PHL 411

All names: WD 2307+009, SDSS J230953.40+011213.2, SDSS J230953.44+011213.4, SDSS J230953.39+011213.2, SDSS J230953.43+011213.4, Gaia EDR3 2657498580470832384, GALEX J230953.4+011212, Gaia DR3 2657498580470832384, PHL 411, Gaia DR2 2657498576175242368, SDSS J230953.41+011213.2

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 MWDD H Gaia DR2 Stilism Tremblay et al. 2011 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Kleinman et al. 2004 Vincent et al. 2023
Right ascension 23 09 53.46 (0.08) 23 09 53.44 23 09 53.46 (0.1) 23 09 53.46 23 09 53.41 (0.08) 23 09 53.42 23 09 52.49 23 09 53.40 23 09 53.40
Declination 01 12 13.52 (0.07) 01 12 13.44 01 12 13.51 (0.09) 01 12 13.52 01 12 13.26 (0.07) 01 12 13.27 01 12 11.16 01 12 13.20 01 12 13.21
Spectral type DA DA DA DA DA DA DA1.6 DA DA
Effective temperature [K] 31364.0 (93) 25226.0 31420.0 (140) 28820.0 (1036) 30882.0 (189) 31054.0 (153) 30958.0 (190)
log(g) [cgs] 8.45 (0.02) 8.36 8.48 (0.03) 8.50 (0.04) 8.59 (0.03) 8.53 (0.03) 8.60 (0.03)
Mass [M] 0.92 (0.01) 0.847 0.94 (0.02) 0.94 (0.03) 0.944 (0.01)
log(Luminosity) [L] -1.11 (0.02)
Cooling age [Gyr] 0.0275 (0.003) 0.0650 0.0427
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] 6.65 (0.1) 6.68 (0.1) 6.65 6.65 (0.1)
Distance [pc] 150.29 (2) 149.72 (3) 150.29 150.29 (2)
Composition H H H
Proper motion (right ascension) [mas/yr] 48.38774791 (0.1) 48.52079583 (0.2) 48.388 (0.1) 46.0 44.0
Proper motion (declination) [mas/yr] 16.29338409 (0.09) 16.27176698 (0.2) 16.293 (0.09) 19.9 21.0
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.90
V magnitude 17.10
R magnitude
I magnitude
J magnitude 17.42 (0.02)
H magnitude 17.48 (0.09)
K magnitude 17.80 (0.2)
u magnitude 16.27 (0.006) 16.27 (0.006) 16.34 (0.03) 16.33 16.34 (0.03) 16.33 (0.03)
g magnitude 16.53 (0.004) 16.53 (0.004) 16.57 (0.02) 16.57 16.59 (0.02) 16.57 (0.03)
r magnitude 16.98 (0.005) 16.99 (0.005) 16.98 (0.02) 16.99 16.98 (0.02) 16.99 (0.02)
i magnitude 17.32 (0.006) 17.33 (0.006) 17.31 (0.01) 17.31 17.31 (0.01) 17.31 (0.01)
z magnitude 17.60 (0.01) 17.60 (0.01) 17.61 (0.02) 17.61 17.61 (0.02) 17.61 (0.02)
G magnitude 16.78 (0.004) 16.79 16.78 16.78 (0.003)
BP magnitude 16.65 (0.004) 16.63
RP magnitude 17.03 (0.01) 17.04
Pan g magnitude 16.61 (0.003)
Pan r magnitude 17.00 (0.003)
Pan i magnitude 17.35 (0.006)
Pan z magnitude 17.62 (0.008)
Pan y magnitude 17.83 (0.009)
E(B-V) 0.031

* 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.