Wolf 672 A

All names: WD 1716+020, LFT 1339, LHS 3278, G 19-20, UBV M 42664, GEN# +9.80019020, Wolf 672, 17185+0156N, NLTT 44548, CSI+02-17161 2, UBV 14748, WDS J17187+0157A, Wolf 672 A, UCAC4 460-064257, WDJ171835.16+015653.21, TIC 345065584, USNO-B1.0 0919-00355826, Gaia EDR3 4387171623850187648, LTT 15125, ** LDS 991A, USNO 340, WD 1716+02, LAWD 67, WDS J17208+0156A, LSPM J1718+0156N, UCAC2 32393830, G19-20, LAMOST J171835.17+015653.2, Gaia DR3 4387171623850187648, JP11 5095, PM J17185+0156N, Ci 20 1031, Gaia DR2 4387171623850187648, EGGR 123, 2MASS J17183515+0156531

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 McCleery et al. 2020 MWDD H Gaia DR2 Bedard et al. 2017 Stilism Limoges et al. 2015 Gianninas et al. 2011 Koester et al. 2009 Zuckerman et al. 2003 Bergeron et al. 2001 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 17 18 34.70 (0.02) 17 18 34.71 (0.03) 17 18 34.71 (0.03) 17 18 34.70 17 18 35.16 (0.02) 17 18 34.71 17 18 36.50
Declination 01 56 48.64 (0.01) 01 56 48.78 (0.03) 01 56 48.78 (0.03) 01 56 48.64 01 56 53.20 (0.01) 01 56 48.78 01 57 06.48
Spectral type DA DA DA DA DA DA DA DA DA3.7 DA4
Effective temperature [K] 12685.0 (185) 12461.6 (114) 12480.0 13255.0 (268) 13550.0 (345) 13630.0 (342) 13644.0 (39) 13620.0 13470.0 (900) 13003.0 (63)
log(g) [cgs] 7.91 (0.01) 7.89 (0.01) 7.89 7.88 (0.05) 7.91 (0.05) 7.89 (0.05) 7.64 (0.004) 7.79 8.11 (0.1) 7.94 (0.004)
Mass [M] 0.558 (0.009) 0.547 0.56 (0.2) 0.56 (0.03) 0.55 (0.03) 0.67 (0.08) 0.571 (0.003)
log(Luminosity) [L] -2.24 -2.37 (0.09)
Cooling age [Gyr] 0.2920 0.3200 (0.06)
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H) <-8.536
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] 26.20 (0.03) 26.20 (0.03) 26.07 (0.04) 26.07 (0.04) 28.10 (3) 28.10 (3) 26.20 26.20 (0.03) 26.07 (0.04) 25.00
Distance [pc] 38.17 (0.04) 38.17 (0.04) 38.36 (0.07) 38.36 (0.07) 40.80 (7) 35.60 (3) 39.00 35.59 (3) 38.17 38.17 (0.04) 38.36 (0.07) 40.00
Composition H H H H H
Proper motion (right ascension) [mas/yr] -436.0683348 (0.02) -436.0313725 (0.08) -436.068 (0.02) -436.0313725
Proper motion (declination) [mas/yr] -285.3538734 (0.02) -285.4578914 (0.08) -285.354 (0.02) -285.4578914
Variability NOV
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity DDU
B magnitude 14.48
V magnitude 14.26 14.36
R magnitude 14.40 14.63 (0.08)
I magnitude 14.40
J magnitude 14.68 14.60 (0.06)
H magnitude 14.65 14.53 (0.07)
K magnitude 14.71 14.56 (0.1)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 14.40 (0.0008) 14.41 14.41 14.40 14.40 (0.003) 14.41
BP magnitude 14.39 (0.0008) 14.38 14.38
RP magnitude 14.44 (0.001) 14.44 14.44
Pan g magnitude 14.33 (0.002)
Pan r magnitude 14.55 (0.006)
Pan i magnitude 14.76 (0.008)
Pan z magnitude 14.73 (0.002)
Pan y magnitude 14.91 (0.06)
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.