WD 1536+520

All names: SDSS J153725.71+515126.9, WD 1536+520, SDSS J153725.72+515126.9, Gaia EDR3 1595298501827000960, SBSS 1536+520, SDSS J153725.72+515126.90, Gaia DR3 1595298501827000960, WIRED J153725.71+515126.9, GALEX J153725.7+515126, Gaia DR2 1595298501827000960, SDSS J153725.68+515127.0, SDSS J153725.71+515126.8, SDSS J153725.72+515127.0

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD H Gaia DR2 Stilism Farihi et al. 2016 Koester & Kepler 2015 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 15 37 25.66 (0.06) 15 37 25.72 15 37 25.66 (0.09) 15 37 25.66 15 37 25.73 (0.06) 15 37 25.72 15 37 25.58 15 37 25.72
Declination 51 51 27.10 (0.06) 51 51 26.85 51 51 27.10 (0.1) 51 51 27.10 51 51 26.83 (0.06) 51 51 27.00 51 51 25.56 51 51 26.92
Spectral type DAB DBAZ DB DBA DBA DBA DBA DB
Effective temperature [K] 20199.0 18850.0 16709.0 20800.0 (800) 17450.0 (40) 19687.0 (907) 25793.0 (251) 24926.0 (259)
log(g) [cgs] 7.87 7.95 7.70 7.96 (0.1) 7.75 (0.03) 8.00 (0.04) 8.36 (0.03) 8.20 (0.03)
Mass [M] 0.527 0.568 0.46 0.58 (0.05) 0.599 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.0807 0.0620
log(H/He) -2.157 -1.7 (0.2) -3.12 (0.1)
log(C/He) <-4.20
log(Ca/He) -5.28 (0.2) <-6.46
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] 4.98 (0.07) 4.88 (0.1) 4.98 4.98 (0.07)
Distance [pc] 200.74 (3) 204.99 (5) 217.00 (15) 213.00 200.74 200.74 (3)
Composition H He
Proper motion (right ascension) [mas/yr] -37.51680021 (0.07) -37.78943687 (0.2) -37.517 (0.07) -32.9
Proper motion (declination) [mas/yr] 17.28643488 (0.08) 16.92001372 (0.3) 17.286 (0.08) 13.7
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 16.93 (0.007) 16.93 (0.007) 16.91 (0.01) 16.91 16.93 (0.01)
g magnitude 17.04 (0.004) 17.04 (0.004) 17.05 (0.01) 17.04 17.05 (0.01)
r magnitude 17.41 (0.005) 17.41 (0.005) 17.42 (0.01) 17.42 17.42 (0.01)
i magnitude 17.68 (0.007) 17.68 (0.007) 17.66 (0.02) 17.66 17.68 (0.02)
z magnitude 17.94 (0.02) 17.94 (0.02) 17.94 (0.03) 17.94 17.95 (0.03)
G magnitude 17.21 (0.005) 17.23 17.21 17.21 (0.003)
BP magnitude 17.14 (0.005) 17.05
RP magnitude 17.37 (0.01) 17.35
Pan g magnitude 17.09 (0.005)
Pan r magnitude 17.40 (0.008)
Pan i magnitude 17.69 (0.004)
Pan z magnitude 17.93 (0.007)
Pan y magnitude 18.13 (0.01)
E(B-V) 0.017

* 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.