Post-T Tauri stars: a false problem

Details Post-T Tauri stars: a false problem Post-T Tauri stars: a false problem

1996-12-13

arxiv.org/abs/astro-ph/9612139v1

Astronomy and Astrophysics

Astrophysics

6 pages (LaTeX), no Figures to be published in The Astrophysical Journal Letters

Scientific paper

10.1086/310496

We consider the problem of the apparent lack of old T Tauri stars in low-mass star forming regions in the framework of the standard model of low-mass star formation. We argue that the similarity between molecular cloud lifetime and ambipolar diffusion timescale implies that star formation does not take place instantaneously, nor at a constant rate. We conclude that the probability of finding a large population of old stars in a star forming region is intrinsically very small and that the post-T Tauri problem is by and large not existent.

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