Buried Alive in the Coronal GRAVEYARD?!

Details Buried Alive in the Coronal GRAVEYARD?! Buried Alive in the Coronal GRAVEYARD?!

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..759a&link_type=abstract

Chandra Proposal ID #03200497

Astronomy and Astrophysics

Astrophysics

Chandra Proposal Id #03200497

Scientific paper

We propose 20 ks pointings with Chandra HRC-I to obtain detections of 3 red giants in the depths of the "coronal graveyard." Stellar coronal activity is important to the Sun-Earth connection, to the fate of primitive planetary atmospheres, and to a broad reaching set of magnetic phenomena in many cosmic environments. Understanding the activity, and its evolution, therefore is a key objective in astrophysics. The birth of magnetic activity in young stars is well-studied; the death of coronae in highly evolved stars is not. Our program ultimately will test the hypothesis that significant coronal activity persists on the red giants, but smothered beneath a "cool absorber" in the chromospheric envelope. Such activity might be the long-sought initiator of red giant winds.

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