VizieR Online Data Catalog: J-PLUS white dwarf atmospheric parameters (Lopez-Sanjuan+, 2022)
Abstract
The catalog presents the inferred atmospheric parameters for the 5926 white dwarfs with r<19.5mag in common between the white dwarf catalog defined from Gaia EDR3 in Gentile Fusillo et al. (2021MNRAS.508.3877G, Cat. J/MNRAS/508/3877) and J-PLUS DR2 (Cenarro et al., 2019A&A...622A.176C). The J-PLUS twelve-band photometry is compared with theoretical models to derive the probability density functions (PDFs) for the effective temperature (Teff), the surface gravity, and the parallax by assuming H- and He-dominated atmopsheres. We used pure-H models to describe H-dominated atmospheres (Tremblay et al., 2011ApJ...730..128T, Cat. J/ApJ/730/128, 2013A&A...559A.104T), while mixed models with H/He =10-5 at Teff>6500K and pure-He models at Teff<6500K were used to describe He-dominated atmospheres (Cukanovaite et al., 2018MNRAS.481.1522C, 2019MNRAS.490.1010C). The mass-radius relation of Fontaine et al. (2001PASP..113..409F) for thick (H-atmospheres) and thin (He-atmospheres) hydrogen layers was assumed in the modeling. We obtained the summary statistics for each parameter by marginalizing the PDFs over the other parameters at a fixed atmospheric composition and performing a Gaussian fit to the resulting distribution. The reported parameters and their uncertainties are the median and the dispersion of the best-fitting Gaussian. We also provide the probability of having a H-dominated atmosphere (pH) for each source in the table. In those cases where pH is different from both zero and one, we included the atmospheric parameters for both H- and He-dominated atmospheres. These values should be weighted with the corresponding pH to provide meaningful results. The r-band magnitude and the mass were obtained as the PDF-weighted values from the models.
(1 data file).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- November 2021
- DOI:
- 10.26093/cds/vizier.36580079
- Bibcode:
- 2021yCat..36580079L
- Keywords:
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- Stars: white dwarf;
- Effective temperatures;
- Stars: masses;
- Optical