LAWD 31

All names: LDS 275B, LDS 275AB, GEN# +6.00103537J, EGGR 66, Gaia DR2 5436014972680358272, LAWD 31, L 462-56, WDS J09370-3721AB, WDJ093659.94-372126.91, ** LDS 275AB

Parameter Unit Gaia DR2 Bergeron et al. 1997 Simbad Gentile Fusillo et al. 2018 Wegner 1983
Right ascension 09 36 59.50 (0.02) 09 36 59.78 09 36 59.50
Declination -37 21 24.10 (0.02) -37 21 30.71 -37 21 24.10
Spectral type DQ6+DA6
Effective temperature [K] 8340.0 (230) 8000.0
log(g) [cgs] 7.50 (0) 7.50 (0.5)
Mass [M] 0.35
log(Luminosity) [L] -2.88
Cooling age [Gyr] 0.5900
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] 38.08 (0.03) 38.08 (0.03)
Distance [pc] 26.26 (0.02) 26.26 (0.02)
Composition H
Proper motion (right ascension) [mas/yr] -339.4270543 (0.04) -339.4270543
Proper motion (declination) [mas/yr] 181.4050017 (0.05) 181.4050017
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.40
V magnitude 15.18
R magnitude 15.01
I magnitude 14.83
J magnitude 14.76
H magnitude 14.62
K magnitude 14.65
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 15.16 15.16
BP magnitude 15.27 15.27
RP magnitude 14.90 14.90
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:

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 at Université de Montréal. Please send database updates, corrections, suggestions or bug reports to dufourpa@astro.umontreal.ca.