A Critique of Current Magnetic‐Accretion Models for Classical T Tauri Stars | Zendy

Pedro N. Safier | Zendy

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A Critique of Current Magnetic‐Accretion Models for Classical T Tauri Stars

Author(s) -

Pedro N. Safier

Publication year - 1998

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/305212

Subject(s) - t tauri star , physics , astrophysics , stars , accretion (finance) , magnetic field , funnel , astronomy , accretion disc , chemistry , organic chemistry , quantum mechanics

Current magnetic-accretion models for classical T-Tauri stars rely on astrong, dipolar magnetic field of stellar origin to funnel the disk materialonto the star, and assume a steady-state. In this paper, I critically examinethe physical basis of these models in light of the observational evidence andour knowledge of magnetic fields in low-mass stars, and find it lacking. I also argue that magnetic accretion onto these stars is inherently atime-dependent problem, and that a steady-state is not warranted. Finally, directions for future work towards fully-consistent models arepointed out.Comment: 2 figure

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