All names: SDSS J155035.20+402558.6, FBS 1548+406, GALEX J155035.2+402559, Gaia DR2 1383736109406869888, WIRED J155035.20+402558.6, SDSS J155035.16+402558.7, WD 1548+405, SDSS J155035.20+402558.5, SDSS J155035.21+402558.6, PG 1548+406, TIC 29267489, 2MASS J15503525+4025585, Gaia EDR3 1383736109406869888, FBS B 125, LAMOST J155035.20+402558.6, 2RXP J155035.3+402604, SDSS J155035.19+402558.6, Gaia DR3 1383736109406869888
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | Guo et al. 2015 | Gianninas et al. 2011 | Tremblay et al. 2011 | 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 50 35.15 (0.03) | 15 50 35.20 | 15 50 35.15 (0.04) | 15 50 35.15 | 15 50 35.21 (0.03) | 15 50 35.21 | 15 50 34.68 | 15 50 35.21 | ||||||||
| Declination | 40 25 58.86 (0.03) | 40 25 58.67 | 40 25 58.85 (0.04) | 40 25 58.86 | 40 25 58.63 (0.03) | 40 25 58.59 | 40 25 54.48 | 40 25 58.61 | ||||||||
| Spectral type | DA | DA | DA | DA | DA | DA.9 | DA_auto | DA2 | DA | DA | ||||||
| Effective temperature | [K] | 55472.0 (644) | 57231.0 (2728) | 55440.0 (1181) | 58570.0 (860) | 59574.0 (845) | 59086.0 (831) | |||||||||
| log(g) | [cgs] | 7.61 (0.04) | 8.17 (0.2) | 7.76 (0.07) | 7.59 (0.05) | 7.82 (0.05) | 7.74 (0.05) | |||||||||
| Mass | [M☉] | 0.54 (0.01) | 0.79 (0.08) | 0.6 (0.03) | 0.55 (0.02) | 0.596 (0.02) | ||||||||||
| log(Luminosity) | [L☉] | 0.49 (0.04) | ||||||||||||||
| Cooling age | [Gyr] | 0.0011 (0.0001) | 0.0013 | |||||||||||||
| 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] | 3.66 (0.04) | 3.75 (0.05) | 3.66 | 3.66 (0.04) | |||||||||||
| Distance | [pc] | 273.18 (3) | 266.86 (3) | 283.00 | 273.18 | 273.18 (3) | ||||||||||
| Composition | H | H | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -45.22667022 (0.04) | -45.39288382 (0.07) | -45.227 (0.04) | -39.5 | |||||||||||
| Proper motion (declination) | [mas/yr] | 14.07331572 (0.04) | 13.82360032 (0.1) | 14.073 (0.04) | 10.6 | |||||||||||
| Variability | ||||||||||||||||
| Magnetic | ||||||||||||||||
| Bd | [MG] | |||||||||||||||
| Infrared excess (disk) | ||||||||||||||||
| Binarity | ||||||||||||||||
| B magnitude | 15.61 | |||||||||||||||
| V magnitude | 15.89 | |||||||||||||||
| R magnitude | ||||||||||||||||
| I magnitude | ||||||||||||||||
| J magnitude | 16.38 (0.1) | |||||||||||||||
| H magnitude | 16.11 (0.06) | |||||||||||||||
| K magnitude | 16.01 (0.06) | |||||||||||||||
| u magnitude | 15.17 (0.004) | 15.17 (0.004) | 15.15 (0.02) | 15.15 | 15.17 (0.02) | |||||||||||
| g magnitude | 15.54 (0.003) | 15.54 (0.003) | 15.55 (0.02) | 15.55 | 15.54 (0.02) | |||||||||||
| r magnitude | 16.06 (0.004) | 16.07 (0.004) | 16.07 (0.01) | 16.07 | 16.07 (0.01) | |||||||||||
| i magnitude | 16.45 (0.004) | 16.45 (0.004) | 16.46 (0.01) | 16.47 | 16.46 (0.01) | |||||||||||
| z magnitude | 16.79 (0.01) | 16.79 (0.01) | 16.80 (0.02) | 16.81 | 16.80 (0.02) | |||||||||||
| G magnitude | 15.82 (0.002) | 15.83 | 15.82 | 15.82 (0.003) | ||||||||||||
| BP magnitude | 15.65 (0.002) | 15.59 | ||||||||||||||
| RP magnitude | 16.15 (0.003) | 16.15 | ||||||||||||||
| Pan g magnitude | 15.64 (0.006) | |||||||||||||||
| Pan r magnitude | 16.09 (0.004) | |||||||||||||||
| Pan i magnitude | 16.46 (0.002) | |||||||||||||||
| Pan z magnitude | 16.76 (0.006) | |||||||||||||||
| Pan y magnitude | 16.97 (0.01) | |||||||||||||||
| E(B-V) | 0.020 | |||||||||||||||
* 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.