NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Chemical Compositions and Anomalies in Stellar CoronaeIn summary, as the papers cited here and in earlier reports demonstrate, this award has enabled us to obtain a fairly good picture of the abundance anomalies in stellar coronae. The "inverse FIP" effect in very active stars has now been fleshed out as a more complex anomaly depending on FIP, whereas before it appeared only in terms of a general metal paucity, the recent solar abundance assessment of Asplund et a1 will, if correct, challenge some of the older interpretations of coronal abundance anomalies since they imply quite different relative abundances of CNO compared with Fe, Mg and Si. Further investigations have been in into the possibility of modeling some of the recent coronal abundance anomaly results in terms of Alfven wave-driven separation of neutrals and ions in the upper chromosphere. This work still remains in the seed stage, and future funding from a different program will be requested to pursue it further.
Document ID
20050186743
Acquisition Source
Headquarters
Document Type
Contractor or Grantee Report
Authors
Drake, Jeremy
(Smithsonian Astrophysical Observatory Cambridge, MA, United States)
Oliversen, Ronald J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 23, 2013
Publication Date
June 1, 2005
Subject Category
Astrophysics
Funding Number(s)
CONTRACT_GRANT: NAG5-9105
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Document Inquiry

Available Downloads

There are no available downloads for this record.
No Preview Available