All names: SDSS J153450.85+354033.9, Gaia EDR3 1374533368881401728, GALEX J153450.8+354034, WD 1532+358, Gaia DR2 1374533368881401728, SDSS J153450.85+354034.1, SDSS J153450.84+354034.0, WDJ153450.85+354034.09, SDSS J153450.87+354033.7, Gaia DR3 1374533368881401728
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025b | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 34 50.88 (0.1) | 15 34 50.85 | 15 34 50.87 (0.4) | 15 34 50.88 | 15 34 50.85 (0.1) | 15 34 50.85 | 15 34 50.11 | 15 34 50.85 | |||||
| Declination | 35 40 33.69 (0.2) | 35 40 33.99 | 35 40 33.70 (0.4) | 35 40 33.69 | 35 40 34.08 (0.2) | 35 40 34.05 | 35 40 27.48 | 35 40 34.05 | |||||
| Spectral type | DQA | DQ | DQ | DQAhot | DQAhot | DQ_CI | hotDQ | ||||||
| Effective temperature | [K] | 17140.0 (507) | 17852.0 (2240) | 47592.0 (2247) | 44562.0 (1970) | ||||||||
| log(g) | [cgs] | 8.71 (0.05) | 8.75 (0.09) | 8.98 (0.03) | 9.97 (0.04) | ||||||||
| Mass | [M☉] | 1.041 (0.04) | 1.064 (0.06) | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | ||||||||||||
| log(H/He) | |||||||||||||
| log(C/He) | |||||||||||||
| log(Ca/He) | |||||||||||||
| log(Ca/H) | |||||||||||||
| Parallax | [mas] | 3.90 (0.2) | 4.04 (0.6) | 3.90 | 3.90 (0.2) | ||||||||
| Distance | [pc] | 256.18 (13) | 247.58 (35) | 256.18 | 256.17 (13) | ||||||||
| Composition | C | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 21.36887878 (0.2) | 21.96242067 (0.9) | 21.369 (0.2) | 25.0 | ||||||||
| Proper motion (declination) | [mas/yr] | -24.54273396 (0.3) | -25.23199766 (0.7) | -24.543 (0.3) | -23.8 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | |||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 18.74 (0.02) | 18.73 (0.02) | 18.74 (0.02) | 18.74 | 18.74 (0.02) | ||||||||
| g magnitude | 18.96 (0.009) | 18.96 (0.009) | 18.97 (0.02) | 18.97 | 18.97 (0.02) | ||||||||
| r magnitude | 19.34 (0.01) | 19.34 (0.01) | 19.34 (0.02) | 19.34 | 19.34 (0.02) | ||||||||
| i magnitude | 19.62 (0.02) | 19.62 (0.02) | 19.63 (0.02) | 19.63 | 19.63 (0.02) | ||||||||
| z magnitude | 19.91 (0.08) | 19.91 (0.08) | 19.89 (0.08) | 19.89 | 19.91 (0.08) | ||||||||
| G magnitude | 19.17 (0.02) | 19.17 (0.004) | 19.22 | 19.17 | 19.17 (0.004) | ||||||||
| BP magnitude | 19.07 (0.02) | 19.07 (0.02) | 19.01 | ||||||||||
| RP magnitude | 19.36 (0.05) | 19.36 (0.05) | 19.38 | ||||||||||
| Pan g magnitude | 19.02 (0.009) | 19.02 (0.009) | |||||||||||
| Pan r magnitude | 19.37 (0.006) | 19.37 (0.006) | |||||||||||
| Pan i magnitude | 19.66 (0.008) | 19.66 (0.008) | |||||||||||
| Pan z magnitude | 19.89 (0.02) | 19.89 (0.02) | |||||||||||
| Pan y magnitude | 20.18 (0.1) | 20.18 (0.1) | |||||||||||
| E(B-V) | 0.023 | ||||||||||||
* 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.