All names: NLTT 11839, 2MASS J03470682+0138475, J0347+0138, WD 0344+014, 03471+0138, Gaia DR2 3270079526697712768, Gaia DR3 3270079526697712768, USNO-B1.0 0916-00038029, PSO J056.7793+01.6449, LSPM J0347+0138, LHS 5084, Gaia EDR3 3270079526697712768, PM J03471+0138, LP 593-56, CNS5 956, TIC 453830773, WDJ034706.83+013847.64
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Blouin et al. 2019 | Gaia DR2 | Subasavage et al. 2017 | Stilism | Holberg et al. 2016 | Limoges et al. 2015 | Sion et al. 2014 | Giammichele et al. 2012 | Holberg et al. 2008 | Subasavage et al. 2007 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 03 47 07.08 (0.05) | 03 47 07.07 (0.06) | 03 47 07.07 (0.06) | 03 47 06.83 | 03 47 06.72 | 03 47 06.82 | 03 47 07.08 | 03 47 06.83 (0.05) | 03 47 07.07 | 03 47 06.26 | ||||||||||
| Declination | 01 38 41.11 (0.03) | 01 38 41.32 (0.04) | 01 38 41.32 (0.04) | 01 38 04.06 | 01 38 45.60 | 01 38 47.50 | 01 38 41.11 | 01 38 47.64 (0.03) | 01 38 41.32 | 01 38 43.80 | ||||||||||
| Spectral type | DC | DC | DC | DC | DC | DC | DQ | DC9.9 | DC | DC | DC | DC: | DQ9 | DC9.9 | ||||||
| Effective temperature | [K] | 4959.0 (29) | 5045.0 (10) | 4908.7 (17) | 4615.0 (50) | 4990.0 (100) | 5170.0 (171) | 4850.0 (76) | 5170.0 | 5170.0 (171) | 5084.0 (91) | 4967.0 (22) | ||||||||
| log(g) | [cgs] | 7.88 (0.02) | 7.96 (0.005) | 7.85 (0.02) | 7.66 (0.02) | 7.93 (0.06) | 8.00 (0) | 8.00 (0) | (0) | 7.88 (0.01) | ||||||||||
| Mass | [M☉] | 0.508 (0.01) | 0.553 (0.005) | 0.385 (0.01) | 0.53 (0.05) | 0.58 (0) | 0.57 (0.1) | 0.58 (0) | 0.51 (0.009) | |||||||||||
| log(Luminosity) | [L☉] | -4.02 (0.05) | -4.11 | -3.99 | ||||||||||||||||
| Cooling age | [Gyr] | 5.0300 | 3.5760 (0.2) | 5.0900 (0.5) | 4.8100 | 4.8300 | ||||||||||||||
| 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] | 49.58 (0.06) | 49.58 (0.06) | 49.62 (0.07) | 49.62 (0.07) | 49.62 (0.07) | 49.62 (0.07) | 50.46 (1) | 49.58 | 49.58 (0.06) | 49.62 (0.07) | |||||||||
| Distance | [pc] | 20.17 (0.02) | 20.17 (0.02) | 20.15 (0.03) | 20.15 (0.03) | 20.15 (0.03) | 20.15 (0.03) | 19.82 (0.4) | 20.78 (0.5) | 17.90 (0.4) | 20.60 (1) | 19.90 | 19.90 | 20.17 | 20.17 (0.02) | 20.15 (0.03) | ||||
| Composition | H | He | He | H | He | H | He | He | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 233.9766878 (0.05) | 233.8646813 (0.1) | 233.977 (0.05) | 233.8646813 | |||||||||||||||
| Proper motion (declination) | [mas/yr] | -407.7161409 (0.04) | -407.6121289 (0.1) | -407.716 (0.04) | -407.6121289 | |||||||||||||||
| Variability | ||||||||||||||||||||
| Magnetic | ||||||||||||||||||||
| Bd | [MG] | |||||||||||||||||||
| Infrared excess (disk) | ||||||||||||||||||||
| Binarity | ||||||||||||||||||||
| B magnitude | 16.70 | |||||||||||||||||||
| V magnitude | 16.51 | 16.52 | 16.52 | 16.52 | ||||||||||||||||
| R magnitude | 16.02 | 16.00 | 15.80 | |||||||||||||||||
| I magnitude | 15.54 | 15.54 | 15.54 | |||||||||||||||||
| J magnitude | 14.98 (0.005) | 15.00 (0.04) | 15.00 (0.04) | 15.00 | 15.00 (0.04) | 15.00 (0.04) | ||||||||||||||
| H magnitude | 14.87 (0.1) | 14.87 (0.1) | 14.87 (0.1) | 14.88 | 14.87 (0.09) | 14.87 (0.1) | ||||||||||||||
| K magnitude | 14.70 (0.1) | 14.70 (0.1) | 14.70 (0.1) | 14.70 | 14.70 (0.1) | 14.70 (0.1) | ||||||||||||||
| u magnitude | ||||||||||||||||||||
| g magnitude | 16.86 (0.003) | |||||||||||||||||||
| r magnitude | 16.24 (0.002) | |||||||||||||||||||
| i magnitude | 15.98 (0.003) | |||||||||||||||||||
| z magnitude | 15.90 (0.01) | |||||||||||||||||||
| G magnitude | 16.27 (0.004) | 16.28 | 16.28 | 16.27 | 16.27 (0.003) | 16.28 | ||||||||||||||
| BP magnitude | 16.74 (0.004) | 16.77 | 16.77 | |||||||||||||||||
| RP magnitude | 15.63 (0.003) | 15.64 | 15.64 | |||||||||||||||||
| Pan g magnitude | 16.86 (0.003) | 16.86 (0.003) | 16.86 (0.003) | |||||||||||||||||
| Pan r magnitude | 16.24 (0.001) | 16.24 (0.002) | 16.24 (0.001) | |||||||||||||||||
| Pan i magnitude | 15.98 (0.003) | 15.98 (0.003) | 15.98 (0.003) | |||||||||||||||||
| Pan z magnitude | 15.90 (0.01) | 15.90 (0.01) | 15.90 (0.01) | |||||||||||||||||
| Pan y magnitude | 15.87 (0.006) | 15.87 (0.006) | 15.87 (0.006) | |||||||||||||||||
| 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.