Physics
Scientific paper
Jun 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spd....37.0111l&link_type=abstract
American Astronomical Society, SPD meeting #37, #1.11; Bulletin of the American Astronomical Society, Vol. 38, p.217
Physics
Scientific paper
The standard solar model and helioseismology measurements were in goodagreement until recently when new, three-dimensional hydrodynamiccalculations apparently reduced the metal content in the solarphotosphere by a factor of 2. To once again reconcile theory andobservation, it has been suggested that the solar Ne/O abundance ratiocould be increased to 0.52 from the accepted value of 0.15. Since neonis not observed in the solar photosphere, this suggestion could not betested directly. However, a recent study of 21 stars observed by theChandra X-ray telescope supported this correction with a value of 0.41for stellar Ne/O abundance. We have analyzed old data from the FCS (FlatCrystal Spectrometer on board NASA's Solar Maximum Mission) archive tosee if the results supported this new enhanced neon hypothesis. We alsoexamined full-Sun X-ray spectra from the 1960's which show the Sun as astar. Both of our analyses show that Ne/O abundance ratio is consistentwith the currently accepted value of 0.15. We conclude that the enhancedneon hypothesis cannot be used to reconcile theory and observation.Solar physics research at the University of Memphis is supported bygrants from NSF and NASA.
Garst Jennifer W.
Lippner Lindsey
Nasraoui Kaouther
Roames J. K.
Schmelz Joan T.
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