a High-Resolution Study of the Active Binary System V824 ARA

Details a High-Resolution Study of the Active Binary System V824 ARA a High-Resolution Study of the Active Binary System V824 ARA

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..750d&link_type=abstract

Chandra Proposal ID #03200161

Computer Science

Chandra Proposal Id #03200161

Scientific paper

We propose to observe the active G5+K0 dwarf binary system V824 Ara (HD 155555), a very young (zero-age main-sequence or pre-main sequence) system with a 1.68 day orbital period, using the Chandra ACIS-S/HETG instrument. V824 Ara is a synchronized binary similar in age to the prototype young single K dwarf AB Dor. We will study the X-ray spectrum, both integrated over the whole exposure and as a function of orbital/rotational phase and overall emission level. We will use these spectra to infer the coronal temperature structure or DEM, and elemental abundances. We will compare these coronal properties to those of evolved active binaries (e.g., AR Lac), and also to those of AB Dor and similar young stars, to see if there are discernible differences due to binarity and evolutionary stage.

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