All names: SDSS J073445.11+302949.5, 2MASS J07344508+3029497, Gaia DR3 879823195888098560, UCAC4 603-042399, SDSSJ073445.11+302949.5, Gaia EDR3 879823195888098560, WISE J073445.11+302949.7, Gaia DR2 879823195888098560, LAMOST J073445.11+302949.5
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 07 34 45.12 (0.05) | 07 34 45.12 | 07 34 45.12 (0.05) | ||
| Declination | 30 29 49.48 (0.05) | 30 29 49.53 | 30 29 49.56 (0.05) | ||
| Spectral type | sdB | sdB/sdO | |||
| Effective temperature | [K] | 30340.0 (349) | |||
| log(g) | [cgs] | 5.64 (0.08) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.51 (0.06) | 0.53 (0.1) | 0.51 (0.06) | |
| Distance | [pc] | 1975.11 (234) | 1880.76 (342) | 1975.11 (234) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 1.878 (0.06) | 2.036 (0.1) | 1.878 (0.06) | |
| Proper motion (declination) | [mas/yr] | -4.615 (0.05) | -4.426 (0.1) | -4.615 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.60 (0.05) | ||||
| V magnitude | 15.85 (0.06) | ||||
| R magnitude | 15.95 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 16.36 (0.1) | 16.36 (0.1) | |||
| H magnitude | 16.79 (0.4) | 16.79 (0.4) | |||
| K magnitude | 15.88 | ||||
| u magnitude | 15.48 (0.004) | 15.45 (0.004) | |||
| g magnitude | 15.59 (0.003) | 15.66 (0.04) | |||
| r magnitude | 16.03 (0.003) | 16.06 (0.1) | |||
| i magnitude | 16.36 (0.004) | 16.34 (0.01) | |||
| z magnitude | 16.65 (0.009) | 16.67 (0.009) | |||
| G magnitude | 15.82 (0.003) | 15.85 (0.002) | 15.82 (0.003) | ||
| BP magnitude | 15.71 (0.004) | 15.65 (0.01) | |||
| RP magnitude | 16.06 (0.006) | 16.05 (0.004) | |||
| Pan g magnitude | 15.67 (0.003) | ||||
| Pan r magnitude | 16.05 (0.002) | ||||
| Pan i magnitude | 16.38 (0.002) | ||||
| Pan z magnitude | 16.62 (0.004) | ||||
| Pan y magnitude | 16.82 (0.006) | ||||
| E(B-V) | 0.039 | ||||
* 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.