SDSS J093929.27+474549.9

All names: Gaia DR2 824699176134076544, Gaia EDR3 824699176134076544, SDSS J093929.27+474549.9, SDSS J093929.28+474549.9, WD 0936+479, GALEX J093929.3+474551, SDSS J093929.28+474550.1, Gaia DR3 824699176134076544, SDSS J093929.28+474550.2

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism sdss-wdms.org (29/04/2016) Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 09 39 29.30 (0.2) 09 39 29.27 09 39 29.30 (0.3) 09 39 29.28 09 39 29.28 (0.2) 09 39 29.28 09 39 28.68 09 39 29.28
Declination 47 45 49.61 (0.2) 47 45 49.97 47 45 49.62 (0.3) 47 45 49.90 47 45 50.11 (0.2) 47 45 49.94 47 45 48.60 47 45 49.94
Spectral type DA+M DA+M DA+M DA DA DA+M DA+MS
Effective temperature [K] 9828.0 16525.0 (809) 10498.0 (120) 10402.0 (122)
log(g) [cgs] 6.78 7.44 (0.2) 8.31 (0.1) 8.28 (0.1)
Mass [M] 0.177 0.36 (0.07)
log(Luminosity) [L]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 1.87 (0.3) 1.61 (0.4) 1.87 (0.3)
Distance [pc] 534.61 (84) 620.98 (173) 341.00 (26) 534.62 (84)
Composition H
Proper motion (right ascension) [mas/yr] 15.30576725 (0.3) 14.80921438 (0.6) 15.306 (0.3) 15.3
Proper motion (declination) [mas/yr] -31.01637282 (0.3) -31.28771727 (0.8) -31.016 (0.3) -35.1
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS WDMS WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.54 (0.03) 19.65 19.54 (0.03) 19.65 (0.04) 19.65 19.64 (0.04)
g magnitude 19.30 (0.01) 19.36 19.30 (0.01) 19.36 (0.03) 19.36 19.35 (0.03)
r magnitude 19.59 (0.02) 19.66 19.59 (0.02) 19.66 (0.05) 19.66 19.65 (0.05)
i magnitude 19.52 (0.02) 19.60 19.52 (0.02) 19.60 (0.03) 19.60 19.59 (0.03)
z magnitude 19.22 (0.07) 19.28 19.22 (0.07) 19.28 (0.07) 19.28 19.28 (0.07)
G magnitude 19.38 (0.03) 19.42 19.38 (0.004)
BP magnitude 19.46 (0.03) 19.31
RP magnitude 19.33 (0.05) 19.28
Pan g magnitude 19.36 (0.008)
Pan r magnitude 19.58 (0.009)
Pan i magnitude 19.64 (0.02)
Pan z magnitude 19.44 (0.01)
Pan y magnitude 19.29 (0.05)
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.