All names: SDSS J003925.22+254823.7, Gaia DR3 2806866303095872768, WD 0036+255, LAMOST J003925.22+254823.7, 2MASS J00392523+2548236, Gaia DR2 2806866303095872768, TIC 25697814, SDSS J003925.22+254823.6, [HHD2009] SDSS J0039+2548, Gaia EDR3 2806866303095872768, GALEX J003925.2+254823, SDSS J003925.21+254823.6, WIRED J003925.22+254823.7
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 39 25.23 (0.07) | 00 39 25.22 | 00 39 25.23 (0.1) | 00 39 25.22 | 00 39 25.23 | 00 39 25.21 (0.07) | 00 39 25.08 | 00 39 25.22 | |||||
| Declination | 25 48 23.75 (0.05) | 25 48 23.65 | 25 48 23.75 (0.08) | 25 48 23.69 | 25 48 23.75 | 25 48 23.74 (0.05) | 25 48 22.32 | 25 48 23.73 | |||||
| Spectral type | DA+M | DA+M | DA | DA+M | DA1.5 | DA+M | DA+MS | ||||||
| Effective temperature | [K] | 35986.0 (327) | 35740.0 (334) | 22337.0 (635) | 36443.0 (264) | ||||||||
| log(g) | [cgs] | 7.82 (0.05) | 7.80 (0.06) | 7.27 (0.04) | 7.76 (0.04) | ||||||||
| Mass | [M☉] | 0.57 (0.02) | 0.57 (0.03) | 0.337 (0.01) | |||||||||
| log(Luminosity) | [L☉] | -0.45 (0.04) | |||||||||||
| Cooling age | [Gyr] | 0.0050 (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] | 2.94 (0.09) | 3.20 (0.1) | 2.94 | 2.94 (0.09) | ||||||||
| Distance | [pc] | 340.25 (11) | 312.38 (13) | 414.00 (19) | 340.25 | 340.25 (11) | |||||||
| Composition | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 14.46188256 (0.1) | 14.2656463 (0.2) | 14.462 (0.1) | |||||||||
| Proper motion (declination) | [mas/yr] | 0.400321404 (0.07) | 0.321074621 (0.2) | 0.4 (0.07) | |||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | WDMS | yes | WDMS | WDMS | |||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 16.59 (0.1) | ||||||||||||
| H magnitude | 16.00 (0.2) | ||||||||||||
| K magnitude | 15.82 (0.2) | ||||||||||||
| u magnitude | 16.83 (0.008) | 17.14 | 16.83 (0.008) | 17.14 | 16.78 (0.02) | ||||||||
| g magnitude | 17.09 (0.004) | 17.47 | 17.09 (0.004) | 17.47 | 17.10 (0.01) | ||||||||
| r magnitude | 17.50 (0.005) | 17.88 | 17.50 (0.005) | 17.88 | 17.49 (0.01) | ||||||||
| i magnitude | 17.53 (0.007) | 17.96 | 17.54 (0.007) | 17.96 | 17.57 (0.02) | ||||||||
| z magnitude | 17.36 (0.01) | 17.85 | 17.36 (0.01) | 17.85 | 17.44 (0.02) | ||||||||
| G magnitude | 17.34 (0.006) | 17.34 | 17.34 | 17.34 (0.003) | |||||||||
| BP magnitude | 17.18 (0.006) | 17.15 | |||||||||||
| RP magnitude | 17.20 (0.01) | 17.19 | |||||||||||
| Pan g magnitude | 17.15 (0.004) | ||||||||||||
| Pan r magnitude | 17.51 (0.004) | ||||||||||||
| Pan i magnitude | 17.59 (0.005) | ||||||||||||
| Pan z magnitude | 17.50 (0.005) | ||||||||||||
| Pan y magnitude | 17.41 (0.01) | ||||||||||||
| E(B-V) | 0.051 | ||||||||||||
* 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.