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| Main Authors: | , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2406.03310 |
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| _version_ | 1866913782035382272 |
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| author | Rodrigo, Carlos Cruz, Patricia Aguilar, John F. Aller, Alba Solano, Enrique Galvez-Ortiz, Maria Cruz Jimenez-Esteban, Francisco Mas-Buitrago, Pedro Bayo, Amelia Cortes-Contreras, Miriam Murillo-Ojeda, Raquel Bonoli, Silvia Cenarro, Javier Dupke, Renato Lopez-Sanjuan, Carlos Marin-Franch, Antonio de Oliveira, Claudia Mendes Moles, Mariano Taylor, Keith Varela, Jesus Ramio, Hector Vazquez |
| author_facet | Rodrigo, Carlos Cruz, Patricia Aguilar, John F. Aller, Alba Solano, Enrique Galvez-Ortiz, Maria Cruz Jimenez-Esteban, Francisco Mas-Buitrago, Pedro Bayo, Amelia Cortes-Contreras, Miriam Murillo-Ojeda, Raquel Bonoli, Silvia Cenarro, Javier Dupke, Renato Lopez-Sanjuan, Carlos Marin-Franch, Antonio de Oliveira, Claudia Mendes Moles, Mariano Taylor, Keith Varela, Jesus Ramio, Hector Vazquez |
| contents | This paper is focused on the segregation of FGK dwarf and giant stars through narrow-band photometric data using the Spanish Virtual Observatory (SVO) Filter Profile Service and associated photometric tools. We selected spectra from the MILES, STELIB, and ELODIE stellar libraries, and used SVO photometric tools to derive the synthetic photometry in 15 J-PAS narrow filters, which were especially selected to cover spectral features sensitive to gravity changes. Using machine-learning techniques as the Gaussian mixture model and the support vector machine, we defined several criteria based on J-PAS colours to discriminate between dwarf and giant stars. We selected five colour-colour diagrams that presented the most promising separation between both samples. Our results show an overall accuracy in the studied sample of $\sim$0.97 for FGK stars, although a dependence on the luminosity type and the stellar effective temperature was found. We also defined a colour-temperature relation for dwarf stars with effective temperatures between 4\,000 and 7\,000\,K, which allows one to estimate the stellar effective temperature from four J-PAS filters ($J0450$, $J0510$, $J0550$, and $J0620$). Additionally, we extended the study to M-type giant and dwarf stars, achieving a similar accuracy to that for FGK stars. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_03310 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Photometric segregation of dwarf and giant FGK stars using the SVO Filter Profile Service and photometric tools Rodrigo, Carlos Cruz, Patricia Aguilar, John F. Aller, Alba Solano, Enrique Galvez-Ortiz, Maria Cruz Jimenez-Esteban, Francisco Mas-Buitrago, Pedro Bayo, Amelia Cortes-Contreras, Miriam Murillo-Ojeda, Raquel Bonoli, Silvia Cenarro, Javier Dupke, Renato Lopez-Sanjuan, Carlos Marin-Franch, Antonio de Oliveira, Claudia Mendes Moles, Mariano Taylor, Keith Varela, Jesus Ramio, Hector Vazquez Solar and Stellar Astrophysics Astrophysics of Galaxies This paper is focused on the segregation of FGK dwarf and giant stars through narrow-band photometric data using the Spanish Virtual Observatory (SVO) Filter Profile Service and associated photometric tools. We selected spectra from the MILES, STELIB, and ELODIE stellar libraries, and used SVO photometric tools to derive the synthetic photometry in 15 J-PAS narrow filters, which were especially selected to cover spectral features sensitive to gravity changes. Using machine-learning techniques as the Gaussian mixture model and the support vector machine, we defined several criteria based on J-PAS colours to discriminate between dwarf and giant stars. We selected five colour-colour diagrams that presented the most promising separation between both samples. Our results show an overall accuracy in the studied sample of $\sim$0.97 for FGK stars, although a dependence on the luminosity type and the stellar effective temperature was found. We also defined a colour-temperature relation for dwarf stars with effective temperatures between 4\,000 and 7\,000\,K, which allows one to estimate the stellar effective temperature from four J-PAS filters ($J0450$, $J0510$, $J0550$, and $J0620$). Additionally, we extended the study to M-type giant and dwarf stars, achieving a similar accuracy to that for FGK stars. |
| title | Photometric segregation of dwarf and giant FGK stars using the SVO Filter Profile Service and photometric tools |
| topic | Solar and Stellar Astrophysics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2406.03310 |