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

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

1997-09-16

arxiv.org/abs/astro-ph/9709158v1

Astronomy and Astrophysics

Astrophysics

2 figures

Scientific paper

10.1086/305212

Current magnetic-accretion models for classical T-Tauri stars rely on a strong, dipolar magnetic field of stellar origin to funnel the disk material onto the star, and assume a steady-state. In this paper, I critically examine the physical basis of these models in light of the observational evidence and our knowledge of magnetic fields in low-mass stars, and find it lacking. I also argue that magnetic accretion onto these stars is inherently a time-dependent problem, and that a steady-state is not warranted. Finally, directions for future work towards fully-consistent models are pointed out.

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