Period-Luminosity Relationship for $δ$ Scuti Stars Revisited
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arXiv
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| Format: | Preprint |
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2024
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| author | Poro, Atila Jafarzadeh, S. Javad Harzandjadidi, Roghaye Madani, Mohammad Bozorgzadeh, Elnaz Jahangiri, Esfandiar Sarostad, Ahmad Alizadehsabegh, Ailar Hadizadeh, Maryam EsmaeiliVakilabadi, Mohammad |
| author_facet | Poro, Atila Jafarzadeh, S. Javad Harzandjadidi, Roghaye Madani, Mohammad Bozorgzadeh, Elnaz Jahangiri, Esfandiar Sarostad, Ahmad Alizadehsabegh, Ailar Hadizadeh, Maryam EsmaeiliVakilabadi, Mohammad |
| contents | The Gaia DR3 parallax approach was used to estimate the absolute parameters of 2375 Delta Scuti stars from the ASAS catalog. The selected stars have a variety of observational characteristics, with a higher than 80% probability of being Delta Scuti stars. We have displayed all the stars in the Hertzsprung-Russell (H-R) diagram along with the Delta Scuti instability strip, the Zero Age Main Sequence (ZAMS), and the Terminal-Age Main Sequence (TAMS). Then, we determined which fundamental and overtone modes each star belongs to using pulsation constant (Q) calculations. In addition, we evaluated the parameters in the Q calculation equation using three machine learning methods, which showed that surface gravity and temperature have the greatest effect on its calculation. The Period-Luminosity (P-L) relationship of the Delta Scuti stars was also revisited. Eventually, using least squares linear regression, we made four linear fits for fundamental and overtone modes and updated their relationships. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_01091 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Period-Luminosity Relationship for $δ$ Scuti Stars Revisited Poro, Atila Jafarzadeh, S. Javad Harzandjadidi, Roghaye Madani, Mohammad Bozorgzadeh, Elnaz Jahangiri, Esfandiar Sarostad, Ahmad Alizadehsabegh, Ailar Hadizadeh, Maryam EsmaeiliVakilabadi, Mohammad Solar and Stellar Astrophysics Astrophysics of Galaxies The Gaia DR3 parallax approach was used to estimate the absolute parameters of 2375 Delta Scuti stars from the ASAS catalog. The selected stars have a variety of observational characteristics, with a higher than 80% probability of being Delta Scuti stars. We have displayed all the stars in the Hertzsprung-Russell (H-R) diagram along with the Delta Scuti instability strip, the Zero Age Main Sequence (ZAMS), and the Terminal-Age Main Sequence (TAMS). Then, we determined which fundamental and overtone modes each star belongs to using pulsation constant (Q) calculations. In addition, we evaluated the parameters in the Q calculation equation using three machine learning methods, which showed that surface gravity and temperature have the greatest effect on its calculation. The Period-Luminosity (P-L) relationship of the Delta Scuti stars was also revisited. Eventually, using least squares linear regression, we made four linear fits for fundamental and overtone modes and updated their relationships. |
| title | Period-Luminosity Relationship for $δ$ Scuti Stars Revisited |
| topic | Solar and Stellar Astrophysics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2401.01091 |