All names: SDSSJ173404.35+072653.8, SDSS J173404.35+072653.8, TIC 302918854, Gaia DR3 4486976905642430976, Gaia EDR3 4486976905642430976, GALEX J173404.3+072653, SDSS J173404.35+072653.80, Gaia DR2 4486976905642430976, 2MASS J17340434+0726537, SDSS J173404.34+072653.8
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 17 34 04.35 (0.03) | 17 34 04.35 | 17 34 04.35 | 17 34 04.35 (0.05) | 17 34 04.35 (0.03) | ||||
| Declination | 07 26 53.71 (0.02) | 07 26 53.81 | 07 26 53.80 | 07 26 53.71 (0.04) | 07 26 53.83 (0.02) | ||||
| Spectral type | sdB | sdB | sdB3He | ||||||
| Effective temperature | [K] | 20029.0 (1121) | 21912.0 (154) | ||||||
| log(g) | [cgs] | 4.93 (0.2) | 5.05 (0.02) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.61 (0.04) | 0.47 (0.06) | 0.47 (0.06) | 0.61 (0.04) | ||||
| Distance | [pc] | 1648.95 (99) | 2144.08 (291) | 2144.02 (291) | 1649.08 (99) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -4.662153436 (0.03) | -4.69 (0.1) | -4.690063618 (0.1) | -4.662 (0.03) | ||||
| Proper motion (declination) | [mas/yr] | -7.670025044 (0.03) | -7.518 (0.09) | -7.517619004 (0.09) | -7.67 (0.03) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 15.59 (0.07) | 15.59 (0.07) | |||||||
| H magnitude | 15.83 (0.2) | 15.83 (0.2) | |||||||
| K magnitude | 15.52 (0.2) | 15.52 (0.2) | |||||||
| u magnitude | 15.49 (0.005) | 15.49 (0.005) | 15.47 (0.02) | 15.49 (0.005) | |||||
| g magnitude | 15.30 (0.004) | 15.30 (0.004) | 15.32 (0.005) | 15.30 (0.004) | |||||
| r magnitude | 15.57 (0.004) | 15.57 (0.004) | 15.56 (0.005) | 15.56 (0.004) | |||||
| i magnitude | 15.80 (0.005) | 15.80 (0.005) | 15.80 (0.01) | 15.80 (0.005) | |||||
| z magnitude | 16.01 (0.007) | 16.01 (0.007) | 16.02 (0.01) | 16.01 (0.007) | |||||
| G magnitude | 15.43 (0.002) | 15.45 (0.0008) | 15.45 | 15.43 (0.003) | |||||
| BP magnitude | 15.40 (0.002) | 15.37 (0.009) | 15.37 | ||||||
| RP magnitude | 15.49 (0.002) | 15.48 (0.002) | 15.48 | ||||||
| Pan g magnitude | 15.35 (0.006) | 15.35 (0.006) | |||||||
| Pan r magnitude | 15.58 (0.004) | 15.58 (0.004) | |||||||
| Pan i magnitude | 15.83 (0.002) | 15.83 (0.002) | |||||||
| Pan z magnitude | 16.01 (0.002) | 16.01 (0.002) | |||||||
| Pan y magnitude | 16.14 (0.005) | 16.14 (0.005) | |||||||
| E(B-V) | 0.150 | ||||||||
* 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.