All names: Gaia EDR3 800529952050222848, 2MASS J09393661+3734353, [HHD2009] SDSS J0939+3734, GALEX J093936.6+373434, WD 0936+378, SDSS J093936.64+373434.8, WISE J093936.63+373434.8, TIC 17189492, WISEA J093936.62+373434.8, Gaia DR2 800529952050222848, WIRED J093936.64+373434.8, LAMOST J093936.64+373434.8
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Tremblay et al. 2011 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 39 36.63 (1) | 09 39 36.64 | 09 39 36.63 (1) | 09 39 36.64 | 09 39 36.64 | 09 39 36.64 | 09 39 36.70 | 09 39 36.64 | ||||
| Declination | 37 34 34.64 (0.9) | 37 34 34.81 | 37 34 34.66 (1) | 37 34 34.79 | 37 34 34.81 | 37 34 34.81 | 37 34 30.00 | 37 34 34.82 | ||||
| Spectral type | DA+M | DA | DA+M | DA+M | DA dM | DA+M | ||||||
| Effective temperature | [K] | 15601.0 (296) | 12900.0 (290) | 9145.0 (48) | 9016.0 (34) | |||||||
| log(g) | [cgs] | 7.87 (0.07) | 8.29 (0.05) | 7.53 (0.1) | 6.96 (0.07) | |||||||
| Mass | [M☉] | 0.54 (0.04) | 0.78 (0.03) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.5012 | ||||||||||
| 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] | |||||||||||
| Distance | [pc] | 709.00 (96) | ||||||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -4.0 (3) | -4.1 | |||||||||
| Proper motion (declination) | [mas/yr] | -35.0 (3) | -33.2 | |||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | WDMS | WDMS | |||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 14.90 (0.04) | |||||||||||
| H magnitude | 14.35 (0.04) | |||||||||||
| K magnitude | 14.20 (0.06) | |||||||||||
| u magnitude | 18.25 (0.01) | 18.31 | 18.25 (0.01) | 18.31 (0.03) | 18.31 | 18.28 (0.03) | ||||||
| g magnitude | 17.83 (0.005) | 17.88 | 17.83 (0.005) | 17.88 (0.02) | 17.88 | 17.87 (0.02) | ||||||
| r magnitude | 17.70 (0.006) | 17.80 | 17.70 (0.006) | 17.80 (0.02) | 17.80 | 17.79 (0.02) | ||||||
| i magnitude | 16.90 (0.005) | 16.98 | 16.90 (0.005) | 16.98 (0.02) | 16.98 | 16.97 (0.02) | ||||||
| z magnitude | 16.21 (0.008) | 16.27 | 16.21 (0.008) | 16.27 (0.02) | 16.27 | 16.26 (0.02) | ||||||
| G magnitude | 17.67 (0.01) | 17.54 | ||||||||||
| BP magnitude | 17.84 (0.01) | 17.79 | ||||||||||
| RP magnitude | 16.43 (0.005) | 16.44 | ||||||||||
| Pan g magnitude | 17.88 (0.007) | |||||||||||
| Pan r magnitude | 17.81 (0.02) | |||||||||||
| Pan i magnitude | 16.97 (0.007) | |||||||||||
| Pan z magnitude | 16.39 (0.003) | |||||||||||
| Pan y magnitude | 16.10 (0.007) | |||||||||||
| E(B-V) | 0.018 | |||||||||||
* 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.