Further Resolving the Puzzle of Hybrid Star X-rays

Details Further Resolving the Puzzle of Hybrid Star X-rays Further Resolving the Puzzle of Hybrid Star X-rays

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005cxo..prop.1897a&link_type=abstract

Chandra Proposal ID #07200818

Computer Science

Chandra Proposal Id #07200818

Scientific paper

Do Alpha TrA (K2II) and Beta Ind (K1II) have previously unrecognized X-ray active dwarf companions, leading us astray concerning the coronal properties of the "hybrid-chromosphere" class? Establishing the true X-ray luminosities of the hybrids is a basis for understanding magnetic field generation in evolved supergiants, the driving of their winds, and the seeding of coronal conditions in their extended outer envelopes. It also bears on the issue of late-type dwarfs orbiting main sequence B stars, the evolutionary predecessors of K bright giants. We propose to directly image the putative hybrid companions using Chandra, with supporting observations from HST/WFPC2. We also propose to obtain a coronal temperature for the archetype hybrid Alpha Aqr (G2Ib), recently detected by HRC-I.

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