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2021ApJ...923..177S - Astrophys. J., 923, 177-177 (2021/December-3)

Stellar rotation of T Tauri stars in the Orion Star-forming Complex.

SERNA J., HERNANDEZ J., KOUNKEL M., MANZO-MARTINEZ E., ROMAN-LOPES A., ROMAN-ZUNIGA C.G., BATISTA M.G., PINZON G., CALVET N., BRICENO C., TAPIA M., SUAREZ G., PENA RAMIREZ K., STASSUN K.G., COVEY K., VARGAS-GONZALEZ J. and FERNANDEZ-TRINCADO J.G.

Abstract (from CDS):

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 (vsin(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 vsin(i) decreasing with age for low-mass stars (0.4M < M* < 1.2M). Our results support the existence of a mechanism linking vsin(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.

Abstract Copyright: © 2021. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Young stellar objects - Stellar rotation - Stellar evolution

VizieR on-line data: <Available at CDS (J/ApJ/923/177): table1.dat table3.dat table4.dat>

Simbad objects: 9744

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