All names: GALEX J034038.8-002945, TIC 301620216, 2MASS J03403873-0029447, SDSS J034038.78-002945.6, SDSS J034038.78-002945.5, PSO J055.1619-00.4963, SDSS J034038.73-002944.8, SDSS J034038.76-002945.2, J0340-0029, WD 0338-006, Gaia DR3 3263484003117848832, Gaia EDR3 3263484003117848832, SDSS J034038.74-002944.8, Gaia DR2 3263484003117848832, WDJ034038.75-002944.93
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Caron et al. 2023 | Blouin et al. 2019 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Tremblay et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Kleinman et al. 2004 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 03 40 38.88 (0.06) | 03 40 38.78 | 03 40 38.88 (0.1) | 03 40 38.88 | 03 40 38.75 (0.06) | 03 40 38.88 | 03 40 38.76 | 03 40 38.21 | 03 40 38.74 | 03 40 38.74 | |||||||||
| Declination | -00 29 47.17 (0.05) | -00 29 45.59 | -00 29 47.10 (0.06) | -00 29 47.17 | -00 29 44.92 (0.05) | -00 29 47.10 | -00 29 45.21 | -00 29 40.92 | -00 29 44.83 | -00 29 44.84 | |||||||||
| Spectral type | DA | DA | DA | DA | DA7 | DA | DA | DA6.4 | DA | DA | |||||||||
| Effective temperature | [K] | 7311.0 (35) | 7065.0 (60) | 7099.0 | 6834.0 | 7170.0 (30) | 7293.0 (79) | 7768.0 (18) | 7052.0 (25) | 7859.0 (20) | |||||||||
| log(g) | [cgs] | 8.17 (0.01) | 8.10 (0.02) | 8.10 | 7.99 | 8.22 (0.06) | 8.18 (0.02) | 9.00 (0.007) | 7.89 (0.04) | 8.99 (0.03) | |||||||||
| Mass | [M☉] | 0.697 (0.009) | 0.65 (0.01) | 0.652 | 0.565 | 0.73 (0.04) | 0.707 (0.02) | ||||||||||||
| log(Luminosity) | [L☉] | ||||||||||||||||||
| Cooling age | [Gyr] | 1.8100 | 1.6920 (0.07) | 1.6750 | 1.6070 | 2.1380 | |||||||||||||
| 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] | 19.97 (0.08) | 19.62 (0.1) | 19.62 (0.1) | 19.62 (0.1) | 19.97 | 19.97 (0.08) | 19.62 (0.1) | |||||||||||
| Distance | [pc] | 50.07 (0.2) | 50.97 (0.3) | 50.96 (0.3) | 50.96 (0.3) | 50.07 | 50.07 (0.2) | 50.96 (0.3) | |||||||||||
| Composition | H | H | H | ||||||||||||||||
| Proper motion (right ascension) | [mas/yr] | 124.5417674 (0.07) | 124.5697339 (0.2) | 124.542 (0.07) | 124.57 | ||||||||||||||
| Proper motion (declination) | [mas/yr] | -140.6442095 (0.06) | -140.3291016 (0.2) | -140.644 (0.06) | -140.329 | ||||||||||||||
| Variability | |||||||||||||||||||
| Magnetic | |||||||||||||||||||
| Bd | [MG] | ||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||
| Binarity | |||||||||||||||||||
| B magnitude | |||||||||||||||||||
| V magnitude | |||||||||||||||||||
| R magnitude | |||||||||||||||||||
| I magnitude | |||||||||||||||||||
| J magnitude | 16.42 (0.01) | 16.46 (0.1) | 16.46 (0.1) | ||||||||||||||||
| H magnitude | 16.32 (0.03) | 16.23 (0.2) | 16.23 (0.2) | ||||||||||||||||
| K magnitude | 16.30 (0.04) | ||||||||||||||||||
| u magnitude | 17.78 (0.01) | 17.72 (0.01) | 17.78 (0.01) | 17.73 (0.01) | 17.74 (0.02) | 17.74 | 17.74 (0.02) | 17.74 (0.02) | |||||||||||
| g magnitude | 17.22 (0.005) | 17.23 (0.006) | 17.23 (0.005) | 17.21 (0.02) | 17.19 | 17.21 (0.02) | 17.19 (0.02) | ||||||||||||
| r magnitude | 17.07 (0.005) | 17.08 (0.005) | 17.07 (0.005) | 17.09 (0.03) | 17.09 | 17.09 (0.02) | 17.09 (0.02) | ||||||||||||
| i magnitude | 17.05 (0.006) | 17.05 (0.003) | 17.03 (0.006) | 17.02 (0.02) | 17.02 | 17.01 (0.02) | 17.02 (0.02) | ||||||||||||
| z magnitude | 17.08 (0.01) | 17.10 (0.004) | 17.03 (0.01) | 17.16 (0.02) | 17.16 | 17.15 (0.02) | 17.16 (0.02) | ||||||||||||
| G magnitude | 17.04 (0.008) | 17.06 | 17.04 | 17.04 (0.003) | 17.06 | ||||||||||||||
| BP magnitude | 17.23 (0.008) | 17.23 | 17.23 | ||||||||||||||||
| RP magnitude | 16.74 (0.005) | 16.74 | 16.74 | ||||||||||||||||
| Pan g magnitude | 17.23 (0.006) | 17.23 (0.006) | 17.23 (0.006) | ||||||||||||||||
| Pan r magnitude | 17.08 (0.005) | 17.08 (0.005) | 17.08 (0.005) | ||||||||||||||||
| Pan i magnitude | 17.05 (0.003) | 17.05 (0.003) | 17.05 (0.003) | ||||||||||||||||
| Pan z magnitude | 17.10 (0.004) | 17.10 (0.004) | 17.10 (0.004) | ||||||||||||||||
| Pan y magnitude | 17.15 (0.006) | 17.15 (0.008) | 17.15 (0.008) | ||||||||||||||||
| E(B-V) | 0.001 | ||||||||||||||||||
* 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.