYHOT | DC | DC_VERYHOT | DB | ||||||
Effective temperature | [K] | 16376.0 | 18649.0 | 15686.0 (1421) | |||||||
log(g) | [cgs] | 7.17 | 7.40 | 9.93 (0.3) | |||||||
Mass | [M☉] | 0.286 | 0.332 | ||||||||
log(Luminosity) | [L☉] | ||||||||||
Cooling age | [Gyr] | 0.0638 | 0.0487 | ||||||||
log(H/He) | |||||||||||
log(C/He) | |||||||||||
log(Ca/He) | |||||||||||
log(Ca/H) | |||||||||||
Parallax | [mas] | 1.35 (0.3) | 1.23 (0.5) | 1.35 (0.3) | |||||||
Distance | [pc] | 740.27 (180) | 815.29 (328) | 740.25 (180) | |||||||
Composition | |||||||||||
Proper motion (right ascension) | [mas/yr] | -8.590190039 (0.4) | -10.92828005 (1) | -8.59 (0.4) | |||||||
Proper motion (declination) | [mas/yr] | 3.311273748 (0.3) | 1.345131172 (1) | 3.311 (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 | 19.03 (0.02) | 19.02 (0.02) | 19.01 (0.03) | ||||||||
g magnitude | 19.28 (0.01) | 19.28 (0.01) | 19.29 (0.02) | ||||||||
r magnitude | 19.67 (0.02) | 19.67 (0.02) | 19.68 (0.02) | ||||||||
i magnitude | 19.87 (0.02) | 19.87 (0.02) | 19.87 (0.03) | ||||||||
z magnitude | 20.20 (0.1) | 20.20 (0.1) | 20.20 (0.1) | ||||||||
G magnitude | 19.45 (0.03) | 19.51 | 19.45 (0.004) | ||||||||
BP magnitude | 19.47 (0.03) | 19.38 | |||||||||
RP magnitude | 19.62 (0.07) | 19.63 | |||||||||
Pan g magnitude | 19.32 (0.02) | ||||||||||
Pan r magnitude | 19.66 (0.01) | ||||||||||
Pan i magnitude | 19.97 (0.02) | ||||||||||
Pan z magnitude | 20.16 (0.03) | ||||||||||
Pan y magnitude | 20.22 (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.