A comprehensive study of $δ$ Scuti-type pulsators in eclipsing binaries: oscillating eclipsing Algols
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| author | Pawar, T. B. Miszuda, A. Hełminiak, K. G. Marcadon, F. Moharana, A. Pawar, G. Konacki, M. |
| author_facet | Pawar, T. B. Miszuda, A. Hełminiak, K. G. Marcadon, F. Moharana, A. Pawar, G. Konacki, M. |
| contents | Eclipsing double-lined spectroscopic binaries hosting $δ$ Scuti-type pulsators offer a unique laboratory for simultaneously constraining stellar geometry and interior structure. In this study, we present a comprehensive analysis of five oscillating eclipsing Algol binaries. By combining high-precision, short-cadence TESS photometry with multi-epoch high-resolution spectroscopy, we derive precise stellar and orbital parameters. Frequency power spectra were obtained using residuals from binary modelling. We further investigate the evolutionary history of these systems using a grid of MESA binary evolution simulations. Our analysis suggests that the systems must have undergone either case A or case B mass transfer, with the primary components repositioned in the Hertzsprung-Russell diagram and now pulsating in the $δ$ Scuti regime, while the cooler secondaries are underluminous and inflated, filling their Roche lobes. This study contributes to the growing catalog of well-characterised oEA systems and our understanding of the effects of mass-transfer on the fate of these short-period binaries. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_20626 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A comprehensive study of $δ$ Scuti-type pulsators in eclipsing binaries: oscillating eclipsing Algols Pawar, T. B. Miszuda, A. Hełminiak, K. G. Marcadon, F. Moharana, A. Pawar, G. Konacki, M. Solar and Stellar Astrophysics Eclipsing double-lined spectroscopic binaries hosting $δ$ Scuti-type pulsators offer a unique laboratory for simultaneously constraining stellar geometry and interior structure. In this study, we present a comprehensive analysis of five oscillating eclipsing Algol binaries. By combining high-precision, short-cadence TESS photometry with multi-epoch high-resolution spectroscopy, we derive precise stellar and orbital parameters. Frequency power spectra were obtained using residuals from binary modelling. We further investigate the evolutionary history of these systems using a grid of MESA binary evolution simulations. Our analysis suggests that the systems must have undergone either case A or case B mass transfer, with the primary components repositioned in the Hertzsprung-Russell diagram and now pulsating in the $δ$ Scuti regime, while the cooler secondaries are underluminous and inflated, filling their Roche lobes. This study contributes to the growing catalog of well-characterised oEA systems and our understanding of the effects of mass-transfer on the fate of these short-period binaries. |
| title | A comprehensive study of $δ$ Scuti-type pulsators in eclipsing binaries: oscillating eclipsing Algols |
| topic | Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2502.20626 |