All names: LSPM J2149+5408, NLTT 52238, 2MASS J21495915+5408385, EGGR 450, WD 2148+53, Gaia DR2 2173871656498100096, Gaia EDR3 2173871656498100096, G 232-38, USNO-B1.0 1441-00377066, TIC 365280520, LHS 6387, WD 2148+539, G232-38, 2148+539, Gaia DR3 2173871656498100096
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Leggett et al. 2018 | MWDD H | Gaia DR2 | Stilism | Gianninas et al. 2011 | Gianninas et al. 2005 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 21 49 59.91 (0.05) | 21 49 59.88 (0.07) | 21 49 59.91 | 21 49 59.19 (0.05) | 21 49 58.03 | |||||||
Declination | 54 08 41.96 (0.04) | 54 08 41.88 (0.06) | 54 08 41.96 | 54 08 39.50 (0.04) | 54 08 33.00 | |||||||
Spectral type | DA4.9 | DA | DA | DA | DA4.2 | DA5 | ||||||
Effective temperature | [K] | 10320.0 (261) | 10886.0 | 11900.0 (187) | 11590.0 | 10896.0 (119) | ||||||
log(g) | [cgs] | 7.97 (0.09) | 7.87 | 8.09 (0.05) | 8.02 | 7.86 (0.01) | ||||||
Mass | [M☉] | 0.582 (0.07) | 0.528 | 0.66 (0.03) | 0.524 (0.01) | |||||||
log(Luminosity) | [L☉] | |||||||||||
Cooling age | [Gyr] | 0.5320 (0.07) | 0.4103 | |||||||||
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] | 9.30 (0.05) | 10.65 (0.8) | 9.36 (0.07) | 9.30 | 9.30 (0.05) | ||||||
Distance | [pc] | 107.52 (0.6) | 93.90 (7) | 106.85 (0.8) | 96.00 | 107.52 | 107.52 (0.6) | |||||
Composition | H | H | ||||||||||
Proper motion (right ascension) | [mas/yr] | 393.7549989 (0.07) | 393.80709 (0.1) | 393.755 (0.07) | ||||||||
Proper motion (declination) | [mas/yr] | 153.5146669 (0.05) | 153.6774841 (0.1) | 153.515 (0.05) | ||||||||
Variability | VAR | VAR | ||||||||||
Magnetic | ||||||||||||
Bd | [MG] | |||||||||||
Infrared excess (disk) | ||||||||||||
Binarity | ||||||||||||
B magnitude | 16.20 | |||||||||||
V magnitude | 16.40 | |||||||||||
R magnitude | 16.10 | |||||||||||
I magnitude | ||||||||||||
J magnitude | 15.92 (0.09) | |||||||||||
H magnitude | 15.42 (0.1) | |||||||||||
K magnitude | 15.00 (0.1) | |||||||||||
u magnitude | ||||||||||||
g magnitude | ||||||||||||
r magnitude | ||||||||||||
i magnitude | ||||||||||||
z magnitude | ||||||||||||
G magnitude | 16.85 (0.005) | 16.88 | 16.85 | 16.85 (0.003) | ||||||||
BP magnitude | 16.88 (0.005) | 16.87 | ||||||||||
RP magnitude | 16.85 (0.005) | 16.84 | ||||||||||
Pan g magnitude | 16.83 (0.009) | |||||||||||
Pan r magnitude | 16.96 (0.006) | |||||||||||
Pan i magnitude | 17.15 (0.007) | |||||||||||
Pan z magnitude | 17.33 (0.03) | |||||||||||
Pan y magnitude | 17.49 (0.01) | |||||||||||
E(B-V) | 0.012 | |||||||||||
Period #1 | [s] | 741.6 | ||||||||||
Amplitude #1 | [mma] | |||||||||||
Period #2 | [s] | 984.0 | ||||||||||
Amplitude #2 | [mma] | |||||||||||
Period #3 | [s] | 1147.4 | ||||||||||
Amplitude #3 | [mma] |
* Constant surface field
Spectra without link are available upon request
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.