All names: TIC 175231643, SDSS J083845.87+191416.5, [HHD2009] SDSS J0838+1914, Gaia DR2 661256399005907456, WIRED J083845.86+191416.5, EPIC 211934173, Gaia EDR3 661256399005907456, Gaia DR3 661256399005907456, 2MASS J08384586+1914167, SDSS J083845.86+191416.6, SDSS J083845.86+191416.5, WD 0835+194
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 08 38 45.87 (0.1) | 08 38 45.86 | 08 38 45.87 (0.2) | 08 38 45.86 | 08 38 45.87 | 08 38 45.87 (0.1) | 08 38 45.86 | 08 38 45.87 | |||||
Declination | 19 14 16.05 (0.09) | 19 14 16.62 | 19 14 16.07 (0.1) | 19 14 16.51 | 19 14 16.05 | 19 14 16.78 (0.09) | 19 14 12.84 | 19 14 16.53 | |||||
Spectral type | DA+M | DA+M | DA | DA+M | DA3.4 | DA+M | DA+MS | ||||||
Effective temperature | [K] | 8698.0 | 13904.0 (424) | 11000.0 (72) | |||||||||
log(g) | [cgs] | 6.76 | 7.56 (0.09) | 7.90 (0.06) | |||||||||
Mass | [M☉] | 0.163 | 0.39 (0.04) | ||||||||||
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] | 2.97 (0.2) | 3.51 (0.3) | 2.97 | 2.97 (0.2) | ||||||||
Distance | [pc] | 336.92 (20) | 284.62 (24) | 542.00 (324) | 336.92 | 336.92 (20) | |||||||
Composition | H | ||||||||||||
Proper motion (right ascension) | [mas/yr] | 7.926178312 (0.2) | 8.676858485 (0.4) | 7.926 (0.2) | |||||||||
Proper motion (declination) | [mas/yr] | -46.05490896 (0.1) | -46.17475046 (0.3) | -46.055 (0.1) | |||||||||
Variability | |||||||||||||
Magnetic | |||||||||||||
Bd | [MG] | ||||||||||||
Infrared excess (disk) | |||||||||||||
Binarity | WDMS | yes | WDMS | WDMS | |||||||||
B magnitude | |||||||||||||
V magnitude | |||||||||||||
R magnitude | |||||||||||||
I magnitude | |||||||||||||
J magnitude | 16.67 (0.1) | ||||||||||||
H magnitude | 16.51 (0.02) | ||||||||||||
K magnitude | 16.21 (0.03) | ||||||||||||
u magnitude | 18.80 (0.02) | 18.55 | 18.80 (0.02) | 18.54 | 18.54 (0.03) | ||||||||
g magnitude | 18.18 (0.006) | 18.19 | 18.17 (0.006) | 18.18 | 18.18 (0.02) | ||||||||
r magnitude | 21.30 (0.05) | 18.36 | 21.30 (0.05) | 18.35 | 18.36 (0.02) | ||||||||
i magnitude | 19.60 (0.02) | 18.28 | 19.60 (0.02) | 18.27 | 18.29 (0.02) | ||||||||
z magnitude | 18.02 (0.02) | 18.00 | 18.02 (0.02) | 17.99 | 18.02 (0.03) | ||||||||
G magnitude | 18.17 (0.02) | 18.19 | 18.17 | 18.17 (0.003) | |||||||||
BP magnitude | 18.27 (0.02) | 18.26 | |||||||||||
RP magnitude | 17.90 (0.02) | 17.89 | |||||||||||
Pan g magnitude | 18.20 (0.006) | ||||||||||||
Pan r magnitude | 18.39 (0.007) | ||||||||||||
Pan i magnitude | 18.29 (0.004) | ||||||||||||
Pan z magnitude | 18.08 (0.02) | ||||||||||||
Pan y magnitude | 17.92 (0.009) | ||||||||||||
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.