Probing spectral changes in variable active M dwarfs

Details Probing spectral changes in variable active M dwarfs Probing spectral changes in variable active M dwarfs

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005cxo..prop.1881n&link_type=abstract

Chandra Proposal ID #07200093

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Chandra Proposal Id #07200093

Scientific paper

With an HETGS observation of the active M dwarf binary EQ Peg we can obtain separate spectra of the two components in one shot. We aim to extract two or more spectra from a 100ks observation by selecting time segments with different emission levels, in order to look for spectral signatures of variability in the plasma density, temperature, and opacity. To this aim, we will employ a simple but effective approach, namely a direct comparison of emission lines, that we have recently applied with success to observations of other active stars. This observation will allow us to address the issue of the dynamical nature of the plasma heating in the coronae of nearly fully-convective low-mass stars.

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