All names: TIC 457143712, 2MASS J03422164+0053468, SDSS J034221.63+005346.7, SDSS J034221.62+005346.7, SDSS J034221.55+005345.6, WISE J034221.62+005346.8, WISEA J034221.63+005346.7, Gaia DR2 3269909510415762048, WD 0339+007, Gaia DR3 3269909510415762048, SDSS J034221.58+005345.8, Gaia EDR3 3269909510415762048
| Parameter | Unit | Gaia EDR3 | 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 | 03 42 21.64 (0.1) | 03 42 21.63 | 03 42 21.64 (0.1) | 03 42 21.58 | 03 42 21.63 (0.1) | 03 42 21.56 | 03 42 21.53 | 03 42 21.58 | |||
| Declination | 00 53 46.70 (0.08) | 00 53 46.74 | 00 53 46.70 (0.09) | 00 53 45.82 | 00 53 46.76 (0.08) | 00 53 45.66 | 00 53 43.08 | 00 53 45.80 | |||
| Spectral type | DA+K | DA | DApec | DApec | DA+M | ||||||
| Effective temperature | [K] | 12536.0 (1306) | 19080.0 (630) | 23035.0 (684) | 23751.0 (537) | ||||||
| log(g) | [cgs] | 7.62 (0.2) | 7.88 (0.1) | 6.97 (0.08) | 6.99 (0.07) | ||||||
| Mass | [M☉] | 0.41 (0.1) | 0.56 (0.06) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.0741 | |||||||||
| 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] | 0.45 (0.1) | 0.65 (0.2) | 0.45 (0.1) | |||||||
| Distance | [pc] | 2215.87 (612) | 1532.14 (396) | 2215.82 (612) | |||||||
| Composition | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 2.100262186 (0.1) | 2.076501838 (0.3) | 2.1 (0.1) | |||||||
| Proper motion (declination) | [mas/yr] | -3.705133046 (0.1) | -3.991984381 (0.3) | -3.705 (0.1) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | |||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 15.95 (0.08) | ||||||||||
| H magnitude | 15.09 (0.1) | ||||||||||
| K magnitude | 14.96 (0.1) | ||||||||||
| u magnitude | 19.16 (0.02) | 19.39 | 21.27 (0.1) | 19.39 (0.04) | 18.99 | 19.45 (0.04) | |||||
| g magnitude | 18.55 (0.007) | 19.00 | 19.27 (0.01) | 19.00 (0.05) | 18.99 | 19.02 (0.05) | |||||
| r magnitude | 17.69 (0.006) | 19.36 | 17.94 (0.007) | 19.36 (0.3) | 19.37 (0.3) | ||||||
| i magnitude | 17.34 (0.006) | 19.76 | 17.50 (0.007) | 19.76 (0.8) | 19.75 (0.8) | ||||||
| z magnitude | 17.09 (0.01) | 19.17 | 17.30 (0.01) | 19.17 (0.5) | 19.16 (0.5) | ||||||
| G magnitude | 17.96 (0.03) | 17.99 | 17.96 (0.003) | ||||||||
| BP magnitude | 18.48 (0.03) | 18.46 | |||||||||
| RP magnitude | 17.09 (0.01) | 17.10 | |||||||||
| Pan g magnitude | |||||||||||
| Pan r magnitude | |||||||||||
| Pan i magnitude | |||||||||||
| Pan z magnitude | |||||||||||
| Pan y magnitude | |||||||||||
| E(B-V) | 0.109 | ||||||||||
* 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.