All names: GALEX J161544.5+174628, SDSS J161544.46+174627.5, Gaia EDR3 1200496999080913920, SDSS J161544.47+174627.5, Gaia DR3 1200496999080913920, SDSS J161544.48+174627.4, J1615+1746, Gaia DR2 1200496999080913920
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Coutu et al. 2019 | MWDD H | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 |
---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 16 15 44.45 (0.6) | 16 15 44.47 | 16 15 44.49 | 16 15 44.45 (0.9) | 16 15 44.49 (0.6) | 16 15 44.48 | ||||
Declination | 17 46 27.64 (0.5) | 17 46 27.52 | 17 46 27.35 | 17 46 27.63 (0.7) | 17 46 27.34 (0.5) | 17 46 27.39 | ||||
Spectral type | DZ | DZ | DZ | DZ | ||||||
Effective temperature | [K] | 9613.0 (456) | 10899.0 | 10385.0 (263) | ||||||
log(g) | [cgs] | 7.14 | 7.47 | 8.97 (0.7) | ||||||
Mass | [M☉] | 0.2297 | 0.35 | |||||||
log(Luminosity) | [L☉] | |||||||||
Cooling age | [Gyr] | 0.3210 | 0.2731 | |||||||
log(H/He) | <-6.1357 | |||||||||
log(C/He) | ||||||||||
log(Ca/He) | -7.9464 (0.6) | |||||||||
log(Ca/H) | ||||||||||
log(N/He) | ||||||||||
log(O/He) | ||||||||||
log(Na/He) | ||||||||||
log(Mg/He) | ||||||||||
log(Al/He) | ||||||||||
log(Si/He) | ||||||||||
log(P/He) | ||||||||||
log(S/He) | ||||||||||
log(Cl/He) | ||||||||||
log(Sc/He) | ||||||||||
log(Ti/He) | ||||||||||
log(V/He) | ||||||||||
log(Cr/He) | ||||||||||
log(Mn/He) | ||||||||||
log(Fe/He) | ||||||||||
log(Co/He) | ||||||||||
log(Ni/He) | ||||||||||
log(Cu/He) | ||||||||||
log(Zn/He) | ||||||||||
log(Ga/He) | ||||||||||
log(Ge/He) | ||||||||||
log(Sr/He) | ||||||||||
Parallax | [mas] | 0.93 (0.8) | 1.35 | 1.35 (1) | 0.93 (0.8) | |||||
Distance | [pc] | 1072.03 (911) | 740.19 (634) | 740.19 (634) | 1072.04 (911) | |||||
Composition | He | He | ||||||||
Proper motion (right ascension) | [mas/yr] | -39.27055189 (0.8) | -40.45111605 (2) | -39.271 (0.8) | ||||||
Proper motion (declination) | [mas/yr] | 18.39987788 (0.7) | 18.0461999 (1) | 18.4 (0.7) | ||||||
Variability | ||||||||||
Magnetic | ||||||||||
Bd | [MG] | |||||||||
Infrared excess (disk) | ||||||||||
Binarity | ||||||||||
B magnitude | ||||||||||
V magnitude | ||||||||||
R magnitude | ||||||||||
I magnitude | ||||||||||
J magnitude | ||||||||||
H magnitude | ||||||||||
K magnitude | ||||||||||
u magnitude | 20.79 (0.07) | 20.79 (0.07) | 20.81 (0.07) | |||||||
g magnitude | 20.53 (0.02) | 20.52 (0.02) | 20.60 (0.03) | |||||||
r magnitude | 20.54 (0.03) | 20.58 (0.03) | 20.58 (0.03) | |||||||
i magnitude | 20.68 (0.05) | 20.68 (0.05) | 20.73 (0.05) | |||||||
z magnitude | 21.13 (0.2) | 21.22 (0.2) | 21.22 (0.2) | |||||||
G magnitude | 20.54 (0.1) | 20.59 | 20.54 (0.006) | |||||||
BP magnitude | 20.80 (0.1) | 20.79 | ||||||||
RP magnitude | 20.36 (0.09) | 20.35 | ||||||||
Pan g magnitude | 20.66 (0.01) | |||||||||
Pan r magnitude | 20.59 (0.03) | |||||||||
Pan i magnitude | 20.74 (0.03) | |||||||||
Pan z magnitude | 20.74 (0.04) | |||||||||
Pan y magnitude | ||||||||||
E(B-V) | 0.049 |
* 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.