SDSS J145534.04+103846.6

All names: SDSS J145534.04+103846.68, Gaia DR2 1180299996974036736, Gaia EDR3 1180299996974036736, GALEX J145534.1+103846, Gaia DR3 1180299996974036736, SDSS J145534.06+103846.8, SDSS J145534.04+103846.6, SDSS J145534.04+103846.7

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 55 34.03 (0.2) 14 55 34.07 14 55 34.03 (0.4) 14 55 34.08 (0.2)
Declination 10 38 46.70 (0.2) 10 38 46.80 10 38 46.71 (0.3) 10 38 46.80 (0.2)
Spectral type DB DB DB DB
Effective temperature [K] 12296.0 12907.0 11897.0 12311.0 (101) 12131.0 (100)
log(g) [cgs] 7.76 8.09 7.98 8.00 (0) 8.00 (0)
Mass [M] 0.455 0.64 0.573
log(Luminosity) [L]
Cooling age [Gyr] 0.3811
log(H/He) -6.183 <-5.7
log(C/He)
log(Ca/He) <-9.7
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] 4.32 (0.2) 4.22 (0.4) 4.32 (0.2)
Distance [pc] 231.39 (11) 236.91 (24) 234.00 231.39 (11)
Composition He
Proper motion (right ascension) [mas/yr] -40.29088649 (0.2) -39.28657366 (0.7) -40.291 (0.2)
Proper motion (declination) [mas/yr] -5.901889448 (0.2) -6.30695949 (0.6) -5.902 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.60 (0.02) 18.61 (0.02) 18.60 (0.02)
g magnitude 18.57 (0.008) 18.59 (0.03) 18.57 (0.008)
r magnitude 18.79 (0.01) 18.80 (0.02) 18.79 (0.01)
i magnitude 19.00 (0.01) 19.01 (0.02) 19.00 (0.01)
z magnitude 19.23 (0.05) 19.22 (0.05) 19.23 (0.05)
G magnitude 18.66 (0.02) 18.70 18.66 (0.004)
BP magnitude 18.67 (0.02) 18.66
RP magnitude 18.76 (0.06) 18.65
Pan g magnitude 18.61 (0.008)
Pan r magnitude 18.78 (0.007)
Pan i magnitude 18.99 (0.009)
Pan z magnitude 19.17 (0.01)
Pan y magnitude 19.29 (0.03)
E(B-V) 0.024

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:
Normalize by mean flux

Range:

x: to
y: to

Spectra available:

Spectra without link are available upon request

Absorption lines

Photometric filters

BVRI
ugriz

Photometric fit





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.