All names: PSO J221.8515-17.7055, LHS 378, J1447-1742, 2MASS J14472548-1742151, Gaia EDR3 6282457918962299776, LP 801-9, NLTT 38361, TIC 331819924, GJ 3866, WD 1444-174, Gaia DR2 6282457918962299776, Gaia DR3 6282457918962299776, WDJ144725.34-174215.75, CNS5 3657, WISEA J144724.54-174219.3
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | Caron et al. 2023 | Blouin et al. 2019 | Gaia DR2 | Subasavage et al. 2017 | Stilism | Holberg et al. 2016 | Sion et al. 2014 | Giammichele et al. 2012 | Holberg et al. 2008 | Bergeron et al. 2001 | Bergeron et al. 1997 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 14 47 24.11 (0.05) | 14 47 24.15 (0.07) | 14 47 25.35 | 14 47 25.20 | 14 47 24.11 | 14 47 25.34 (0.05) | 14 47 24.15 | 14 47 28.82 | |||||||||||
| Declination | -17 42 21.24 (0.04) | -17 42 21.07 (0.04) | -17 42 01.08 | -17 42 14.40 | -17 42 21.24 | -17 42 15.76 (0.04) | -17 42 21.07 | -17 42 00.36 | |||||||||||
| Spectral type | DC | DC | DC | DC | DC | DC10.2 | DC | DC | DC | DC | DC10 | DC | |||||||
| Effective temperature | [K] | 4980.0 (37) | 4794.0 (17) | 4795.0 (30) | 5040.0 (60) | 5205.0 (14) | 4982.0 | 4982.0 (78) | 4960.0 (60) | 4990.0 (60) | 5062.0 (22) | ||||||||
| log(g) | [cgs] | 8.45 (0.02) | 8.35 (0.007) | 8.39 (0.01) | 8.49 (0.03) | 8.49 (0.08) | 8.37 (0.08) | 8.37 (0.08) | 8.40 (0.08) | 8.49 (0.009) | |||||||||
| Mass | [M☉] | 0.875 (0.01) | 0.796 (0.007) | 0.833 (0.01) | 0.9 (0.02) | 0.9 (0.05) | 0.82 (0.05) | 0.81 (0.05) | 0.83 (0.05) | 0.901 (0.008) | |||||||||
| log(Luminosity) | [L☉] | -4.33 (0.03) | -4.27 | -4.29 (0.05) | -4.29 (0.05) | ||||||||||||||
| Cooling age | [Gyr] | 7.9100 | 9.0600 (0.07) | 8.6000 (0.1) | 8.0800 | 8.5600 | 7.1900 (0.07) | 8.5200 (0.1) | |||||||||||
| log(H/He) | 0.3 | ||||||||||||||||||
| 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] | 75.19 (0.05) | 75.19 (0.05) | 75.17 (0.07) | 75.17 (0.07) | 75.17 (0.07) | 73.70 (0.6) | 69.00 (4) | 69.00 (4) | 69.00 (4) | 69.00 (4) | 69.00 (4) | 75.19 | 75.19 (0.05) | 75.17 (0.07) | 69.00 (4) | |||
| Distance | [pc] | 13.30 (0.009) | 13.30 (0.009) | 13.30 (0.01) | 13.30 (0.01) | 13.30 (0.01) | 13.57 (0.1) | 14.49 (0.8) | 14.49 | 14.50 (0.8) | 14.07 | 14.49 (0.8) | 14.49 (0.8) | 13.30 | 13.30 (0.009) | 13.30 (0.01) | 14.49 (0.8) | ||
| Composition | He | H | H | H | H | He | He | He | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -1098.518189 (0.06) | -1098.566342 (0.1) | -1098.518 (0.06) | -1098.566342 | ||||||||||||||
| Proper motion (declination) | [mas/yr] | -342.944211 (0.05) | -343.0627416 (0.09) | -342.944 (0.05) | -343.0627416 | ||||||||||||||
| Variability | |||||||||||||||||||
| Magnetic | |||||||||||||||||||
| Bd | [MG] | ||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||
| Binarity | |||||||||||||||||||
| B magnitude | 17.37 | 17.47 | 17.47 | 17.47 | 17.42 | ||||||||||||||
| V magnitude | 16.43 | 16.46 | 16.44 | 16.44 | 16.44 | 16.46 | |||||||||||||
| R magnitude | 15.90 | 15.95 | 15.95 | 15.95 | |||||||||||||||
| I magnitude | 15.44 | 15.43 | 15.43 | 15.43 | |||||||||||||||
| J magnitude | 14.98 (0.03) | 14.95 (0.03) | 14.95 (0.03) | 14.95 | 14.94 | 14.98 | 14.95 (0.03) | ||||||||||||
| H magnitude | 14.84 (0.03) | 14.64 (0.05) | 14.64 (0.05) | 14.64 | 14.79 | 14.84 | 14.64 (0.05) | ||||||||||||
| K magnitude | 14.65 (0.03) | 14.72 (0.1) | 14.72 (0.1) | 14.72 | 14.68 | 14.65 | 14.72 (0.1) | ||||||||||||
| u magnitude | |||||||||||||||||||
| g magnitude | 16.85 (0.009) | ||||||||||||||||||
| r magnitude | 16.14 (0.003) | ||||||||||||||||||
| i magnitude | 15.87 (0.004) | ||||||||||||||||||
| z magnitude | 15.79 (0.005) | ||||||||||||||||||
| G magnitude | 16.16 (0.006) | 16.17 | 16.16 | 16.16 (0.003) | 16.17 | ||||||||||||||
| BP magnitude | 16.64 (0.006) | 16.66 | 16.66 | ||||||||||||||||
| RP magnitude | 15.53 (0.004) | 15.53 | 15.53 | ||||||||||||||||
| Pan g magnitude | 16.76 (0.009) | 16.76 (0.009) | 16.85 (0.009) | ||||||||||||||||
| Pan r magnitude | 16.13 (0.003) | 16.13 (0.003) | 16.14 (0.003) | ||||||||||||||||
| Pan i magnitude | 15.87 (0.002) | 15.87 (0.002) | 15.87 (0.004) | ||||||||||||||||
| Pan z magnitude | 15.79 (0.003) | 15.79 (0.003) | 15.79 (0.005) | ||||||||||||||||
| Pan y magnitude | 15.71 (0.005) | 15.71 (0.005) | 15.72 (0.005) | ||||||||||||||||
| E(B-V) | 0.000 | ||||||||||||||||||
* 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.