SDSS J145634.43+413407.3

All names: SDSS J145634.43+413407.40, Gaia DR2 1489169443329385984, Gaia EDR3 1489169443329385984, SDSS J145634.43+413407.4, GALEX J145634.4+413407, WD 1454+417, SDSS J145634.43+413407.3, SDSS J145634.42+413407.4, Gaia DR3 1489169443329385984

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 14 56 34.40 (0.2) 14 56 34.42 14 56 34.40 (0.2) 14 56 34.43 (0.2) 14 56 34.43 14 56 34.54 14 56 34.43
Declination 41 34 07.37 (0.2) 41 34 07.41 41 34 07.37 (0.3) 41 34 07.42 (0.2) 41 34 07.36 41 34 04.08 41 34 07.36
Spectral type DB DB DB DB DB DB
Effective temperature [K] 14433.0 12898.0 11794.0 15027.0 (390) 14082.0 (413)
log(g) [cgs] 8.68 7.67 7.52 8.68 (0.2) 8.48 (0.3)
Mass [M] 1.021 0.415 0.352 0.885 (0.2)
log(Luminosity) [L]
Cooling age [Gyr] 0.2350
log(H/He) <-6.042
log(C/He)
log(Ca/He)
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] 2.37 (0.3) 2.06 (0.3) 2.37 (0.3)
Distance [pc] 421.83 (45) 485.48 (78) 421.83 (45)
Composition He
Proper motion (right ascension) [mas/yr] -25.12770411 (0.2) -25.15534183 (0.5) -25.128 (0.2) -2.9
Proper motion (declination) [mas/yr] -2.8297609 (0.3) -2.427798204 (0.6) -2.83 (0.3) -1.8
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.51 (0.03) 19.51 (0.03) 19.50 (0.03) 19.50 19.54 (0.03)
g magnitude 19.55 (0.01) 19.55 (0.01) 19.46 (0.03) 19.46 19.49 (0.03)
r magnitude 19.77 (0.02) 19.77 (0.02) 19.77 (0.02) 19.77 19.79 (0.02)
i magnitude 19.94 (0.03) 19.94 (0.03) 19.91 (0.04) 19.91 19.93 (0.04)
z magnitude 20.21 (0.1) 20.20 (0.1) 20.35 (0.2) 20.35 20.38 (0.1)
G magnitude 19.62 (0.03) 19.67 19.62 (0.004)
BP magnitude 19.71 (0.03) 19.68
RP magnitude 19.64 (0.06) 19.56
Pan g magnitude 19.56 (0.007)
Pan r magnitude 19.75 (0.01)
Pan i magnitude 19.97 (0.02)
Pan z magnitude 20.09 (0.02)
Pan y magnitude 20.00 (0.1)
E(B-V) 0.022

* 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.