SDSS J144819.48+322500.8

All names: SDSS J144819.48+322500.9, SDSS J144819.48+322500.8, GALEX J144819.5+322459, Gaia DR3 1283510882895711872, SDSS J144819.48+322500.89, Gaia EDR3 1283510882895711872, Gaia DR2 1283510882895711872

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 14 48 19.49 (0.1) 14 48 19.48 14 48 19.49 (0.2) 14 48 19.48 (0.1)
Declination 32 25 00.64 (0.2) 32 25 01.00 32 25 00.65 (0.2) 32 25 00.96 (0.2)
Spectral type DBA DBA DBA DB+MS
Effective temperature [K] 23561.0 18609.0 17831.0 20432.0 (237) 24168.0 (582)
log(g) [cgs] 8.05 7.80 7.73 8.22 (0.06) 8.07 (0.05)
Mass [M] 0.631 0.488 0.456 0.64 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.0694
log(H/He) -2 -2.83 (0.2)
log(C/He)
log(Ca/He) <-4.4
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] 1.96 (0.3) 1.66 (0.4) 1.96 (0.3)
Distance [pc] 509.69 (67) 601.51 (136) 480.00 509.68 (67)
Composition He
Proper motion (right ascension) [mas/yr] 6.72578903 (0.2) 6.476620019 (0.4) 6.726 (0.2)
Proper motion (declination) [mas/yr] -20.22409865 (0.2) -20.35054441 (0.5) -20.224 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.13 (0.02) 19.13 (0.02) 19.13 (0.02)
g magnitude 19.23 (0.01) 19.23 (0.01) 19.23 (0.01)
r magnitude 19.60 (0.02) 19.60 (0.02) 19.60 (0.01)
i magnitude 19.84 (0.03) 19.84 (0.03) 19.84 (0.03)
z magnitude 20.01 (0.1) 20.01 (0.1) 20.01 (0.1)
G magnitude 19.38 (0.02) 19.43 19.38 (0.004)
BP magnitude 19.32 (0.02) 19.24
RP magnitude 19.53 (0.03) 19.51
Pan g magnitude 19.25 (0.009)
Pan r magnitude 19.56 (0.01)
Pan i magnitude 19.88 (0.01)
Pan z magnitude 20.09 (0.05)
Pan y magnitude 20.05 (0.07)
E(B-V) 0.022

* Constant surface field

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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.