SDSS J155051.40+022511.1

All names: SDSS J155051.39+022511.2, GALEX J155051.4+022511, SDSS J155051.40+022511.1, Gaia EDR3 4423332877661462144, Gaia DR2 4423332877660698112, Gaia DR3 4423332877661462144, SDSS J155051.40+022511.12

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 15 50 51.41 (0.3) 15 50 51.39 15 50 51.41 (0.6) 15 50 51.39 (0.3)
Declination 02 25 10.96 (0.3) 02 25 11.30 02 25 10.97 (0.5) 02 25 11.35 (0.3)
Spectral type DBA DBA DBA DB
Effective temperature [K] 14206.0 15059.0 10617.0 14506.0 (98) 14737.0 (150)
log(g) [cgs] 7.76 7.62 7.20 8.00 (0) 8.12 (0.01)
Mass [M] 0.461 0.4 0.248 0.654 (0.008)
log(Luminosity) [L]
Cooling age [Gyr] 0.2548
log(H/He) <-6.305 <-5.25
log(C/He)
log(Ca/He) <-7.62
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] 2.36 (0.4) 1.83 (0.8) 2.36 (0.4)
Distance [pc] 423.09 (66) 547.52 (240) 408.00 423.08 (66)
Composition He
Proper motion (right ascension) [mas/yr] 16.81639896 (0.4) 18.56825166 (1) 16.816 (0.4)
Proper motion (declination) [mas/yr] -24.72996915 (0.3) -26.04804067 (1) -24.73 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.73 (0.03) 19.73 (0.03) 19.73 (0.04)
g magnitude 19.66 (0.01) 19.66 (0.01) 19.66 (0.01)
r magnitude 19.84 (0.02) 19.84 (0.02) 19.84 (0.02)
i magnitude 20.02 (0.03) 20.02 (0.03) 20.02 (0.03)
z magnitude 20.47 (0.2) 20.47 (0.1) 20.47 (0.2)
G magnitude 19.73 (0.03) 19.76 19.73 (0.004)
BP magnitude 19.75 (0.03) 19.87
RP magnitude 19.69 (0.06) 19.61
Pan g magnitude 19.68 (0.01)
Pan r magnitude 19.83 (0.01)
Pan i magnitude 20.01 (0.01)
Pan z magnitude 20.15 (0.03)
Pan y magnitude 20.18 (0.04)
E(B-V) 0.060

* 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.