All names: SDSS J093759.52+091653.30, SDSS J093759.52+091653.3, GALEX J093759.5+091653, SDSS J093759.51+091653.2, Gaia DR2 588388220081897984, SDSS J093759.52+091653.2, USNO-B1.0 0992-00188392, Gaia EDR3 588388220081897984, SDSS J093759.51+091653.0, WD 0935+095, Gaia DR3 588388220081897984
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Stilism | Koester & Kepler 2015 | Eisenstein et al. 2006 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 37 59.53 (0.3) | 09 37 59.52 | 09 37 59.52 | 09 37 59.52 (0.3) | 09 37 59.21 | 09 37 59.52 | |||||||
| Declination | 09 16 53.04 (0.2) | 09 16 53.20 | 09 16 53.22 | 09 16 53.26 (0.2) | 09 16 51.60 | 09 16 53.27 | |||||||
| Spectral type | DB | DB | DB | DB | DB | DB+MS | |||||||
| Effective temperature | [K] | 31766.0 (977) | 31847.0 | 29494.0 (470) | 31500.0 (400) | 29099.0 (689) | |||||||
| log(g) | [cgs] | 8.04 (0.1) | 8.01 | 7.90 (0.06) | 8.10 (0.07) | 8.22 (0.07) | |||||||
| Mass | [M☉] | 0.64 (0.06) | 0.622 | 0.738 (0.04) | |||||||||
| log(Luminosity) | [L☉] | -0.83 (0.09) | |||||||||||
| Cooling age | [Gyr] | 0.0083 (0.0009) | |||||||||||
| log(H/He) | <-3.571 | <-2.88 | |||||||||||
| log(C/He) | |||||||||||||
| log(Ca/He) | <-4.0 | ||||||||||||
| 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] | 2.01 (0.2) | 2.01 (0.2) | ||||||||||
| Distance | [pc] | 498.73 (57) | 515.00 | 498.73 (57) | |||||||||
| Composition | He | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 14.23752429 (0.3) | 14.238 (0.3) | ||||||||||
| Proper motion (declination) | [mas/yr] | -13.3232067 (0.3) | -13.323 (0.3) | ||||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | WDMS | ||||||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | |||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 18.33 (0.01) | 18.33 (0.02) | 18.33 (0.01) | 18.33 | 18.34 (0.02) | ||||||||
| g magnitude | 18.51 (0.007) | 18.52 (0.02) | 18.51 (0.007) | 18.52 | 18.53 (0.02) | ||||||||
| r magnitude | 18.87 (0.01) | 18.85 (0.02) | 18.87 (0.01) | 18.85 | 18.86 (0.02) | ||||||||
| i magnitude | 19.20 (0.02) | 19.18 (0.03) | 19.20 (0.02) | 19.19 | 19.19 (0.03) | ||||||||
| z magnitude | 19.31 (0.07) | 19.31 (0.07) | 19.30 (0.07) | 19.31 | 19.31 (0.07) | ||||||||
| G magnitude | 18.71 (0.02) | 18.71 (0.003) | |||||||||||
| BP magnitude | 18.63 (0.02) | ||||||||||||
| RP magnitude | 19.14 (0.08) | ||||||||||||
| Pan g magnitude | 18.55 (0.006) | ||||||||||||
| Pan r magnitude | 18.90 (0.008) | ||||||||||||
| Pan i magnitude | 19.21 (0.006) | ||||||||||||
| Pan z magnitude | 19.48 (0.02) | ||||||||||||
| Pan y magnitude | 19.59 (0.03) | ||||||||||||
| E(B-V) | 0.026 | ||||||||||||
* 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.