Heavy Ion Transport: Multi-Temperature Abundance Studies of the Active RS CVN Lambda and

Details Heavy Ion Transport: Multi-Temperature Abundance Studies of the Active RS CVN Lambda and Heavy Ion Transport: Multi-Temperature Abundance Studies of the Active RS CVN Lambda and

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..762b&link_type=abstract

Chandra Proposal ID #03200561

Physics

Chandra Proposal Id #03200561

Scientific paper

We propose a 100 ks observation with Chandra LETG to conduct a comprehensive study of the coronal abundances of the active binary Lambda And. Chandra HETG observations of Lambda And indicate that the Ne/Fe abundance at high temperature (10 million K) is about four times larger than the abundance at lower coronal temperature (1 million) K. LETG offers unique coverage of intermediate ionization states of many elements, as well as high resolution to isolate weaker lines from ions previously unresolved by EUVE. Determining the abundance patterns under different physical conditions in the same system will constrain models of acceleration, heating, diffusion, and gravitational settling. We will measure abundances for C, N, O, Ne, Mg, Si, S, and Fe across a broad temperature range.

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