WD 1540+236
All names: SDSS J154234.64+232939.8, LP 384-38, WD 1540+236, PM J15425+2329, 2MASS J15423462+2329426, Gaia DR3 1218051664291152000, TIC 347504087, NLTT 40992, 15425+2329, Gaia EDR3 1218051664291152000, Gaia DR2 1218051664291152000, 1540+236, SDSS J154234.65+232939.8, LSPM J1542+2329, WDJ154234.63+232941.56, J1542+2329, PSO J235.6444+23.4935, USNO-B1.0 1134-00234786, GALEX J154234.6+232940
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | O'Brien et al. 2024 | Caron et al. 2023 | Kilic et al. 2020 | McCleery et al. 2020 | Blouin et al. 2019 | Leggett et al. 2018 | MWDD H | Gaia DR2 | Stilism | Limoges et al. 2015 | Kawka et Vennes 2006 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 42 34.69 (0.03) | 15 42 34.69 (0.05) | 15 42 34.69 (0.05) | 15 42 34.69 | 15 42 34.63 (0.03) | 15 42 34.69 | 15 42 34.78 | ||||||||||||
| Declination | 23 29 35.03 (0.04) | 23 29 35.23 (0.05) | 23 29 35.23 (0.05) | 23 29 35.03 | 23 29 41.56 (0.04) | 23 29 35.23 | 23 29 36.60 | ||||||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA8.5 | DA | DA | DA | DA | DA | DA8.8 | ||||||
| Effective temperature | [K] | 5936.0 (22) | 5839.0 (43) | 5951.0 (17) | 5937.0 (22) | 5840.2 (29) | 5855.0 (40) | 5915.0 (117) | 5852.0 | 6250.0 (113) | 5730.0 (100) | 5993.0 (27) | |||||||
| log(g) | [cgs] | 8.21 (0.006) | 8.17 (0.02) | 8.22 (0.006) | 8.21 (0.007) | 8.18 (0.02) | 8.19 (0.02) | 8.25 (0.04) | 8.18 | 8.82 (0.2) | 8.20 (0.3) | 8.23 (0.009) | |||||||
| Mass | [M☉] | 0.722 (0.007) | 0.694 (0.01) | 0.73 (0.005) | 0.723 (0.006) | 0.706 (0.01) | 0.744 (0.03) | 0.7 | 1.11 (0.1) | 0.71 (0.2) | 0.736 (0.008) | ||||||||
| log(Luminosity) | [L☉] | -4.20 | |||||||||||||||||
| Cooling age | [Gyr] | 4.1300 | 3.8870 (0.2) | 4.1890 (0.4) | 3.8090 | ||||||||||||||
| 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] | 35.99 (0.05) | 35.99 (0.05) | 36.02 (0.07) | 36.02 (0.07) | 36.02 (0.07) | 36.93 (0.5) | 36.02 (0.07) | 35.99 | 35.99 (0.05) | 36.02 (0.07) | ||||||||
| Distance | [pc] | 27.79 (0.04) | 27.79 (0.04) | 27.76 (0.05) | 27.76 (0.05) | 27.76 (0.05) | 27.08 (0.4) | 27.76 (0.05) | 19.60 (0.8) | 27.00 | 27.79 | 27.79 (0.04) | 27.76 (0.05) | ||||||
| Composition | H | H | H | H | H | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | 48.64382917 (0.05) | 48.63613814 (0.09) | 48.644 (0.04) | 48.63613814 | ||||||||||||||
| Proper motion (declination) | [mas/yr] | -408.5254894 (0.06) | -408.5779088 (0.1) | -408.525 (0.06) | -408.5779088 | ||||||||||||||
| Variability | |||||||||||||||||||
| Magnetic | |||||||||||||||||||
| Bd | [MG] | ||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||
| Binarity | |||||||||||||||||||
| B magnitude | 17.00 | ||||||||||||||||||
| V magnitude | |||||||||||||||||||
| R magnitude | 16.30 | ||||||||||||||||||
| I magnitude | |||||||||||||||||||
| J magnitude | 15.64 (0.008) | 15.76 (0.07) | 15.76 (0.07) | ||||||||||||||||
| H magnitude | 15.48 (0.1) | 15.48 (0.1) | 15.48 (0.1) | ||||||||||||||||
| K magnitude | 15.76 (0.3) | 15.76 (0.3) | 15.76 (0.3) | ||||||||||||||||
| u magnitude | 17.90 (0.01) | 17.90 (0.01) | 17.90 (0.01) | 0.95 | |||||||||||||||
| g magnitude | 16.95 (0.009) | 16.98 (0.004) | |||||||||||||||||
| r magnitude | 16.60 (0.003) | 16.59 (0.005) | |||||||||||||||||
| i magnitude | 16.46 (0.004) | 16.43 (0.005) | |||||||||||||||||
| z magnitude | 16.43 (0.005) | 16.41 (0.009) | |||||||||||||||||
| G magnitude | 16.60 (0.005) | 16.61 | 16.61 | 16.60 | 16.60 (0.003) | 16.61 | |||||||||||||
| BP magnitude | 16.91 (0.005) | 16.91 | 16.91 | ||||||||||||||||
| RP magnitude | 16.11 (0.003) | 16.12 | 16.12 | ||||||||||||||||
| Pan g magnitude | 16.95 (0.008) | 16.95 (0.008) | 16.95 (0.008) | ||||||||||||||||
| Pan r magnitude | 16.60 (0.003) | 16.60 (0.003) | 16.60 (0.003) | ||||||||||||||||
| Pan i magnitude | 16.46 (0.004) | 16.46 (0.004) | 16.46 (0.004) | ||||||||||||||||
| Pan z magnitude | 16.43 (0.005) | 16.43 (0.005) | 16.43 (0.005) | ||||||||||||||||
| Pan y magnitude | 16.42 (0.004) | 16.42 (0.005) | 16.43 (0.005) | ||||||||||||||||
| E(B-V) | 0.002 | ||||||||||||||||||
* Constant surface field
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