V* DT Leo

All names: Gaia DR2 3970093152232493568, SDSS J111822.68+153334.5, GSC2 N20322333840, WD 1115+158, Gaia DR3 3970093152232493568, SDSS J111822.67+153334.5, V* DT Leo, GALEX J111822.6+153335, SDSS J111822.68+153334.50, Gaia EDR3 3970093152232493568, PG 1115+158

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) Gaia DR2 Stilism Koester & Kepler 2015 Koester et al. 2014 Bergeron et al. 2011 Voss et al. 2007 Beauchamp et al. 1999 Vincent et al. 2024 Simbad White Dwarf Research Corporation White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 11 18 22.60 (0.08) 11 18 22.68 11 18 22.60 (0.1) 11 18 22.60 11 18 22.69 (0.08) 11 18 22.25 11 18 22.68
Declination 15 33 34.46 (0.06) 15 33 34.52 15 33 34.47 (0.09) 15 33 34.46 15 33 34.54 (0.07) 15 33 29.52 15 33 34.54
Spectral type DBA DB DB DB2 DBV DBV DBO: DB
Effective temperature [K] 24685.0 21339.0 22750.0 (161) 25000.0 (500) 23770.0 (1624) 23920.0 25300.0 21943.0 (1457) 21800.0 25352.0 (255)
log(g) [cgs] 7.88 7.92 7.78 (0.03) 7.91 (0.07) 7.91 (0.07) 7.52 7.89 7.97 (0.03) 7.88 (0.03)
Mass [M] 0.542 0.557 0.56 (0.04) 0.385 0.586 (0.03)
log(Luminosity) [L] -1.26
Cooling age [Gyr] 0.0275 0.1980
log(H/He) -3.787 -3.7 (0.3) -3.84 (0.4) -2.44
log(C/He) -5.6
log(Ca/He) <-4.8
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He) -6.3
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] 5.55 (0.09) 5.50 (0.2) 5.55 5.55 (0.09)
Distance [pc] 180.08 (3) 181.76 (5) 201.00 142.00 180.08 180.08 (3)
Composition He He He
Proper motion (right ascension) [mas/yr] -83.40883843 (0.09) -83.10864007 (0.2) -83.409 (0.09)
Proper motion (declination) [mas/yr] -4.436674483 (0.09) -4.587584494 (0.2) -4.437 (0.09)
Variability VAR VAR VAR
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.12 16.90 (0.4) 16.12
V magnitude 16.12
R magnitude 16.88 (0.4)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 16.46 (0.006) 16.46 (0.006) 16.45 (0.01)
g magnitude 16.59 (0.004) 16.59 (0.004) 16.61 (0.02)
r magnitude 16.98 (0.005) 16.98 (0.005) 16.97 (0.02)
i magnitude 17.24 (0.006) 17.25 (0.006) 17.24 (0.02)
z magnitude 17.53 (0.02) 17.53 (0.02) 17.54 (0.02)
G magnitude 16.78 (0.005) 16.80 16.78 16.78 (0.003)
BP magnitude 16.69 (0.005) 16.64
RP magnitude 16.96 (0.006) 16.97
Pan g magnitude 16.65 (0.008)
Pan r magnitude 16.98 (0.005)
Pan i magnitude 17.28 (0.004)
Pan z magnitude 17.52 (0.006)
Pan y magnitude 17.71 (0.009)
E(B-V) 0.011

* 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.