A synthetic spectrum study of the sun and Arcturus

Details A synthetic spectrum study of the sun and Arcturus A synthetic spectrum study of the sun and Arcturus

Nov 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978phdt........10b&link_type=abstract

Ph.D. Thesis Pennsylvania State Univ., University Park.

Computer Science

1

Solar Spectra, Spectrum Analysis, Stellar Spectra, Atomic Spectra, Heavy Elements, Ionic Waves, Line Spectra, Turbulence

Scientific paper

Seventy-eight weak and moderate strength lines arising from 13 atoms and ions are included in the synthetic spectrum study. In addition, line profile calculations were performed for 58 weakly blended iron and titanium lines. The microturbulent velocity is found to increase rapidly with depth over the line forming layer. The adopted value for the macroturbulent velocity is .9 km/sec. Synthetic spectra were computed for the same intervals in Arcturus' spectrum. The microturbulent and macroturbulent velocities and the heavy element abundance were determined. The microturbulent velocity can be satisfactorily represented by a constant value of 2.4 km/sec throughout the line forming region. The macroturbulent velocity is found to be 3 km/sec. The abundance results are based on the study of the 61 lines for which complete line data are available. The heavy elements are found to be underabundant as compared to the sun.

Affiliated with

Also associated with

No associations

Rating

A synthetic spectrum study of the sun and Arcturus does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A synthetic spectrum study of the sun and Arcturus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A synthetic spectrum study of the sun and Arcturus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1068111