Emission Measure Distributions in Active Binary Systems

Details Emission Measure Distributions in Active Binary Systems Emission Measure Distributions in Active Binary Systems

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003csss...12...60s&link_type=abstract

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

Astronomy and Astrophysics

Astrophysics

Scientific paper

Generally, the study of coronal structure in other cool stars different from the Sun is limited to 2-T or 3-T emission measure fits, and only a few cases are described with a continuous distribution of values in temperature. In this work it is presented the study of 19 active binary systems and 5 single stars, the widest sample of stars to date for which the emission measure distribution is described as a continuous distribution. The analysis covers the range log T(K)=4.0-7.4, making use of EUVE iron lines and IUE data to describe the behavior in the corona and transition region. Conclusions are derived from the quiescent and flaring stages in 5 active binary systems, and the whole sample includes a variety of spectral types in giant and dwarf stars. The calculated distributions do not match, totally or partially, those predicted by current models.

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