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| Paper: |
CA II emission from pre-main sequence stars |
| Volume: |
9, Cool Stars, Stellar Systems, and the Sun: Sixth Cambridge Workshop |
| Page: |
304 |
| Authors: |
Hamann, Fred; Persson, S. E. |
| Abstract: |
High spectral resolution observations of Ca II line emission are reported from a large sample of pre-main sequence stars. The main result involves a characteristic pattern in the strengths and widths of the infrared triplet lines, which are attributed to a small temperature depression across the emitting region. If correct, this implies significant radiative cooling in the triplet lines, and possibly a link between the envolope velocity and temperature structures. |
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