Constraining Stellar Rotation at the Zero-age Main Sequence with TESS
Article
Douglas, S. T,, Cargile, P. A., Matt, S. P., Breimann, A. A., Pérez Chávez, J. A., Huang, C. X., Wright, N. J. and Zhou, G.. 2024. "Constraining Stellar Rotation at the Zero-age Main Sequence with TESS." The Astrophysical Journal: an international review of astronomy and astronomical physics. 962 (1). https://doi.org/10.3847/1538-4357/ad0fe3
Article Title | Constraining Stellar Rotation at the Zero-age Main Sequence with TESS |
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ERA Journal ID | 1057 |
Article Category | Article |
Authors | Douglas, S. T,, Cargile, P. A., Matt, S. P., Breimann, A. A., Pérez Chávez, J. A., Huang, C. X., Wright, N. J. and Zhou, G. |
Journal Title | The Astrophysical Journal: an international review of astronomy and astronomical physics |
Journal Citation | 962 (1) |
Article Number | 16 |
Number of Pages | 18 |
Year | 2024 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-637X |
1538-4357 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-4357/ad0fe3 |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-4357/ad0fe3 |
Abstract | The zero-age main sequence (ZAMS) is a critical phase for stellar angular momentum evolution, as stars transition from contraction-dominated spin-up to magnetic wind-dominated spin-down. We present the first robust observational constraints on rotation for FGK stars at ≈40 Myr. We have analyzed TESS light curves for 1410 members of five young open clusters with ages between 25 and 55 Myr: IC 2391, IC 2602, NGC 2451A, NGC 2547, and Collinder 135. In total, we measure 868 rotation periods, including 96 new, high-quality periods for stars around 1 M⊙. This is an increase of ten times the existing literature sample at the ZAMS. We then use the τ2 method to compare our data to models for stellar angular momentum evolution. Although the ages derived from these rotation models do not match isochronal ages, we show that these observations can clearly discriminate between different models for stellar wind torques. Finally, τ2 fits indicate that magnetic braking and/or internal angular momentum transport significantly impact rotational evolution even on the pre-main sequence. |
Keywords | Open star clusters; Late-type stars ; Stellar evolution; Stellar rotation |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 5101. Astronomical sciences |
Byline Affiliations | Lafayette College, United States |
Center for Astrophysics Harvard and Smithsonian, United States | |
University of Oklahoma, United States | |
University of Exeter, United Kingdom | |
Howard University, United States | |
University of Southern Queensland | |
Keele University, United Kingdom |
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https://research.usq.edu.au/item/z5qx5/constraining-stellar-rotation-at-the-zero-age-main-sequence-with-tess
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