All names: SDSS J091625.50+441557.1, SDSS J091625.51+441557.2, WIRED J091625.51+441557.2, 2MASS J09162551+4415574, SDSS J091625.50+441557.2, Gaia DR2 818626539053924224, Gaia DR3 818626539053924224, WD 0913+444, [HHD2009] SDSS J0916+4415, Gaia EDR3 818626539053924224, TIC 56912036, SDSS J091625.46+441557.2
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | 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 | 09 16 25.53 (0.4) | 09 16 25.51 | 09 16 25.53 (0.7) | 09 16 25.51 | 09 16 25.50 (0.4) | 09 16 25.51 | 09 16 24.89 | 09 16 25.51 | ||||
| Declination | 44 15 57.10 (0.3) | 44 15 57.20 | 44 15 57.11 (0.6) | 44 15 57.20 | 44 15 57.19 (0.3) | 44 15 57.21 | 44 15 51.12 | 44 15 57.23 | ||||
| Spectral type | DA+M | DA | DA+M | DA+M | DA dM | DA+M | ||||||
| Effective temperature | [K] | 18756.0 (579) | 19810.0 (620) | 8820.0 (56) | 8509.0 (69) | |||||||
| log(g) | [cgs] | 7.64 (0.1) | 7.72 (0.1) | 7.94 (0.08) | 7.50 (0.1) | |||||||
| Mass | [M☉] | 0.44 (0.05) | 0.48 (0.05) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.0501 | ||||||||||
| 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] | 4.06 (0.6) | 3.79 (1) | 4.06 (0.6) | ||||||||
| Distance | [pc] | 246.43 (36) | 264.18 (69) | 246.43 (36) | ||||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 17.33043645 (0.5) | 17.05511068 (1) | 17.33 (0.5) | -36.4 | |||||||
| Proper motion (declination) | [mas/yr] | -5.244892715 (0.4) | -5.965371987 (1) | -5.245 (0.4) | -0.1 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | WDMS | WDMS | |||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 16.41 (0.1) | |||||||||||
| H magnitude | 15.76 (0.2) | |||||||||||
| K magnitude | 15.44 (0.07) | |||||||||||
| u magnitude | 18.84 (0.02) | 18.85 | 18.82 (0.02) | 18.85 (0.03) | 18.85 | 18.87 (0.03) | ||||||
| g magnitude | 18.57 (0.008) | 18.58 | 18.57 (0.008) | 18.58 (0.02) | 18.58 | 18.57 (0.02) | ||||||
| r magnitude | 18.61 (0.009) | 18.61 | 18.61 (0.009) | 18.61 (0.03) | 18.61 | 18.60 (0.02) | ||||||
| i magnitude | 18.09 (0.008) | 18.11 | 18.09 (0.008) | 18.11 (0.02) | 18.11 | 18.10 (0.02) | ||||||
| z magnitude | 17.53 (0.02) | 17.55 | 17.54 (0.01) | 17.55 (0.02) | 17.55 | 17.54 (0.02) | ||||||
| G magnitude | 18.43 (0.02) | 18.41 | 18.43 (0.008) | |||||||||
| BP magnitude | 18.67 (0.02) | 18.62 | ||||||||||
| RP magnitude | 17.62 (0.01) | 17.64 | ||||||||||
| Pan g magnitude | 18.61 (0.008) | |||||||||||
| Pan r magnitude | 18.63 (0.01) | |||||||||||
| Pan i magnitude | 18.09 (0.006) | |||||||||||
| Pan z magnitude | 17.61 (0.005) | |||||||||||
| Pan y magnitude | 17.33 (0.009) | |||||||||||
| E(B-V) | 0.012 | |||||||||||
* 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.