SDSS J093708.92+284205.7

All names: J0937+2842, SDSS J093708.92+284205.70, Gaia DR3 696007387416777856, Gaia EDR3 696007387416777856, SDSS J093708.92+284205.6, GALEX J093708.9+284205, SDSS J093708.92+284205.7, SDSS J093708.91+284205.7, Gaia DR2 696007387416777856

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Coutu et al. 2019 Gaia DR2 Stilism Koester & Kepler 2015 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 09 37 08.91 (0.4) 09 37 08.92 09 37 08.91 09 37 08.91 (0.9) 09 37 08.92 (0.4) 09 37 08.92
Declination 28 42 05.48 (0.4) 28 42 05.71 28 42 05.49 28 42 05.49 (1) 28 42 05.71 (0.4) 28 42 05.72
Spectral type DBZA DBAZH DBAZH: DB
Effective temperature [K] 15465.0 13743.0 (865) 15213.0 (112) 14889.0 (242)
log(g) [cgs] 8.33 8.00 8.00 (0) 8.07 (0.2)
Mass [M] 0.799
log(Luminosity) [L]
Cooling age [Gyr] 0.0000
log(H/He) -4.858 -5.0774 (0.3) <-5.04
log(C/He)
log(Ca/He) -9.2895 (0.6) <-6.95
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] 2.64 (0.4) 2.64 (0.4)
Distance [pc] 378.72 (52) 365.05 (26) 410.00 378.72 (52)
Composition He
Proper motion (right ascension) [mas/yr] -5.618380895 (0.4) -5.618 (0.4)
Proper motion (declination) [mas/yr] -14.34208631 (0.4) -14.342 (0.4)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.18 (0.02) 19.18 (0.02) 19.19 (0.04)
g magnitude 19.23 (0.01) 19.23 (0.01) 19.23 (0.02)
r magnitude 19.45 (0.01) 19.46 (0.01) 19.46 (0.03)
i magnitude 19.72 (0.03) 19.73 (0.03) 19.75 (0.03)
z magnitude 19.80 (0.09) 19.84 (0.09) 19.84 (0.09)
G magnitude 19.35 (0.03) 19.40 19.35 (0.004)
BP magnitude 19.28 (0.03) 19.31
RP magnitude 19.50 (0.06) 19.45
Pan g magnitude 19.26 (0.01)
Pan r magnitude 19.50 (0.01)
Pan i magnitude 19.75 (0.01)
Pan z magnitude 19.98 (0.03)
Pan y magnitude 20.02 (0.04)
E(B-V) 0.020

* 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.