All names: Gaia DR2 6909543828739362432, WD 2104-070, WIRED J210702.29-064757.5, GALEX J210702.2-064757, [HHD2009] SDSS J2107-0647, 2MASS J21070228-0647574, SDSS J210702.30-064757.6, Gaia EDR3 6909543828740845056, SDSS J210702.29-064757.5, [SGR2010] J2107-0647, TIC 35606934
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | 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 | 21 07 02.31 (0.4) | 21 07 02.30 | 21 07 02.32 (1) | 21 07 02.29 | 21 07 02.32 (1) | 21 07 02.30 | 21 07 02.35 | 21 07 02.30 | |||||
| Declination | -06 47 57.46 (0.4) | -06 47 57.55 | -06 47 57.77 (0.8) | -06 47 57.52 | -06 47 57.77 (0.8) | -06 47 57.55 | -06 47 53.88 | -06 47 57.58 | |||||
| Spectral type | DA+M | DA+M | DA | DA+dM | DA+M | DA d | DA+M | ||||||
| Effective temperature | [K] | 32887.0 (702) | 31853.0 (613) | 33200.0 (680) | 7431.0 (56) | 6842.0 (87) | |||||||
| log(g) | [cgs] | 7.62 (0.1) | 7.60 (0.2) | 7.79 (0.1) | 8.38 (0.1) | 7.14 (0.2) | |||||||
| Mass | [M☉] | 0.48 (0.05) | 0.47 (0.07) | 0.55 (0.07) | |||||||||
| log(Luminosity) | [L☉] | -0.48 (0.1) | |||||||||||
| Cooling age | [Gyr] | 0.0054 (0.002) | 0.0074 | ||||||||||
| 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] | 2.15 (0.4) | |||||||||||
| Distance | [pc] | 464.14 (85) | 263.00 (42) | ||||||||||
| Composition | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 17.90997304 (0.6) | 9.0 (3) | 7.3 | |||||||||
| Proper motion (declination) | [mas/yr] | -6.29583705 (0.7) | -5.0 (3) | -3.0 | |||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | WDMS | WDMS | WDMS | ||||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 16.03 (0.08) | ||||||||||||
| H magnitude | 15.28 (0.09) | ||||||||||||
| K magnitude | 14.92 (0.1) | ||||||||||||
| u magnitude | 18.10 (0.01) | 18.06 | 18.05 (0.01) | 18.07 (0.02) | 18.07 | 18.08 (0.02) | |||||||
| g magnitude | 18.16 (0.007) | 18.18 | 18.15 (0.007) | 18.18 (0.01) | 18.18 | 18.18 (0.01) | |||||||
| r magnitude | 18.06 (0.007) | 18.08 | 18.05 (0.007) | 18.08 (0.01) | 18.08 | 18.07 (0.01) | |||||||
| i magnitude | 17.54 (0.007) | 17.57 | 17.54 (0.007) | 17.57 (0.01) | 17.57 | 17.56 (0.01) | |||||||
| z magnitude | 17.12 (0.01) | 17.12 | 17.12 (0.01) | 17.12 (0.02) | 17.12 | 17.10 (0.02) | |||||||
| G magnitude | 18.55 (0.02) | 18.39 | 18.39 (0.01) | ||||||||||
| BP magnitude | 18.15 (0.02) | 18.08 | |||||||||||
| RP magnitude | 17.16 (0.01) | 17.14 | |||||||||||
| Pan g magnitude | 18.19 (0.004) | ||||||||||||
| Pan r magnitude | 18.10 (0.004) | ||||||||||||
| Pan i magnitude | 17.58 (0.003) | ||||||||||||
| Pan z magnitude | 17.25 (0.004) | ||||||||||||
| Pan y magnitude | 17.04 (0.008) | ||||||||||||
| E(B-V) | 0.032 | ||||||||||||
* 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.