All names: WD 1541+558, Gaia DR2 1598527625742159232, Gaia EDR3 1598527625742159232, SDSS J154221.86+553957.2, WIRED J154221.86+553957.2, SDSS J154221.86+553957.3, Gaia DR3 1598527625742159232, SDSS J154221.85+553957.1
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Stilism | sdss-wdms.org (29/04/2016) | Tremblay et al. 2011 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 42 21.86 (0.2) | 15 42 21.87 | 15 42 21.86 | 15 42 21.85 (0.2) | 15 42 21.86 | 15 42 21.00 | 15 42 21.86 | |||||
| Declination | 55 39 57.10 (0.2) | 55 39 57.23 | 55 39 57.20 | 55 39 57.18 (0.2) | 55 39 57.18 | 55 39 55.44 | 55 39 57.29 | |||||
| Spectral type | DA+M | DA+M | DA | DA | DA+M | DA+M | DA+M | |||||
| Effective temperature | [K] | 42914.0 (2357) | 41510.0 (2243) | 42760.0 (2890) | 7626.0 (63) | 10161.0 (98) | ||||||
| log(g) | [cgs] | 7.48 (0.2) | 7.72 (0.2) | 7.47 (0.3) | 8.98 (0.03) | 8.56 (0.6) | ||||||
| Mass | [M☉] | 0.46 (0.08) | 0.55 (0.1) | 0.46 (0.1) | ||||||||
| log(Luminosity) | [L☉] | 0.11 (0.2) | ||||||||||
| Cooling age | [Gyr] | 0.0009 (0.0008) | 0.0028 | |||||||||
| 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] | 0.91 (0.2) | 0.91 (0.2) | |||||||||
| Distance | [pc] | 1103.76 (250) | 282.00 (82) | 1103.75 (250) | ||||||||
| Composition | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 5.17396159 (0.2) | 5.174 (0.2) | 6.5 | ||||||||
| Proper motion (declination) | [mas/yr] | -4.983834717 (0.3) | -4.984 (0.3) | -6.6 | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | WDMS | yes | WDMS | ||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 18.55 (0.01) | 18.57 | 18.55 (0.01) | 18.57 (0.02) | 18.56 | 18.57 (0.02) | ||||||
| g magnitude | 18.86 (0.009) | 18.93 | 18.86 (0.009) | 18.93 (0.02) | 18.92 | 18.94 (0.02) | ||||||
| r magnitude | 19.18 (0.01) | 19.27 | 19.18 (0.01) | 19.27 (0.02) | 19.27 | 19.28 (0.02) | ||||||
| i magnitude | 19.01 (0.02) | 19.14 | 19.01 (0.01) | 19.14 (0.02) | 19.15 | 19.15 (0.02) | ||||||
| z magnitude | 18.73 (0.04) | 18.86 | 18.73 (0.04) | 18.86 (0.04) | 18.87 | 18.88 (0.04) | ||||||
| G magnitude | 19.19 (0.02) | 19.19 (0.004) | ||||||||||
| BP magnitude | 18.94 (0.02) | |||||||||||
| RP magnitude | 18.66 (0.04) | |||||||||||
| Pan g magnitude | 18.91 (0.02) | |||||||||||
| Pan r magnitude | 19.29 (0.008) | |||||||||||
| Pan i magnitude | 19.16 (0.04) | |||||||||||
| Pan z magnitude | 18.91 (0.02) | |||||||||||
| Pan y magnitude | 18.65 (0.02) | |||||||||||
| E(B-V) | 0.020 | |||||||||||
* 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.