CSO 558

All names: GALEX J150506.2+383017, LAMOST J150506.25+383017.4, Gaia DR2 1295485694092963968, Gaia EDR3 1295485694092963968, SDSS J150506.24+383017.4, SDSS J150506.24+383017.39, Gaia DR3 1295485694092963968, SDSS J150506.24+383017.3, SDSS J150506.26+383017.5, CSO 558

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 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 15 05 06.23 (0.04) 15 05 06.26 15 05 06.23 (0.05) 15 05 06.23 15 05 06.27 (0.04)
Declination 38 30 17.34 (0.04) 38 30 17.52 38 30 17.35 (0.05) 38 30 17.34 38 30 17.58 (0.04)
Spectral type DBA DBA DB DBA DB
Effective temperature [K] 14112.0 12623.0 12298.0 15049.0 (30) 15000.0 (300) 12382.0 (167)
log(g) [cgs] 7.61 7.37 7.33 8.00 (0) 7.99 (0.04) 7.36 (0.02)
Mass [M] 0.393 0.302 0.29 0.5429999999999999 (0.02) 0.298 (0.009)
log(Luminosity) [L]
Cooling age [Gyr] 0.1831
log(H/He) -5.049 -4.52 (0.1)
log(C/He)
log(Ca/He) <-8.02
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] 5.66 (0.05) 5.62 (0.07) 5.66 5.66 (0.05)
Distance [pc] 176.55 (2) 178.04 (2) 146.00 176.55 176.55 (2)
Composition He
Proper motion (right ascension) [mas/yr] -31.95902944 (0.05) -32.02822593 (0.1) -31.959 (0.05)
Proper motion (declination) [mas/yr] -15.00601258 (0.05) -14.93999326 (0.1) -15.006 (0.05)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.00
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 16.99 (0.007) 17.01 (0.02) 16.99 (0.007)
g magnitude 16.94 (0.004) 16.95 (0.01) 16.94 (0.004)
r magnitude 17.20 (0.005) 17.22 (0.02) 17.20 (0.005)
i magnitude 17.41 (0.006) 17.41 (0.02) 17.41 (0.006)
z magnitude 17.59 (0.02) 17.61 (0.02) 17.59 (0.02)
G magnitude 17.07 (0.005) 17.10 17.07 17.07 (0.003)
BP magnitude 17.07 (0.005) 17.03
RP magnitude 17.11 (0.008) 17.11
Pan g magnitude 17.02 (0.004)
Pan r magnitude 17.20 (0.002)
Pan i magnitude 17.41 (0.002)
Pan z magnitude 17.61 (0.008)
Pan y magnitude 17.75 (0.02)
E(B-V) 0.020

* 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.