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Is the magnetospheric accretion active in the Herbig Ae/Be stars?

Published online by Cambridge University Press:  16 August 2023

Giovanni Pinzón Open the ORCID record for Giovanni Pinzón [Opens in a new window] ,
Jesús Hernández  and
Javier Serna
Giovanni Pinzón
Affiliation:
Observatorio Astronómico Nacional, Universidad Nacional de Colombia, Bogotá, Colombia
Jesús Hernández
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, Ensenada, B.C, México
Javier Serna
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, Ensenada, B.C, México
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Abstract

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This contribution is based on the work published by (Pinzón et al. 2021) in which we computed rotation rates for a sample of 79 young stars (∼3 Myr) in a wide range of stellar masses (from T Tauri Stars to Herbig Ae/Be stars) in in the Orion Star Formation Complex (OSFC). We study whether the magnetospheric accretion scenario (MA), valid for young low mass stars, may be applied over a wide range of stellar masses of not. Under the assumption that stellar winds powered by stellar accretion are the main source for the stellar spin down, the hypothesis of an extension of MA toward higher masses seems plausible. A comparison with Ap/Bp stars suggest that HAeBes should suffer a loss of angular momentum by a factor between 12 and 80 during the first 10 Myr in order to match the magnetic Ap/Bp zone in HR diagram.

Keywords

starsformationrotation
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 17 , Symposium S370: Winds of Stars and Exoplanets , August 2021 , pp. 84 - 88
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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