J-PLUS: Beyond Spectroscopy. III. Stellar Parameters and Elemental-abundance Ratios for Five Million Stars from DR3
Abstract We present a catalog of stellar parameters (effective temperature T eff , surface gravity <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mi>log</mml:mi> <mml:mi>g</mml:mi> </mml:math> , age, and metallicity [Fe/H]) and elemental-abundance ratios ([C/Fe], [Mg/Fe], and [ α /Fe]) for some five million stars (4.5 million dwarfs and 0.5 million giant stars) in the Milky Way, based on stellar colors from the Javalambre Photometric Local Universe Survey (J-PLUS) DR3 and Gaia EDR3. These estimates are obtained through the construction of a large spectroscopic training set with parameters and abundances adjusted to uniform scales, and trained with a kernel principal component analysis. Owing to the seven narrow/medium-band filters employed by J-PLUS, we obtain precisions in the abundance estimates that are as good as or better than those derived from medium-resolution spectroscopy for stars covering a wide range of the parameter space: 0.10–0.20 dex for [Fe/H] and [C/Fe], and 0.05 dex for [Mg/Fe] and [ α /Fe]. Moreover, systematic errors due to the influence of molecular carbon bands on previous photometric-metallicity estimates (which only included two narrow/medium-band blue filters) have now been removed, resulting in photometric-metallicity estimates down to [Fe/H] ∼ −4.0, with typical uncertainties of 0.40 dex and 0.25 dex for dwarfs and giants, respectively. This large photometric sample should prove useful for the exploration of the assembly and chemical-evolution history of our Galaxy.
Authors
- J. S. Alcaniz (ORCID: https://orcid.org/0000-0003-2441-1413)
- Timothy C. Beers (ORCID: https://orcid.org/0000-0003-4573-6233)
- Haibo Yuan (ORCID: https://orcid.org/0000-0003-2471-2363)
- A. Ederoclite (ORCID: https://orcid.org/0000-0003-3656-5524)
- J. Hong (ORCID: https://orcid.org/0000-0002-2453-0853)
- Yang Huang (ORCID: https://orcid.org/0000-0003-3250-2876)
- F. Jiménez-Esteban (ORCID: https://orcid.org/0000-0002-6985-9476)
- Raúl E. Angulo (ORCID: https://orcid.org/0000-0003-2953-3970)
- L. Sodré (ORCID: https://orcid.org/0000-0002-3876-268X)
- Renato A. Dupke (ORCID: https://orcid.org/0000-0003-1477-3453)
- A. Marín-Franch (ORCID: https://orcid.org/0000-0002-9026-3933)
- C. López-Sanjuán (ORCID: https://orcid.org/0000-0002-5743-3160)
- D. Cristóbal-Hornillos
- J. Varela (ORCID: https://orcid.org/0000-0003-0286-5940)
- P. Cruz (ORCID: https://orcid.org/0000-0003-1793-200X)
- S. Daflon (ORCID: https://orcid.org/0000-0001-9205-2307)
- P. Coelho (ORCID: https://orcid.org/0000-0003-1846-4826)
- F. J. Galindo-Guil (ORCID: https://orcid.org/0000-0003-4776-9098)
- Kai Xiao (ORCID: https://orcid.org/0000-0001-8424-1079)
- C. Hernández–Monteagudo (ORCID: https://orcid.org/0000-0001-5471-9166)
- H. Vázquez Ramió (ORCID: https://orcid.org/0000-0003-3135-2191)
- Hongrui Gu (ORCID: https://orcid.org/0009-0007-5610-6495)
- Zhou Fan (ORCID: https://orcid.org/0000-0003-3067-3540)
- Jifeng Liu (ORCID: https://orcid.org/0000-0002-2874-2706)
- Young Sun Lee (ORCID: https://orcid.org/0000-0001-5297-4518)
- M. Moles
- Javier Cenarro
Publication Details
- Journal
- The Astrophysical Journal
- Published
- 2024-10-01
- DOI
- https://doi.org/10.3847/1538-4357/ad6b94
- Citations
- 18
- Primary Topic
- Stellar, planetary, and galactic studies
- Type
- article
- Field-Weighted Citation Impact
- 5.97
Funders
- National Natural Science Foundation of China
- National Key Research and Development Program of China