All names: SDSS J150437.42+281331.3, Gaia DR2 1268876035232388224, SDSS J150437.41+281331.2, LAMOST J150437.42+281331.2, Gaia EDR3 1268876039528307328, SDSS J150437.42+281331.2, Gaia DR3 1268876039528307328, GALEX J150437.4+281331
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | Guo et al. 2015 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 04 37.43 (0.1) | 15 04 37.42 | 15 04 37.42 (0.1) | 15 04 37.42 (0.1) | 15 04 37.42 | ||||||
| Declination | 28 13 31.08 (0.1) | 28 13 31.29 | 28 13 31.09 (0.2) | 28 13 31.32 (0.1) | 28 13 31.28 | ||||||
| Spectral type | DA | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 47609.0 (1734) | 49606.0 (1514) | ||||||||
| log(g) | [cgs] | 7.23 (0.1) | 7.16 (0.1) | ||||||||
| Mass | [M☉] | 0.39 (0.04) | 0.465 (0.03) | ||||||||
| log(Luminosity) | [L☉] | 0.46 (0.1) | |||||||||
| Cooling age | [Gyr] | 0.0001 | |||||||||
| 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] | 0.91 (0.2) | 0.92 (0.3) | 0.91 (0.2) | |||||||
| Distance | [pc] | 1102.82 (193) | 1081.90 (313) | 1102.78 (193) | |||||||
| Composition | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 0.936131385 (0.1) | 0.61 (0.3) | 0.936 (0.1) | |||||||
| Proper motion (declination) | [mas/yr] | -15.00818491 (0.2) | -15.082 (0.5) | -15.008 (0.2) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 17.96 (0.01) | 17.96 (0.01) | 17.96 (0.02) | ||||||||
| g magnitude | 18.34 (0.007) | 18.34 (0.007) | 18.37 (0.03) | ||||||||
| r magnitude | 18.86 (0.01) | 18.86 (0.01) | 18.86 (0.02) | ||||||||
| i magnitude | 19.20 (0.01) | 19.20 (0.01) | 19.20 (0.02) | ||||||||
| z magnitude | 19.66 (0.07) | 19.66 (0.07) | 19.66 (0.07) | ||||||||
| G magnitude | 18.61 (0.01) | 18.65 | 18.61 (0.003) | ||||||||
| BP magnitude | 18.47 (0.01) | 18.37 | |||||||||
| RP magnitude | 18.93 (0.03) | 18.85 | |||||||||
| Pan g magnitude | 18.39 (0.003) | ||||||||||
| Pan r magnitude | 18.87 (0.01) | ||||||||||
| Pan i magnitude | 19.27 (0.008) | ||||||||||
| Pan z magnitude | 19.54 (0.03) | ||||||||||
| Pan y magnitude | 19.62 (0.06) | ||||||||||
| E(B-V) | 0.034 | ||||||||||
* 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.