BD+34 2473B

All names: CBS 381, EGGR 173, WDJ135709.62+334802.45, UCAC3 248-110047, SDSS J135709.58+334802.6, BD+34 2473, BD+34 2473B, Gaia DR3 1458024268941320064, SDSS J135709.49+334802.92, Gaia EDR3 1458024268941320064, 2MASS J13570968+3348035, GALEX J135709.5+334803, uvby98 620020173, G 165-B5B, ** LEP 65B, UBV 12402, LSPM J1357+3348E, USNO-B1.0 1238-00225870, SDSS J135709.49+334802.9, SDSS J135709.57+334802.5, G165-B5B, TIC 166668903, J1357+3348, UCAC4 620-049961, WD 1354+34, SDSS J135709.56+334802.6, WD 1354+340, CSI+34 2473 2, WDS J13571+3348B, Gaia DR2 1458024268941320064

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 SDSS DR12 Kilic et al. 2025 Kilic et al. 2020 MWDD H Gaia DR2 Bedard et al. 2017 Tremblay et al. 2017 Stilism Kepler et al. 2015 Gianninas et al. 2011 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999) Vincent et al. 2023
Right ascension 13 57 09.41 (0.03) 13 57 09.58 13 57 09.58 13 57 09.42 (0.04) 13 57 09.41 13 57 09.62 (0.03) 13 57 09.42 13 57 05.98
Declination 33 48 03.16 (0.03) 33 48 02.56 33 48 02.56 33 48 03.13 (0.04) 33 48 03.16 33 48 02.46 (0.03) 33 48 03.13 33 48 47.52
Spectral type DA DA DA DA DA DA DA DA DA3.5 DA DA5 DA
Effective temperature [K] 14501.0 (244) 14504.0 (244) 14062.0 14608.0 (315) 14490.0 (290) 15405.0 (36) 14490.0 (289) 15416.0 (189)
log(g) [cgs] 7.96 (0.01) 7.96 (0.01) 7.92 7.97 (0.06) 8.06 (0.05) 8.09 (0.01) 8.06 (0.05) 8.03 (0.01)
Mass [M] 0.59 (0.01) 0.586 (0.01) 0.566 0.57 (0.1) 0.6609999999999999 (0.005) 0.65 (0.03) 0.631 (0.009)
log(Luminosity) [L]
Cooling age [Gyr] 0.2132
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] 10.59 (0.04) 10.54 (0.07) 10.79 (0.4) 10.59 10.59 (0.04) 10.54 (0.07)
Distance [pc] 94.42 (0.4) 94.87 (0.7) 92.70 (5) 92.68 (4) 89.00 94.42 94.42 (0.4) 94.87 (0.7)
Composition H H H
Proper motion (right ascension) [mas/yr] -158.3203484 (0.03) -158.3090827 (0.07) -158.32 (0.03) -158.309
Proper motion (declination) [mas/yr] 43.76331281 (0.03) 43.91711024 (0.07) 43.763 (0.03) 43.917
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity yes
B magnitude 16.46 (0.1)
V magnitude 16.17 (0.01)
R magnitude 16.15
I magnitude
J magnitude 16.38 (0.1)
H magnitude 16.24 (0.2)
K magnitude
u magnitude 16.37 (0.006) 16.37 (0.006) 16.39 (0.02) 16.37 (0.006) 16.36 (0.005) 16.35
g magnitude 16.05 (0.004) 16.05 (0.004) 16.07 (0.02) 16.05 (0.004) 16.03 (0.004) 16.04
r magnitude 16.34 (0.004) 16.34 (0.004) 16.36 (0.01) 16.34 (0.004) 16.34 (0.004) 16.34
i magnitude 16.59 (0.005) 16.59 (0.005) 16.59 (0.01) 16.59 (0.005) 16.57 (0.005) 16.57
z magnitude 16.86 (0.01) 16.86 (0.01) 16.87 (0.02) 16.86 (0.01) 16.87 (0.01) 16.86
G magnitude 16.19 (0.002) 16.21 16.02 (0.004) 16.19 16.19 (0.003) 16.21
BP magnitude 16.16 (0.002) 16.14 16.14
RP magnitude 16.30 (0.003) 16.30 16.30
Pan g magnitude 16.09 (0.01)
Pan r magnitude 16.34 (0.005)
Pan i magnitude 16.59 (0.005)
Pan z magnitude 16.83 (0.008)
Pan y magnitude 17.00 (0.005)
E(B-V) 0.006

* Constant surface field

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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.