J-PLUS: Beyond Spectroscopy III. Stellar Parameters and Elemental-abundance Ratios for Five Million Stars from DR3
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arXiv
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| Natura: | Preprint |
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2024
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| author | Huang, Yang Beers, Timothy C. Xiao, Kai Yuan, Haibo Lee, Young Sun Gu, Hongrui Hong, Jihye Liu, Jifeng Fan, Zhou Coelho, Paula Cruz, Patricia Galindo-Guil, F. J. Daflon, Simone Jiménez-Esteban, Fran Cenarro, Javier Cristóbal-Hornillos, David Hernández-Monteagudo, Carlos López-Sanjuan, Carlos Marín-Franch, Antonio Moles, Mariano Varela, Jesús Ramírez, Héctor Vázquez Alcaniz, Jailson Dupke, Renato Ederoclite, Alessandro Sodré Jr., Laerte Angulo, Raul E. |
| author_facet | Huang, Yang Beers, Timothy C. Xiao, Kai Yuan, Haibo Lee, Young Sun Gu, Hongrui Hong, Jihye Liu, Jifeng Fan, Zhou Coelho, Paula Cruz, Patricia Galindo-Guil, F. J. Daflon, Simone Jiménez-Esteban, Fran Cenarro, Javier Cristóbal-Hornillos, David Hernández-Monteagudo, Carlos López-Sanjuan, Carlos Marín-Franch, Antonio Moles, Mariano Varela, Jesús Ramírez, Héctor Vázquez Alcaniz, Jailson Dupke, Renato Ederoclite, Alessandro Sodré Jr., Laerte Angulo, Raul E. |
| contents | We present a catalog of stellar parameters (effective temperature $T_{\rm eff}$, surface gravity $\log g$, 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 giants stars) in the Milky Way, based on stellar colors from the Javalambre Photometric Local Universe Survey (J-PLUS) DR3 and \textit{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 or better than 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] $\sim -4.0$, with typical uncertainties of 0.25 dex and 0.40 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_02171 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | J-PLUS: Beyond Spectroscopy III. Stellar Parameters and Elemental-abundance Ratios for Five Million Stars from DR3 Huang, Yang Beers, Timothy C. Xiao, Kai Yuan, Haibo Lee, Young Sun Gu, Hongrui Hong, Jihye Liu, Jifeng Fan, Zhou Coelho, Paula Cruz, Patricia Galindo-Guil, F. J. Daflon, Simone Jiménez-Esteban, Fran Cenarro, Javier Cristóbal-Hornillos, David Hernández-Monteagudo, Carlos López-Sanjuan, Carlos Marín-Franch, Antonio Moles, Mariano Varela, Jesús Ramírez, Héctor Vázquez Alcaniz, Jailson Dupke, Renato Ederoclite, Alessandro Sodré Jr., Laerte Angulo, Raul E. Solar and Stellar Astrophysics Astrophysics of Galaxies We present a catalog of stellar parameters (effective temperature $T_{\rm eff}$, surface gravity $\log g$, 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 giants stars) in the Milky Way, based on stellar colors from the Javalambre Photometric Local Universe Survey (J-PLUS) DR3 and \textit{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 or better than 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] $\sim -4.0$, with typical uncertainties of 0.25 dex and 0.40 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. |
| title | J-PLUS: Beyond Spectroscopy III. Stellar Parameters and Elemental-abundance Ratios for Five Million Stars from DR3 |
| topic | Solar and Stellar Astrophysics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2408.02171 |