All names: SDSS J150919.21+431344.0, Gaia DR2 1393611991567241216, WD 1507+434, Gaia EDR3 1393611991567241216, GALEX J150919.1+431344, SDSS J150919.21+431343.9, Gaia DR3 1393611991567241216, WD 1507+434.1, [HHD2009] SDSS J1509+4313, SDSS J150910.20+431343.9, SDSS J150919.20+431343.9
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 09 19.21 (0.3) | 15 09 19.21 | 15 09 19.21 (0.5) | 15 09 19.21 | 15 09 19.22 (0.3) | 15 09 19.22 | 15 09 09.65 | 15 09 19.21 | |||
| Declination | 43 13 43.85 (0.4) | 43 13 43.92 | 43 13 43.85 (0.6) | 43 13 43.90 | 43 13 43.97 (0.4) | 43 13 43.98 | 43 13 37.56 | 43 13 43.98 | |||
| Spectral type | DA+M | DA+dMe | DA+M | DA dM | DA+M | ||||||
| Effective temperature | [K] | 28064.0 (1902) | 9508.0 (143) | 9819.0 (201) | |||||||
| log(g) | [cgs] | 7.62 (0.3) | 8.96 (0.05) | 9.33 (0.2) | |||||||
| Mass | [M☉] | 0.46 (0.2) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 0.59 (0.4) | 0.42 (0.7) | 0.59 (0.4) | |||||||
| Distance | [pc] | 1692.41 (1241) | 2383.88 (3760) | 322.00 (21) | 1692.33 (1241) | ||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -10.89827619 (0.4) | -11.01312772 (1) | -10.898 (0.4) | -4.9 | ||||||
| Proper motion (declination) | [mas/yr] | -7.344874662 (0.5) | -6.553905532 (1) | -7.345 (0.5) | -15.1 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | WDMS | ||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 21.69 (0.1) | 20.11 | 20.09 (0.05) | 20.11 (0.05) | 20.11 | 20.07 (0.05) | |||||
| g magnitude | 20.14 (0.02) | 20.13 | 20.13 (0.02) | 20.13 (0.03) | 20.13 | 20.10 (0.03) | |||||
| r magnitude | 20.62 (0.03) | 20.54 | 20.55 (0.03) | 20.54 (0.04) | 20.54 | 20.53 (0.04) | |||||
| i magnitude | 20.75 (0.04) | 20.36 | 20.38 (0.03) | 20.36 (0.04) | 20.37 | 20.35 (0.04) | |||||
| z magnitude | 20.10 (0.09) | 20.09 | 20.11 (0.09) | 20.09 (0.09) | 20.09 | 20.07 (0.09) | |||||
| G magnitude | 20.21 (0.08) | 20.27 | 20.21 (0.006) | ||||||||
| BP magnitude | 20.27 (0.08) | 19.95 | |||||||||
| RP magnitude | 20.12 (0.09) | 19.69 | |||||||||
| Pan g magnitude | 20.16 (0.009) | ||||||||||
| Pan r magnitude | 20.47 (0.02) | ||||||||||
| Pan i magnitude | 20.38 (0.03) | ||||||||||
| Pan z magnitude | 20.19 (0.04) | ||||||||||
| Pan y magnitude | 19.70 (0.03) | ||||||||||
| E(B-V) | 0.022 | ||||||||||
* 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.