SDSS J225621.09+014228.1

All names: SDSS J225621.10+014228.1, Gaia EDR3 2655511861743100160, Gaia DR2 2655511861743100160, SDSS J225621.09+014228.1, SDSS J225621.10+014228.15, Gaia DR3 2655511861743100160

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 SDSS DR10 MWDD H MWDD HE Gaia DR2 Stilism sdss-wdms.org (29/04/2016) Kepler et al. 2015 Simbad
Right ascension 22 56 21.10 (1) 22 56 21.10 22 56 21.10 22 56 21.10 (2) 22 56 21.10 22 56 21.09 (1)
Declination 01 42 28.06 (1) 01 42 28.15 01 42 28.15 01 42 28.07 (1) 01 42 28.15 01 42 28.36 (1)
Spectral type WD+MS WD+MS WD+MS DA DA+dM
Effective temperature [K] 5158.0 4829.0 14393.0 (1259) 10743.0 (195)
log(g) [cgs] 7.12 6.76 8.04 (0.3) 8.20 (0.2)
Mass [M☉] 0.205 0.11 0.63 (0.2) 0.7140000000000001 (0.1)
log(Luminosity) [L☉]
Cooling age [Gyr] 1.3840
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] -1.33 (1) -4.67 (2)
Distance [pc] 942.00 (163)
Composition
Proper motion (right ascension) [mas/yr] 3.43679852 (1) 3.312216231 (2) 3.437 (1)
Proper motion (declination) [mas/yr] -18.76066185 (1) -15.04949381 (2) -18.761 (1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 21.30 (0.1) 21.30 (0.1) 21.31 21.31 (0.1) 21.30 (0.1)
g magnitude 20.64 (0.03) 20.64 (0.03) 20.67 20.67 (0.03) 20.64 (0.03)
r magnitude 20.49 (0.03) 20.49 (0.03) 20.52 20.52 (0.03) 20.49 (0.03)
i magnitude 20.17 (0.03) 20.17 (0.03) 20.22 20.22 (0.04) 20.17 (0.03)
z magnitude 19.52 (0.07) 19.52 (0.07) 19.59 19.59 (0.07) 19.52 (0.07)
G magnitude 20.65 (0.2) 20.57 20.65 (0.01)
BP magnitude 20.51 (0.2) 20.43
RP magnitude 19.51 (0.1) 19.80
Pan g magnitude 20.66 (0.02)
Pan r magnitude 20.59 (0.04)
Pan i magnitude 20.25 (0.01)
Pan z magnitude 19.82 (0.01)
Pan y magnitude 19.44 (0.03)
E(B-V) 0.055

* 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.