Hetgs Spectroscopy of the Long-Period Active Binary, im Pegasi.

Details Hetgs Spectroscopy of the Long-Period Active Binary, im Pegasi. Hetgs Spectroscopy of the Long-Period Active Binary, im Pegasi.

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..746h&link_type=abstract

Chandra Proposal ID #03200079

Physics

Chandra Proposal Id #03200079

Scientific paper

RS CVn binary systems are well known for their activity, interpreted as large-scale versions of Solar phenomena: spots, prominences, coronae, all with dynamic behavior. Stellar X-ray luminosity is well known to correlate with rotation and RS CVn stars are among the most luminous of late-type sources; they are prime candidates for X-ray spectroscopy. IM Peg is a long-period system (25d), and relatively X-ray luminous. We propose to obtain 8 HETGS spectra sampled several times during 2-3 rotations. Each exposure will well expose strong lines and also provide an integrated flux. Summed spectra will be used for deriviation of emission measure and abundances. Both long and short-term variability will be examined and correlated with activity diagnostics.

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