All names: SDSS J081654.35+354230.6, SDSS J081654.36+354230.6, WIRED J081654.35+354230.6, LAMOST J081654.35+354230.6, 2MASS J08165434+3542301, [HHD2009] SDSS J0816+3542, Gaia DR3 904463693847878912, Gaia EDR3 904463693847878912, GALEX J081654.3+354231, Gaia DR2 904463693847878912, TIC 139303538, SDSS J081654.34+354230.5, WD 0813+358
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Guo et al. 2015 | Tremblay et al. 2011 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 16 54.36 (0.1) | 08 16 54.35 | 08 16 54.36 (0.2) | 08 16 54.35 | 08 16 54.36 (0.1) | 08 16 54.36 | 08 16 53.74 | 08 16 54.36 | |||||
| Declination | 35 42 30.70 (0.1) | 35 42 30.59 | 35 42 30.70 (0.1) | 35 42 30.60 | 35 42 30.60 (0.1) | 35 42 30.64 | 35 42 24.12 | 35 42 30.64 | |||||
| Spectral type | DA+M | DA+M? | DA | DA+M | DA+M | DA dM | DA+M | ||||||
| Effective temperature | [K] | 22550.0 (775) | 24240.0 (700) | 8582.0 (60) | 8344.0 (70) | ||||||||
| log(g) | [cgs] | 8.07 (0.1) | 7.94 (0.1) | 8.44 (0.07) | 8.03 (0.1) | ||||||||
| Mass | [M☉] | 0.67 (0.07) | 0.6 (0.06) | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 0.0263 | |||||||||||
| 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] | 2.65 (0.2) | 2.67 (0.3) | 2.65 (0.2) | |||||||||
| Distance | [pc] | 376.99 (24) | 374.50 (37) | 639.00 (59) | 376.99 (24) | ||||||||
| Composition | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 0.928855729 (0.2) | 0.61377198 (0.3) | 0.929 (0.2) | 0.7 | ||||||||
| Proper motion (declination) | [mas/yr] | 6.002392144 (0.1) | 5.990175472 (0.2) | 6.002 (0.1) | 6.2 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | WDMS | WDMS | WDMS | ||||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 16.09 (0.09) | ||||||||||||
| H magnitude | 15.49 (0.1) | ||||||||||||
| K magnitude | 15.32 (0.2) | ||||||||||||
| u magnitude | 18.67 (0.02) | 18.62 | 18.67 (0.02) | 18.62 (0.02) | 18.62 | 18.64 (0.02) | |||||||
| g magnitude | 18.57 (0.008) | 18.57 | 18.57 (0.008) | 18.57 (0.03) | 18.57 | 18.58 (0.03) | |||||||
| r magnitude | 18.61 (0.009) | 18.60 | 18.60 (0.009) | 18.60 (0.02) | 18.60 | 18.61 (0.02) | |||||||
| i magnitude | 18.03 (0.008) | 18.05 | 18.03 (0.008) | 18.05 (0.02) | 18.06 | 18.06 (0.02) | |||||||
| z magnitude | 17.54 (0.01) | 17.47 | 17.54 (0.01) | 17.47 (0.03) | 17.47 | 17.49 (0.03) | |||||||
| G magnitude | 18.29 (0.03) | 18.30 | 18.29 (0.003) | ||||||||||
| BP magnitude | 18.63 (0.03) | 18.61 | |||||||||||
| RP magnitude | 17.61 (0.02) | 17.64 | |||||||||||
| Pan g magnitude | 18.60 (0.008) | ||||||||||||
| Pan r magnitude | 18.62 (0.006) | ||||||||||||
| Pan i magnitude | 18.07 (0.004) | ||||||||||||
| Pan z magnitude | 17.60 (0.008) | ||||||||||||
| Pan y magnitude | 17.37 (0.006) | ||||||||||||
| E(B-V) | 0.030 | ||||||||||||
* 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.