The Structure and Energy Balance of the Chromosphere, Transition Region and Corona of ɛ Eri (K2 V)

Details The Structure and Energy Balance of the Chromosphere, Transition Region and Corona of ɛ Eri (K2 V) The Structure and Energy Balance of the Chromosphere, Transition Region and Corona of ɛ Eri (K2 V)

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003csss...12..840j&link_type=abstract

The Future of Cool-Star Astrophysics: 12th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (2001 July 30 - August

Astronomy and Astrophysics

Astrophysics

Ɛ Eri

Scientific paper

Observations of ɛ Eri have been made with the Space Telescope Imaging Spectrograph (STIS) on the Hubble Space Telescope (HST). The magnetic dipole lines of ion{Fe}{12} at 1242.20 and 1349.38 Å have been observed. Using lines of ion{Si}{3} and ion{O}{4}, the mean electron pressure is 4.8 × 1015 cm-3 K. We discuss how comparisons between theoretical and observed emission measure distributions can be used to investigate the inhomogeneity of the corona and lower transition region. The observed line widths can be used to investigate the non-thermal heating. Evidence of two components to some line profiles is found.

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