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Determining the atmospheric structure and dynamics of the FK Comae Star HD32918The results of UV observations taken with the International Ultraviolet Explorer (IUE) satellite and microwave observations obtained with the Australia Telescope during an observing campaign of the rapidly rotating K0 dwarf star HD 197890, nicknamed 'Speedy Mic' are presented. This star was recently recognized as a powerful, transient EUV source by the ROSAT WFC, and subsequent investigation showed it to be a ZAMS or possibly a PMS dwarf which may be a member of the Local Association. Our observations show it to have strong, variable UV emission lines near the 'saturation' levels. The radio observations show a level of 'quiescent' emission consistent with other rapidly rotating stars, but there is no evidence for the large flux variations that normally characterize the time history of such objects.
Document ID
19960012492
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Robinson, R. D. (Computer Sciences Corp. Calverton, MD, United States)
Date Acquired
September 6, 2013
Publication Date
April 1, 1995
Subject Category
Astronomy
Report/Patent Number
NASA-CR-199877
NIPS-96-08393
NAS 1.26:199877
Accession Number
96N18729
Funding Number(s)
CONTRACT_GRANT: NASA ORDER S-97225-E
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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