A Physical Limit to the Magnetic Fields of T Tauri Stars
نویسنده
چکیده
Recent estimates of magnetic field strengths in T Tauri stars yield values B = 1–4 kG. In this paper, I present an upper limit to the photospheric values of B by computing the equipartition values for different surface gravities and effective temperatures. The values of B derived from the observations exceed this limit, and I examine the possible causes for this discrepancy. Subject headings: stars: atmospheres—stars: late-type—stars: magnetic fields—stars: pre-main sequence To appear in The Astrophysical Journal Letters
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تاریخ انتشار 1998