WD 0144-087

All names: Gaia DR3 2464589334096396416, USNO-A2.0 0750-00420862, Gaia DR2 2464589334096396416, SDSS J014722.56-083059.60, SDSS J014722.59-083100.2, WD 0144-087, Gaia EDR3 2464589334096396416, SDSS J014722.57-083059.8, SDSS J014722.56-083059.6, GALEX J014722.4-083059

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 01 47 22.59 (0.07) 01 47 22.58 01 47 22.59 (0.1) 01 47 22.59 01 47 22.56 (0.07) 01 47 22.56 01 47 22.22 01 47 22.56
Declination -08 31 00.27 (0.06) -08 30 59.89 -08 31 00.25 (0.1) -08 31 00.27 -08 30 59.59 (0.06) -08 30 59.63 -08 30 57.24 -08 30 59.61
Spectral type DBA DB DBA DBA DB3.3 DBA DB
Effective temperature [K] 14400.0 14279.0 13450.0 14407.0 (30) 13488.0 (288) 15394.0 (94) 14850.0 (114)
log(g) [cgs] 8.11 8.21 8.13 8.00 (0) 8.06 (0.03) 8.51 (0.06) 8.55 (0.07)
Mass [M] 0.653 0.715 0.665 0.621 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.3426
log(H/He) -4.723 -4.46 (0.1)
log(C/He)
log(Ca/He) <-8.78
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] 6.91 (0.09) 7.25 (0.2) 6.91 6.91 (0.09)
Distance [pc] 144.74 (2) 137.89 (3) 156.00 144.74 144.74 (2)
Composition He
Proper motion (right ascension) [mas/yr] 25.85413505 (0.1) 26.16045734 (0.3) 25.854 (0.1) 24.7
Proper motion (declination) [mas/yr] -42.09024158 (0.07) -42.29806467 (0.2) -42.09 (0.07) -44.3
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.50 (0.3)
V magnitude
R magnitude 17.10 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.24 (0.009) 17.24 (0.009) 17.23 (0.02) 17.20 17.21 (0.02)
g magnitude 17.26 (0.005) 17.26 (0.005) 17.30 (0.02) 17.31 17.33 (0.02)
r magnitude 17.55 (0.006) 17.55 (0.006) 17.54 (0.01) 17.54 17.54 (0.02)
i magnitude 17.74 (0.007) 17.75 (0.007) 17.75 (0.02) 17.75 17.75 (0.02)
z magnitude 17.99 (0.02) 17.99 (0.02) 18.06 (0.03) 18.06 18.04 (0.03)
G magnitude 17.39 (0.006) 17.43 17.39 17.39 (0.003)
BP magnitude 17.36 (0.006) 17.34
RP magnitude 17.46 (0.008) 17.46
Pan g magnitude 17.33 (0.008)
Pan r magnitude 17.55 (0.006)
Pan i magnitude 17.80 (0.003)
Pan z magnitude 17.99 (0.01)
Pan y magnitude 18.14 (0.02)
E(B-V) 0.005

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:
Normalize by mean flux

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 (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.