WD 1444-008B

All names: Gaia DR2 3650547413611017728, PSO J144726.089-010124.627, WD 1444-008, SDSS J144726.11-010124.7, WD 1444-008B, SDSS J144726.10-010124.6

Parameter Unit MWDD H Pan-STARRS DR1 Gaia DR2 Harris et al. 2003 SDSS DR12 Simbad Eisenstein et al. 2006 Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Kleinman et al. 2013 Kleinman et al. 2004
Right ascension 14 47 26.08 (0.6) 14 47 26.11 14 47 26.11 14 47 26.11 14 47 26.11 14 47 25.49 14 47 26.10 14 47 26.11 14 47 26.10
Declination -01 01 24.65 (0.4) -01 01 24.64 -01 01 24.64 -01 01 24.64 -01 01 24.64 -01 01 24.24 -01 01 24.64 -01 01 24.66 -01 01 24.64
Spectral type DA3.5: DA3.5: DA DA DA DA4.5 DA DA
Effective temperature [K] 10323.0 11220.0 (237) 11557.0 (347) 11699.0 (361) 11439.0 (353) 11273.0 (242)
log(g) [cgs] 8.37 8.57 (0.1) 8.11 (0.2) 8.66 (0.1) 8.19 (0.2) 8.63 (0.1)
Mass [M] 0.836 1.001 (0.08)
log(Luminosity) [L]
Cooling age [Gyr] 0.9702
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] 3.75 (0.6)
Distance [pc] 266.73 (45)
Composition H
Proper motion (right ascension) [mas/yr] -22.22418981 (1) -2.0
Proper motion (declination) [mas/yr] -0.63466894 (0.9) 0.0
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.16 20.19 (0.05) 20.18 20.19 (0.05) 20.19 (0.05) 20.16 20.19 (0.05) 20.19 (0.05) 20.16 (0.04)
g magnitude 19.78 19.74 (0.01) 19.75 19.76 (0.02) 19.76 (0.02) 19.78 19.75 (0.02) 19.75 (0.02) 19.78 (0.02)
r magnitude 19.88 19.86 (0.02) 19.87 19.87 (0.02) 19.87 (0.02) 19.88 19.87 (0.02) 19.87 (0.02) 19.88 (0.02)
i magnitude 20.02 19.98 (0.03) 20.02 20.00 (0.03) 20.00 (0.03) 20.02 20.00 (0.03) 20.00 (0.03) 20.02 (0.03)
z magnitude 20.19 20.11 (0.1) 20.10 20.10 (0.1) 20.10 (0.1) 20.19 20.09 (0.1) 20.09 (0.1) 20.19 (0.1)
G magnitude 19.84
BP magnitude 19.75
RP magnitude 19.60
Pan g magnitude 19.77 (0.01)
Pan r magnitude 19.87 (0.02)
Pan i magnitude 20.03 (0.009)
Pan z magnitude 20.17 (0.03)
Pan y magnitude 20.27 (0.1)

* 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.