LAWD 34

All names: WD 1055-07, GJ 1140, GEN# +9.80163027, LPM 364, LP 671-11, Gaia EDR3 3763445409285757824, GSC 05500-01023, uvby98 980163027, G 163-27, WDJ105735.13-073123.18, LFT 753, LHS 2333, PSO J164.3938-07.5228, Gaia DR2 3763445409285757824, 105735.13-073123.18, J1057-0731, USNO 433, Gaia DR3 3763445409285757824, PG 1055-073, CSI-07-10551, LTT 4020, LAWD 34, CNS5 2677, TIC 148559575, TIC 148559577, L 898-25, NLTT 25836, EGGR 74, 2MASS J10573517-0731233, WD 1055-072, UBV M 42324, PLX 2555.02, 2MASS J10573453-0731171, UBV 10039, WISEA J105734.55-073120.0

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 Caron et al. 2023 O'Brien et al. 2022 Blouin et al. 2019 Gaia DR2 Stilism Holberg et al. 2016 Sion et al. 2014 Giammichele et al. 2012 Holberg et al. 2008 Bergeron et al. 2001 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 10 57 34.26 (0.02) 10 57 34.28 (0.04) 10 57 35.04 10 57 34.26 10 57 35.13 (0.02) 10 57 34.28 10 57 36.38
Declination -07 31 21.72 (0.02) -07 31 21.76 (0.03) -07 31 22.80 -07 31 21.72 -07 31 23.18 (0.02) -07 31 21.76 -07 31 15.96
Spectral type DC DC DC DC DC DA6.8 DC DA DC DC DC DA6
Effective temperature [K] 7096.0 (47) 7128.0 (10) 7100.0 (50) 7155.0 (155) 7421.0 (200) 7491.0 7491.0 (204) 7420.0 (200) 6844.0 (34)
log(g) [cgs] 8.24 (0.02) 8.24 (0.002) 8.25 (0.02) 8.31 (0.05) 8.32 (0.06) 8.42 (0.06) 8.42 (0.06) 8.20 (0.007)
Mass [M] 0.73 (0.01) 0.725 (0.002) 0.773 (0.03) 0.85 (0.04) 0.85 (0.04) 0.85 (0.04) 0.699 (0.006)
log(Luminosity) [L] -3.60 -3.62 (0.04)
Cooling age [Gyr] 2.4100 2.7430 (0.2) 2.9300 2.9300 3.0100 (0.2)
log(H/He) -3.4
log(C/He)
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 81.51 (0.02) 81.51 (0.02) 81.46 (0.04) 81.51 (0.02) 81.46 (0.04) 81.46 (0.04) 82.30 (4) 82.30 (4) 82.30 (4) 82.30 (4) 81.51 81.51 (0.02) 81.46 (0.04) 83.00 (4)
Distance [pc] 12.27 (0.004) 12.27 (0.003) 12.28 (0.006) 12.27 (0.003) 12.28 (0.006) 12.28 (0.006) 12.15 (0.5) 13.42 12.20 (0.5) 11.96 12.15 (0.5) 12.27 12.27 (0.004) 12.28 (0.006) 12.05 (0.6)
Composition He He He He He He
Proper motion (right ascension) [mas/yr] -816.9845554 (0.03) -817.0383867 (0.06) -816.985 (0.03) -817.0383867
Proper motion (declination) [mas/yr] 91.29802255 (0.02) 91.29543936 (0.05) 91.298 (0.02) 91.29543936
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 14.63 14.63 14.63 (0.005)
V magnitude 14.32 14.33 14.33 14.34 (0.005)
R magnitude 14.13 14.13 14.13 (0.005)
I magnitude 13.91 13.91 13.92 (0.006)
J magnitude 13.76 (0.002) 13.77 (0.03) 13.81 13.81 13.77 (0.03)
H magnitude 13.68 (0.003) 13.68 (0.03) 13.71 13.71 13.68 (0.03)
K magnitude 13.64 (0.004) 13.48 (0.04) 13.69 13.69 13.48 (0.04)
u magnitude
g magnitude 14.39 (0.002)
r magnitude 14.29 (0.0005)
i magnitude 14.31 (0.004)
z magnitude 14.38 (0.002)
G magnitude 14.24 (0.001) 14.26 14.24 14.24 (0.003) 14.26
BP magnitude 14.39 (0.001) 14.39 14.39
RP magnitude 13.96 (0.001) 13.97 13.97
Pan g magnitude 14.39 (0.0009) 14.39 (0.001) 14.39 (0.001)
Pan r magnitude 14.29 (0.0004) 14.29 (0.0005) 14.29 (0.001)
Pan i magnitude 14.31 (0.004) 14.31 (0.004) 14.31 (0.004)
Pan z magnitude 14.38 (0.002) 14.38 (0.002) 14.38 (0.002)
Pan y magnitude 14.45 (0.006) 14.45 (0.006) 14.45 (0.006)
E(B-V) 0.000

* 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.