All names: GALEX J104057.5+083422, [HHD2009] SDSS J1040+0834, [SGR2010] J1040+0834, Gaia DR2 3869020545849273600, Gaia DR3 3869020545849273600, SDSS J104057.48+083421.6, SDSS J104057.40+083421.6, WD 1038+088, SDSS J104057.47+083421.6, TIC 393493485, 2MASS J10405749+0834217, Gaia EDR3 3869020545849273600, WIRED J104057.47+083421.6
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | 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 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 10 40 57.44 (0.1) | 10 40 57.47 | 10 40 57.44 (0.1) | 10 40 57.48 | 10 40 57.48 (0.1) | 10 40 57.48 | 10 40 57.26 | 10 40 57.48 | |||||
| Declination | 08 34 21.55 (0.1) | 08 34 21.65 | 08 34 21.56 (0.1) | 08 34 21.61 | 08 34 21.64 (0.1) | 08 34 21.66 | 08 34 18.84 | 08 34 21.64 | |||||
| Spectral type | DA+M | DA | DA+M | DA+M | DA dM | DA+M | DA | ||||||
| Effective temperature | [K] | 10922.0 (155) | 11840.0 (300) | 8664.0 (42) | 8403.0 (49) | ||||||||
| log(g) | [cgs] | 8.23 (0.1) | 8.33 (0.07) | 6.62 (0.08) | 5.94 (0.1) | ||||||||
| Mass | [M☉] | 0.745 (0.07) | 0.81 (0.05) | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 0.6918 | |||||||||||
| 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] | 4.16 (0.1) | 4.21 (0.2) | 4.16 (0.1) | |||||||||
| Distance | [pc] | 240.22 (9) | 237.34 (1e+01) | 411.00 (116) | 240.22 (9) | ||||||||
| Composition | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -36.29861293 (0.2) | -36.39246332 (0.3) | -36.299 (0.2) | -30.0 | ||||||||
| Proper motion (declination) | [mas/yr] | -5.188391436 (0.2) | -5.16178731 (0.3) | -5.188 (0.2) | -6.8 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | WDMS | WDMS | WDMS | ||||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 15.48 (0.06) | ||||||||||||
| H magnitude | 14.89 (0.007) | ||||||||||||
| K magnitude | 14.63 (0.007) | ||||||||||||
| u magnitude | 18.77 (0.02) | 18.62 | 18.60 (0.02) | 18.62 (0.02) | 18.62 | 18.66 (0.02) | |||||||
| g magnitude | 18.11 (0.007) | 18.07 | 18.07 (0.006) | 18.07 (0.02) | 18.07 | 18.08 (0.02) | |||||||
| r magnitude | 18.06 (0.007) | 18.02 | 18.03 (0.007) | 18.02 (0.02) | 18.02 | 18.03 (0.02) | |||||||
| i magnitude | 17.49 (0.007) | 17.49 | 17.47 (0.006) | 17.49 (0.01) | 17.49 | 17.48 (0.02) | |||||||
| z magnitude | 16.85 (0.01) | 16.88 | 16.86 (0.01) | 16.88 (0.02) | 16.88 | 16.87 (0.02) | |||||||
| G magnitude | 17.69 (0.02) | 17.71 | 17.69 (0.004) | ||||||||||
| BP magnitude | 18.12 (0.02) | 18.08 | |||||||||||
| RP magnitude | 17.03 (0.02) | 16.99 | |||||||||||
| Pan g magnitude | 18.09 (0.006) | ||||||||||||
| Pan r magnitude | 18.02 (0.006) | ||||||||||||
| Pan i magnitude | 17.46 (0.005) | ||||||||||||
| Pan z magnitude | 16.97 (0.004) | ||||||||||||
| Pan y magnitude | 16.69 (0.004) | ||||||||||||
| E(B-V) | 0.021 | ||||||||||||
* 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.