SDSS J110826.47+092721.5

All names: LAMOST J110826.47+092721.5, [HHD2009] SDSS J1108+0927, Gaia EDR3 3867223119215517824, WIRED J110826.47+092721.5, SDSS J110826.40+092721.5, SDSS J110826.47+092721.5, SDSS J110826.48+092721.5, WD 1105+097, Gaia DR2 3867223119215517824, GALEX J110826.4+092721, Gaia DR3 3867223119215517824

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 MWDD H Gaia DR2 Stilism sdss-wdms.org (29/04/2016) Tremblay et al. 2011 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013
Right ascension 11 08 26.45 (0.3) 11 08 26.48 11 08 26.45 (0.5) 11 08 26.47 11 08 26.47 (0.3) 11 08 26.48 11 08 26.33 11 08 26.47
Declination 09 27 21.49 (0.5) 09 27 21.54 09 27 21.50 (0.7) 09 27 21.49 09 27 21.54 (0.5) 09 27 21.55 09 27 14.40 09 27 21.52
Spectral type DA+M DA+M DA+M DA DA+dM DA DA d DA+M
Effective temperature [K] 39581.0 (769) 8611.0 43969.0 (2236) 43680.0 (2100) 11873.0 (176) 12594.0 (296)
log(g) [cgs] 7.64 (0.09) 5.84 7.57 (0.2) 7.70 (0.2) 8.97 (0.05) 9.80 (0.2)
Mass [M] 0.5 (0.03) 0.032 0.5 (0.07) 0.55 (0.08)
log(Luminosity) [L] -0.15 (0.07)
Cooling age [Gyr] 0.0032 (0.0007) 0.0035
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] -0.47 (0.7) -2.44 (0.8)
Distance [pc] 280.00 (18)
Composition H H H
Proper motion (right ascension) [mas/yr] -23.33230096 (0.4) -24.586968 (0.9) -23.332 (0.4) -21.7
Proper motion (declination) [mas/yr] -2.65408352 (0.4) 0.536367189 (0.7) -2.654 (0.4) -3.9
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.04 (0.01) 18.01 18.02 (0.01) 18.01 (0.02) 18.01 18.03 (0.02)
g magnitude 18.33 (0.007) 18.33 18.35 (0.007) 18.33 (0.04) 18.33 18.36 (0.04)
r magnitude 18.65 (0.01) 18.63 18.63 (0.01) 18.62 (0.02) 18.63 18.65 (0.02)
i magnitude 18.48 (0.01) 18.46 18.48 (0.01) 18.46 (0.02) 18.46 18.47 (0.02)
z magnitude 18.15 (0.03) 18.13 18.13 (0.03) 18.12 (0.04) 18.13 18.14 (0.04)
G magnitude 18.60 (0.02) 18.52 18.60 (0.01)
BP magnitude 18.41 (0.02) 18.38
RP magnitude 18.08 (0.03) 18.10
Pan g magnitude 18.40 (0.01)
Pan r magnitude 18.69 (0.01)
Pan i magnitude 18.50 (0.005)
Pan z magnitude 18.20 (0.007)
Pan y magnitude 18.05 (0.02)
E(B-V) 0.025

* 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.