EGGR 328

All names: Gaia DR2 4435778215414219520, Gaia EDR3 4435778215414219520, TIC 281892104, WD1636+057, G 138-49, WDJ163854.47+054041.63, LSPM J1638+0540, WD 1636+057, 2MASS J16385444+0540415, GEN# +9.80138049, GALEX J163854.4+054039, LHS 3230, USNO-B1.0 0956-00269781, WD 1636+05, J1638+0540, Gaia DR3 4435778215414219520, G138-49, NLTT 43274, 1636+057, EGGR 328

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 Caron et al. 2023 McCleery et al. 2020 Leggett et al. 2018 MWDD H MWDD HE Gaia DR2 Stilism Gianninas et al. 2011 Koester et al. 2009 Koester et al. 2001 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 16 38 54.14 (0.04) 16 38 54.15 (0.05) 16 38 54.15 (0.05) 16 38 54.50 16 38 54.14 16 38 54.47 (0.04) 16 38 54.15 16 38 55.51
Declination 05 40 34.83 (0.03) 05 40 35.04 (0.04) 05 40 35.04 (0.04) 05 40 40.00 05 40 34.83 05 40 41.63 (0.03) 05 40 35.04 05 40 49.80
Spectral type DA DA DA DA6.0 DA DA DA DA5.9 DA6
Effective temperature [K] 8496.0 (106) 8366.0 (8) 8497.3 (47) 8356.0 (247) 8396.0 8081.0 8560.0 (127) 8428.0 (11) 8702.0 (22) 8737.0 (64)
log(g) [cgs] 8.52 (0.03) 8.50 (0.002) 8.52 (0.01) 8.50 (0.04) 8.50 8.42 8.85 (0.06) 8.39 (0.01) 8.66 (0.03) 8.56 (0.01)
Mass [M] 0.928 (0.02) 0.915 (0.002) 0.916 (0.03) 0.919 0.848 1.13 (0.03) 1.02 0.959 (0.009)
log(Luminosity) [L]
Cooling age [Gyr] 2.6100 2.4850 (0.3) 2.4730 2.3710
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] 27.75 (0.05) 27.75 (0.05) 27.78 (0.06) 27.78 (0.06) 27.87 (0.4) 27.78 (0.06) 27.75 27.75 (0.05) 27.78 (0.06)
Distance [pc] 36.03 (0.07) 36.04 (0.06) 36.00 (0.08) 36.00 (0.08) 35.88 (0.6) 36.00 (0.08) 20.00 36.03 36.03 (0.07) 36.00 (0.08)
Composition H H H
Proper motion (right ascension) [mas/yr] -309.7633137 (0.06) -309.6013719 (0.1) -309.763 (0.06) -309.6013719
Proper motion (declination) [mas/yr] -425.1598037 (0.05) -424.95565 (0.09) -425.16 (0.05) -424.95565
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.00
V magnitude 15.76 15.76
R magnitude 16.20
I magnitude
J magnitude 15.96 (0.01) 16.06 (0.08)
H magnitude 15.88 (0.1) 15.90 (0.1)
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 16.33 (0.003) 16.35 16.35 16.33 16.33 (0.003) 16.35
BP magnitude 16.44 (0.003) 16.43 16.43
RP magnitude 16.13 (0.004) 16.14 16.14
Pan g magnitude 16.43 (0.0009) 16.43 (0.0009)
Pan r magnitude 16.41 (0.006) 16.41 (0.007)
Pan i magnitude 16.45 (0.002) 16.45 (0.002)
Pan z magnitude 16.56 (0.009) 16.56 (0.007)
Pan y magnitude 16.64 (0.0002) 16.64 (0.0002)
E(B-V) 0.001

* 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.