SDSS J155115.32+363742.0

All names: SDSS J155115.33+363742.0, Gaia DR3 1373002745617394304, WD 1549+367, SDSS J155115.32+363742.0, Gaia EDR3 1373002745617394304, GALEX J155115.3+363742, SDSS J155115.32+363742.1, SDSS J155115.32+363741.9, Gaia DR2 1373002745617394304, SDSS J155115.33+363742.00

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 15 51 15.32 (0.06) 15 51 15.33 15 51 15.32 (0.08) 15 51 15.32 15 51 15.32 (0.06) 15 51 15.33 15 51 14.74 15 51 15.33
Declination 36 37 41.96 (0.07) 36 37 42.11 36 37 41.97 (0.09) 36 37 41.96 36 37 42.10 (0.07) 36 37 42.02 36 37 38.64 36 37 42.02
Spectral type DB DB DB DB DB DB DB
Effective temperature [K] 16077.0 15147.0 14824.0 16035.0 (103) 16692.0 (868) 16918.0 (108) 16337.0 (122)
log(g) [cgs] 7.99 7.93 7.92 7.97 (0.08) 8.07 (0.06) 8.27 (0.06) 8.19 (0.07)
Mass [M] 0.584 0.551 0.547 0.635 (0.05) 0.7 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 0.1825
log(H/He) -6.227 <-5.22
log(C/He)
log(Ca/He) <-6.88
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] 4.25 (0.08) 4.29 (0.1) 4.25 4.25 (0.09)
Distance [pc] 235.29 (5) 233.18 (6) 239.00 235.29 235.29 (5)
Composition He
Proper motion (right ascension) [mas/yr] -0.386643695 (0.08) -0.373415705 (0.2) -0.387 (0.08) -2.0
Proper motion (declination) [mas/yr] -8.526367218 (0.1) -8.789223209 (0.2) -8.526 (0.1) -11.1
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.80 (0.01) 17.80 (0.01) 17.77 (0.03) 17.77 17.76 (0.03)
g magnitude 17.87 (0.006) 17.87 (0.006) 17.91 (0.02) 17.91 17.88 (0.02)
r magnitude 18.17 (0.007) 18.17 (0.007) 18.18 (0.02) 18.18 18.16 (0.02)
i magnitude 18.43 (0.01) 18.43 (0.01) 18.43 (0.02) 18.44 18.43 (0.02)
z magnitude 18.63 (0.04) 18.63 (0.04) 18.73 (0.04) 18.74 18.72 (0.04)
G magnitude 18.01 (0.008) 18.04 18.01 18.01 (0.003)
BP magnitude 17.97 (0.008) 17.94
RP magnitude 18.11 (0.01) 18.14
Pan g magnitude 17.92 (0.004)
Pan r magnitude 18.18 (0.008)
Pan i magnitude 18.45 (0.005)
Pan z magnitude 18.66 (0.01)
Pan y magnitude 18.80 (0.03)
E(B-V) 0.021

* 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.