Observations of Magnetic Fields on T Tauri Stars

Details Observations of Magnetic Fields on T Tauri Stars Observations of Magnetic Fields on T Tauri Stars

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ap%26ss.292..619v&link_type=abstract

Astrophysics and Space Science, v. 292, Issue 1, p. 619-629 (2004).

Astronomy and Astrophysics

Astrophysics

64

T Tauri Stars, Magnetospheric Accretion, Infrared Spectroscopy, Zeeman Broadening, Circular Spectropolarimetry

Scientific paper

We present measurements of magnetic field strength and geometry on the surfaces of T Tauri stars (TTS) with and without circumstellar disks. We use these measurements to argue that magnetospheric accretion models should not assume that a fixed fraction of the stellar surface contains magnetic field lines that couple with the disk. We predict the fractional area of accretion footpoints, using magnetospheric accretion models and assuming field strength is roughly constant for all TTS.

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