WD 1438+008

All names: Gaia DR2 3651807316497495168, Gaia EDR3 3651807316497495168, SDSS J144114.21+003702.3, SDSS J144114.21+003702.4, WD 1438+008, Gaia DR3 3651807316497495168

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Harris et al. 2003 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Kleinman et al. 2004 Vincent et al. 2023
Right ascension 14 41 14.20 (0.5) 14 41 14.21 14 41 14.20 (0.7) 14 41 14.21 (0.5) 14 41 14.21 14 41 14.23 14 41 14.21 14 41 14.21
Declination 00 37 02.04 (0.5) 00 37 02.38 00 37 02.05 (0.8) 00 37 02.38 (0.5) 00 37 02.38 00 37 00.12 00 37 02.40 00 37 02.39
Spectral type DA2 DA2 DA2 DA DA3.1 DAH DA
Effective temperature [K] 13579.0 16123.0 (480) 16750.0 (507) 16164.0 (492)
log(g) [cgs] 7.63 8.00 (0.1) 8.07 (0.1) 8.05 (0.1)
Mass [M] 0.422
log(Luminosity) [L]
Cooling age [Gyr] 0.1584
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] 1.03 (0.6) 1.56 (0.8) 1.03 (0.6)
Distance [pc] 967.52 (545) 641.35 (331) 967.49 (545)
Composition H
Proper motion (right ascension) [mas/yr] -13.16166554 (0.7) -14.6466527 (2) -13.162 (0.7) 0.1 1.0
Proper motion (declination) [mas/yr] -21.34277281 (0.5) -22.79277877 (2) -21.343 (0.5) -27.2 -29.0
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.05 (0.03) 20.07 20.05 (0.04) 20.08 (0.04) 20.05 20.08 (0.04) 20.05 (0.04)
g magnitude 19.85 (0.01) 19.87 19.85 (0.01) 19.86 (0.02) 19.86 19.87 (0.02) 19.86 (0.02)
r magnitude 20.10 (0.02) 20.11 20.10 (0.02) 20.13 (0.03) 20.09 20.13 (0.03) 20.09 (0.03)
i magnitude 20.35 (0.03) 20.35 20.35 (0.04) 20.38 (0.04) 20.34 20.39 (0.04) 20.34 (0.04)
z magnitude 20.68 (0.1) 20.65 20.68 (0.1) 20.70 (0.1) 20.63 20.72 (0.1) 20.63 (0.1)
G magnitude 20.01 (0.06) 20.10 20.01 (0.007)
BP magnitude 19.95 (0.06) 19.94
RP magnitude 20.18 (0.1) 20.12
Pan g magnitude 19.88 (0.02)
Pan r magnitude 20.17 (0.01)
Pan i magnitude 20.40 (0.04)
Pan z magnitude 20.61 (0.04)
Pan y magnitude 20.77 (0.2)
E(B-V) 0.039

* 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.