All names: WISEA J154005.71+121937.7, WD 1537+124, Gaia DR2 1190510856519414144, WISE J154005.72+121937.7, 2MASS J15400571+1219375, SDSS J154005.74+121937.7, [SGR2010] J1540+1219, TIC 284107431, Gaia EDR3 1190510856519414144, WIRED J154005.73+121937.7, SDSS J154005.73+121937.7
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 40 05.72 (1) | 15 40 05.73 | 15 40 05.72 (2) | 15 40 05.74 | 15 40 05.73 | 15 40 05.78 | 15 40 05.74 | ||||
| Declination | 12 19 37.59 (1) | 12 19 37.78 | 12 19 37.59 (1) | 12 19 37.70 | 12 19 37.78 | 12 19 33.24 | 12 19 37.71 | ||||
| Spectral type | DA+M | DA+M | DA+M1 | DA1.5+M1 | DA+M | ||||||
| Effective temperature | [K] | 33458.0 (327) | 32972.0 (344) | 6301.0 (4) | |||||||
| log(g) | [cgs] | 7.85 (0.06) | 7.96 (0.09) | 5.03 (0.04) | |||||||
| Mass | [M☉] | 0.58 (0.03) | 0.63 (0.05) | ||||||||
| log(Luminosity) | [L☉] | -0.59 (0.04) | |||||||||
| Cooling age | [Gyr] | 0.0063 (0.0001) | |||||||||
| 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] | ||||||||||
| Distance | [pc] | 375.00 (22) | |||||||||
| Composition | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | ||||||||||
| Proper motion (declination) | [mas/yr] | ||||||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | yes | WDMS | ||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 14.66 (0.03) | ||||||||||
| H magnitude | 14.12 (0.05) | ||||||||||
| K magnitude | 13.91 (0.05) | ||||||||||
| u magnitude | 16.99 (0.008) | 16.97 | 16.99 (0.008) | 16.96 | 16.97 (0.02) | ||||||
| g magnitude | 17.06 (0.004) | 17.12 | 17.06 (0.004) | 17.06 | 17.12 (0.01) | ||||||
| r magnitude | 16.85 (0.004) | 16.93 | 16.85 (0.004) | 16.86 | 16.93 (0.01) | ||||||
| i magnitude | 16.31 (0.004) | 16.38 | 16.31 (0.004) | 16.32 | 16.38 (0.02) | ||||||
| z magnitude | 15.90 (0.006) | 15.95 | 15.90 (0.006) | 15.90 | 15.95 (0.02) | ||||||
| G magnitude | 17.08 (0.01) | 16.99 | |||||||||
| BP magnitude | 17.06 (0.01) | 17.06 | |||||||||
| RP magnitude | 15.93 (0.005) | 15.94 | |||||||||
| Pan g magnitude | 17.15 (0.006) | ||||||||||
| Pan r magnitude | 17.00 (0.008) | ||||||||||
| Pan i magnitude | 16.40 (0.01) | ||||||||||
| Pan z magnitude | 16.04 (0.009) | ||||||||||
| Pan y magnitude | 15.84 (0.003) | ||||||||||
| E(B-V) | 0.033 | ||||||||||
* 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.