Stellar Rotation of T Tauri Stars in the Orion Star-forming Complex
Date Issued
2021
Author(s)
Serna, Javier
Hernandez, Jesus
Kounkel, Marina
Manzo-Martinez, Ezequiel
Roman-Lopes, Alexandre
Roman-Zuniga, Carlos G.
Gracia Batista, Maria
Pinzon, Giovanni
Calvet, Nuria
Briceno, Cesar
Tapia, Mauricio
Suarez, Genaro
Pena Ramirez, Karla
Stassun, Keivan G.
Covey, Kevin
Vargas-Gonzalez, J.
Fernandez-Trincado, Jose G.
DOI
http://dx.doi.org/10.3847/1538-4357/ac300a
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 (0.4M(circle dot) < M-* < 1.2M(circle dot)). Our results support the existence of a mechanism linking v sin(i) to the presence of accreting protoplanetary disks, responsible for regulating stellar rotation on 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.


