All names: LAMOST J083807.99+530254.3, 2MASS J08380803+5302540, Gaia DR3 1030205394083991168, SDSS J083807.99+530254.4, Gaia DR2 1030205394083991168, WIRED J083808.00+530254.3, SDSS J083808.00+530254.3, SDSS J083808.00+530254.4, Gaia EDR3 1030205394083991168, GALEX J083807.9+530254, TIC 142154333, SDSS J083807.99+530254.3, SDSS J083808.01+530254.2, WD 0834+532
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | 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 | 08 38 07.97 (0.6) | 08 38 08.01 | 08 38 07.98 (0.8) | 08 38 07.99 | 08 38 08.00 (0.6) | 08 38 08.00 | 08 38 07.92 | 08 38 07.99 | ||||
| Declination | 53 02 54.19 (0.6) | 53 02 54.29 | 53 02 54.20 (0.7) | 53 02 54.31 | 53 02 54.32 (0.6) | 53 02 54.36 | 53 02 52.44 | 53 02 54.36 | ||||
| Spectral type | DA+M | DA+M | D+dM3 | DA+M | DA+M | DA+M | ||||||
| Effective temperature | [K] | 45331.0 (3105) | 45624.0 (4972) | 6302.0 (6) | 6300.0 (2) | |||||||
| log(g) | [cgs] | 7.17 (0.3) | 7.63 (0.6) | 7.69 (0.4) | 5.02 (0.03) | |||||||
| Mass | [M☉] | 0.37 (0.08) | 0.53 (0.3) | |||||||||
| log(Luminosity) | [L☉] | 0.41 (0.2) | ||||||||||
| 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] | 1.42 (0.9) | 2.25 (1) | 1.42 (0.9) | ||||||||
| Distance | [pc] | 702.36 (423) | 443.91 (215) | 222.00 (21) | 702.35 (423) | |||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -14.58628402 (0.8) | -9.696 (1) | -14.586 (0.8) | -15.6 | |||||||
| Proper motion (declination) | [mas/yr] | -8.310766373 (0.8) | -3.844 (1) | -8.311 (0.8) | -4.8 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | WDMS | WDMS | |||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 16.51 (0.1) | |||||||||||
| H magnitude | 15.79 (0.1) | |||||||||||
| K magnitude | 15.64 (0.2) | |||||||||||
| u magnitude | 19.35 (0.03) | 19.37 | 19.36 (0.03) | 19.37 (0.04) | 19.36 | 19.37 (0.04) | ||||||
| g magnitude | 19.35 (0.01) | 19.41 | 19.39 (0.01) | 19.41 (0.02) | 19.40 | 19.40 (0.02) | ||||||
| r magnitude | 18.91 (0.01) | 18.96 | 18.91 (0.01) | 18.96 (0.02) | 18.95 | 18.92 (0.02) | ||||||
| i magnitude | 18.30 (0.01) | 18.36 | 18.34 (0.01) | 18.36 (0.02) | 18.36 | 18.33 (0.02) | ||||||
| z magnitude | 17.87 (0.03) | 17.85 | 17.85 (0.02) | 17.85 (0.03) | 17.79 | 17.81 (0.03) | ||||||
| G magnitude | 18.89 (0.04) | 18.80 | 18.89 (0.01) | |||||||||
| BP magnitude | 19.25 (0.04) | 19.16 | ||||||||||
| RP magnitude | 17.88 (0.02) | 17.87 | ||||||||||
| Pan g magnitude | 19.32 (0.01) | |||||||||||
| Pan r magnitude | 18.94 (0.009) | |||||||||||
| Pan i magnitude | 18.30 (0.004) | |||||||||||
| Pan z magnitude | 17.94 (0.008) | |||||||||||
| Pan y magnitude | 17.73 (0.01) | |||||||||||
| E(B-V) | 0.029 | |||||||||||
* 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.