All names: WISE J074850.49+301945.1, TIC 4491335, WISEA J074850.49+301945.0, 2MASX J07485050+3019449, SDSS J074850.48+301944.8, WD 0745+304, 2MASS J07485048+3019450, SDSS J074850.48+301944.7
| Parameter | Unit | Ferrario et al. 2015 | Kulebi et al. 2009 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|
| Right ascension | 07 48 50.48 | 07 48 50.48 (70) | 07 48 50.71 | ||
| Declination | 30 19 44.80 | 30 19 45.05 (70) | 30 19 39.72 | ||
| Spectral type | DA | DAH | DAP2.3 | ||
| Effective temperature | [K] | 22000.0 | |||
| log(g) | [cgs] | 8.00 (0) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| 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] | ||||
| Composition | H | ||||
| Proper motion (right ascension) | [mas/yr] | ||||
| Proper motion (declination) | [mas/yr] | ||||
| Variability | |||||
| Magnetic | yes | yes | yes | ||
| Bd | [MG] | 6.75 (0.4) | 6.75 (0.4) | ||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 15.16 (0.1) | ||||
| H magnitude | 14.51 (0.2) | ||||
| K magnitude | 13.77 (0.2) | ||||
| u magnitude | 20.04 (0.1) | 17.39 | |||
| g magnitude | 18.45 (0.01) | 17.58 | |||
| r magnitude | 17.23 (0.008) | 17.87 | |||
| i magnitude | 16.66 (0.007) | 18.49 | |||
| z magnitude | 16.23 (0.01) | 18.56 | |||
| G magnitude | |||||
| BP magnitude | |||||
| RP magnitude | |||||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | |||||
* 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.