LAWD 37

All names: PLX 2716, AC2000 4195112, ALS 2481, BPM 7108, CSI-64-11430, CSI-64-11431, Ci 20 658, EGGR 82, GEN# +9.86145141, GJ 440, GSC 08981-04418, GSC 08981-04378, GSC 08981-04417, HIC 57367, HIP 57367, L 145-41, L 145-141, LAWD 37, LFT 844, LHS 43, LP 145-141, LPM 396, LS 2481, LTT 4364, NLTT 28447, PM 11429-6434, UBV M 42331, UBV 10596, WD 1141-64, WD 1142-64, WD 1142-645, WG 20, Zkh 167, [L68] 74, uvby98 986145141, 2MASS J11454297-6450297, PLX 2716.00, TYC 8981-4417-1

Parameter Unit Holberg et al. 2016 Sion et al. 2014 Koester et al. 1982a Simbad
Right ascension 11 45 49.92 11 45 42.92
Declination -64 50 27.60 -64 50 29.46
Spectral type DQ DQ6.4 DQ DQ
Effective temperature [K] 7972.0 (219) 7966.0 7800.0 (200)
log(g) [cgs] 7.88 (0.02)
Mass [M☉] 0.61 (0.01) 0.46 (0.06)
log(Luminosity) [L☉]
Cooling age [Gyr] 1.2900
log(H/He)
log(C/He) -5.4
log(Ca/He)
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] 216.12 (1) 215.80
Distance [pc] 4.63 (0.02) 4.62 4.63
Composition He
Proper motion (right ascension) [mas/yr] 2668.5
Proper motion (declination) [mas/yr] -352.7
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 11.72
V magnitude 11.50 11.51
R magnitude 11.34
I magnitude 11.16
J magnitude 11.19
H magnitude 11.13
K magnitude 11.10
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude

* Constant surface field

Special notes:

Spectra

Absorption lines

Photometric filters

BVRI
ugriz

Controls

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Range:

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y: to

Spectra available:

Spectra without link are available upon request





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.