All names: SDSS J083409.12+335333.1, GALEX J083409.1+335332, Gaia DR3 711308637905176448, SDSS J083409.10+335333.0, SDSS J083409.11+335332.8, Gaia DR2 711308637905176448, LAMOST J083409.11+335333.1, SDSS J083409.11+335333.0, WD 0831+340, Gaia EDR3 711308637905176448, SDSS J083409.11+335333.1
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Guo et al. 2015 | 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 | 08 34 09.12 (0.2) | 08 34 09.10 | 08 34 09.12 (0.3) | 08 34 09.12 | 08 34 09.11 (0.2) | 08 34 09.12 | 08 34 09.14 | 08 34 09.12 | ||||||
| Declination | 33 53 32.65 (0.2) | 33 53 33.09 | 33 53 32.67 (0.2) | 33 53 32.65 | 33 53 33.10 (0.2) | 33 53 33.10 | 33 53 29.04 | 33 53 33.10 | ||||||
| Spectral type | DA | DA | DA | DA | DA_auto | DA | DA | DA | ||||||
| Effective temperature | [K] | 16200.0 (590) | 15366.0 (1289) | 15493.0 (310) | 15919.0 (327) | |||||||||
| log(g) | [cgs] | 8.05 (0.1) | 8.12 (0.1) | 8.04 (0.07) | 8.08 (0.08) | |||||||||
| Mass | [M☉] | 0.65 (0.06) | 0.683 (0.1) | 0.657 (0.05) | ||||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 0.1905 | ||||||||||||
| 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] | 3.09 (0.2) | 3.11 (0.4) | 3.09 | 3.09 (0.2) | |||||||||
| Distance | [pc] | 323.65 (26) | 321.23 (39) | 323.65 | 323.65 (26) | |||||||||
| Composition | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | 4.839320998 (0.3) | 4.972868277 (0.6) | 4.839 (0.3) | 6.5 | |||||||||
| Proper motion (declination) | [mas/yr] | -27.95178729 (0.2) | -28.19819067 (0.4) | -27.952 (0.2) | -33.5 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | ||||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | ||||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | ||||||||||||||
| H magnitude | ||||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | 19.12 (0.02) | 19.12 (0.02) | 19.12 (0.03) | 19.12 | 19.13 (0.03) | |||||||||
| g magnitude | 18.89 (0.008) | 18.89 (0.008) | 18.87 (0.02) | 18.87 | 18.87 (0.02) | |||||||||
| r magnitude | 19.18 (0.01) | 19.18 (0.01) | 19.18 (0.02) | 19.18 | 19.17 (0.02) | |||||||||
| i magnitude | 19.41 (0.02) | 19.41 (0.02) | 19.43 (0.02) | 19.43 | 19.42 (0.02) | |||||||||
| z magnitude | 19.77 (0.07) | 19.77 (0.07) | 19.72 (0.07) | 19.71 | 19.71 (0.07) | |||||||||
| G magnitude | 19.04 (0.02) | 19.08 | 19.04 | 19.04 (0.004) | ||||||||||
| BP magnitude | 19.03 (0.02) | 19.05 | ||||||||||||
| RP magnitude | 19.16 (0.04) | 19.19 | ||||||||||||
| Pan g magnitude | 18.91 (0.005) | |||||||||||||
| Pan r magnitude | 19.18 (0.007) | |||||||||||||
| Pan i magnitude | 19.45 (0.009) | |||||||||||||
| Pan z magnitude | 19.67 (0.02) | |||||||||||||
| Pan y magnitude | 19.80 (0.06) | |||||||||||||
| 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.