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

• Published in: arXiv.org 2021-10
• Main Authors: Serna, Javier, Hernández, Jesús, Kounkel, Marina, Manzo-Martínez, Ezequiel, Roman-Lopes, Alexandre, Román-Zuñiga, Carlos G, Maria Gracia Batista, Pinzón, Giovanni, Calvet, Nuria, Briceño, Cesar, Tapia, Mauricio, Suárez, Genaro, Karla Peña Ramirez, Stassun, Keivan G, Covey, Kevin, Vargas-González, Jaime, José Gregorio Fernández-Trincado
• Format: Article
• Language: English
• Subjects: Accretion disks; Constraint modelling; Hertzsprung-Russell diagram; Low mass stars; Planet formation; Protoplanetary disks; Space telescopes; Star formation; Stellar age; Stellar evolution; Stellar rotation; T Tauri stars
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.2110.06431

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.