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American Astronomical Society, Astrophysical Journal, 2(923), p. 177, 2021

DOI: 10.3847/1538-4357/ac300a

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Stellar Rotation of T Tauri Stars in the Orion Star-forming Complex

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

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 < M * < 1.2M ). 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.