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arXiv · 2110.06431

Stellar Rotation of T Tauri stars in the Orion Star-Forming Complex

Javier Serna·Jesús Hernández·Marina Kounkel·Ezequiel Manzo-Martínez·Alexandre Roman-Lopes·Carlos G. Román-Zuñiga·Maria Gracia Batista·Giovanni Pinzón·Nuria Calvet·Cesar Briceño·Mauricio Tapia·Genaro Suárez·Karla Peña Ramirez·Keivan G. Stassun·Kevin Covey·Jaime Vargas-González·José Gregorio Fernández-Trincado
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Abstract

We present a large-scale study of stellar rotation for T Tauri stars in the Orion Star-Forming Complex. We use the projected rotational velocity ($v\sin(i)$) estimations reported by the APOGEE-2 collaboration as well as individual masses and ages derived from the position of the stars in the HR diagram, considering Gaia-EDR3 parallaxes and photometry plus diverse evolutionary models. We find an empirical trend for $v\sin(i)$ decreasing with age for low-mass stars ($0.4 M_{\odot} < M_{\ast} < 1.2 M_{\odot}$). Our results support the existence of a mechanism linking $v\sin(i)$ to the presence of accreting protoplanetary disks, responsible for regulating stellar rotation in timescales of about 6 Myr, which is the timescale in which most of the T Tauri stars lose their inner disk. Our results provide important constraints to models of rotation in the early phases of evolution of young stars and their disks.

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Javier Serna, Jesús Hernández, Marina Kounkel, Ezequiel Manzo-Martínez, Alexandre Roman-Lopes, Carlos G. Román-Zuñiga, Maria Gracia Batista, Giovanni Pinzón, Nuria Calvet, Cesar Briceño, Mauricio Tapia, Genaro Suárez, Karla Peña Ramirez, Keivan G. Stassun, Kevin Covey, Jaime Vargas-González, José Gregorio Fernández-Trincado. 2021-10-13. Stellar Rotation of T Tauri stars in the Orion Star-Forming Complex. https://doi.org/10.3847/1538-4357%2Fac300a

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