When the Dynamo SPUTTERS:THE Corona of a AN Extremely Inactive (maunder MINIMUM?) Star

Details When the Dynamo SPUTTERS:THE Corona of a AN Extremely Inactive (maunder MINIMUM?) Star When the Dynamo SPUTTERS:THE Corona of a AN Extremely Inactive (maunder MINIMUM?) Star

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cxo..prop..558s&link_type=abstract

Chandra Proposal ID #02200558

Physics

Chandra Proposal Id #02200558

Scientific paper

The Wilson survey identified a group of stars with very low level, near-constant Ca II emission. Weak UV and Xray emission in a few of these stars implies that magnetic heating from a residual (probably turbulent) dynamo still operates. Many of these stars are likely in the stellar analog of the Maunder minimum - a period when the normal cyclic dynamo of the sun was in quiescence. We propose to study the brightest of these stars with Chandra. The stars present a unique opportunity to 1) study the properties of the weakest dwarf star coronae, 2) to investigate the coronal product of a predominantly turbulent dynamo in a high mass star, exploring its dependence on rotation and mass, and 3) to potentially study (indirectly) the properties of the solar corona during magnetic minima.

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