GD 61

All names: LAMOST J043839.37+410931.2, WD 0435+41, Gaia DR3 203931163247581184, WD 0435+410, GD61, IPHAS J043839.38+410931.9, UCAC4 656-023527, TIC 155901612, Gaia DR2 203931163247581184, LAMOST J043839.37+410931.8, WDJ043839.37+410932.35, GD 61, Lan 542, J0438+4109, EGGR 315, Gaia EDR3 203931163247581184, 2MASS J04383938+4109325

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Coutu et al. 2019 Gaia DR2 Stilism Koester et al. 2014 Farihi et al. 2013 Girven et al. 2012 Zuckerman et al. 2011 Bergeron et al. 2011 Farihi et al. 2011 Desharnais et al. 2008 Sion et al. 1990 Wegner et al. 1987 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 04 38 39.38 (0.03) 04 38 39.37 04 38 39.38 (0.05) 04 38 39.38 04 38 39.37 (0.03) 04 38 39.38 04 38 38.26
Declination 41 09 30.60 (0.02) 41 09 32.35 41 09 30.65 (0.04) 41 09 30.60 41 09 32.35 (0.02) 41 09 30.65 41 09 37.44
Spectral type DBZA DBAZ DBZA DBA DBAZ DBAZ DB DBAZ3 DB3
Effective temperature [K] 15680.0 (1633) 16810.0 17280.0 17280.0 16810.0 (410) 17280.0 17280.0 17000.0 19000.0 16868.0 (191)
log(g) [cgs] 8.04 8.19 8.20 8.20 8.19 (0.09) 8.20 8.12 (0.01)
Mass [M] 0.6156 0.7 (0.06) 0.71 0.665 (0.01)
log(Luminosity) [L] -2.04
Cooling age [Gyr] 0.1860 0.1950 0.6000
log(H/He) -4.3384 (0.06) -3.89 (0.1) -4.2 (0.06) -3.98 (0.02) -3.8
log(C/He) <-9.0 <-8.93 <-8.8
log(Ca/He) -8.5127 (0.6) -7.9 (0.2) -7.9 -7.88 (0.2) -7.5
log(Ca/H)
log(N/He) <-7
log(O/He) -5.95 (0.1) -5.93 (0.2) -5.8
log(Na/He)
log(Mg/He) -6.69 (0.1) -6.63 (0.2)
log(Al/He) <-7.18
log(Si/He) -7.2 -6.82 (0.1) -6.83 (0.08) -6.7
log(P/He) <-8.5
log(S/He) -8 (0.2) <-7.9
log(Cl/He) <-7.5
log(Sc/He)
log(Ti/He) <-9.08
log(V/He) <-8
log(Cr/He) <-8.98 <-7.8
log(Mn/He)
log(Fe/He) -7.6 (0.2) -7.73 (0.2) -7.6
log(Co/He) <-7
log(Ni/He) <-7.58 <-7.4
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He) <-8.9
log(Sr/He)
Parallax [mas] 18.55 (0.03) 18.62 18.62 (0.06) 18.55 18.55 (0.03) 18.62 (0.06)
Distance [pc] 53.91 (0.09) 53.70 (0.2) 53.70 (0.2) 52.00 50.10 53.91 53.91 (0.09) 53.70 (0.2)
Composition He He He He He
Proper motion (right ascension) [mas/yr] 5.053535157 (0.04) 5.279343895 (0.1) 5.054 (0.04) 5.279343894
Proper motion (declination) [mas/yr] -109.6783539 (0.03) -109.3490422 (0.07) -109.678 (0.03) -109.3490422
Variability
Magnetic
Bd [MG]
Infrared excess (disk) yes yes
Binarity
B magnitude 14.77 (0.0008)
V magnitude 14.86 14.88 (0.0008)
R magnitude 14.93 (0.003)
I magnitude 14.97 (0.008)
J magnitude 15.12 (0.05)
H magnitude 15.25 (0.1)
K magnitude 14.90 (0.1)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 14.82 (0.001) 14.84 14.82 14.82 (0.003) 14.84
BP magnitude 14.75 (0.001) 14.72 14.72
RP magnitude 14.95 (0.001) 14.95 14.95
Pan g magnitude 14.74 (0.005)
Pan r magnitude 15.01 (0.001)
Pan i magnitude 15.29 (0.002)
Pan z magnitude 15.51 (0.004)
Pan y magnitude 15.68 (0.004)
E(B-V) 0.001

* 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.