Computer Science – Sound
Scientific paper
Jan 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...349..141c&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 349, Jan. 20, 1990, p. 141-149.
Computer Science
Sound
26
Atmospheric Models, Chromosphere, Giant Stars, Late Stars, Sound Waves, Stellar Structure, Electron Density (Concentration), Emission Spectra, Shock Fronts, Stellar Atmospheres
Scientific paper
Theoretical models for chromospheric structures of late-type giant stars are computed, including the time-dependent propagation of acoustic waves. Models with short-period monochromatic shock waves as well as a spectrum of acoustic waves are discussed, and the method is applied to the stars Arcturus, Aldebaran, and Betelgeuse. Chromospheric extent, defined as the monotonic decrease with height of the time-averaged electron densities, are found to be 1.12, 1.13, and 1.22 stellar radii for the three stars, respectively; this corresponds to a time-averaged electron density of 10 to the 7th/cu cm. Predictions of the extended chromospheric obtained using a simple scaling law agree well with those obtained by the time-dependent wave models; thus, the chromospheres of all stars for which the scaling law is valid consist of the same number of pressure scale heights.
No associations
LandOfFree
Chromospheric extents predicted by time-dependent acoustic wave models 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 Chromospheric extents predicted by time-dependent acoustic wave models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chromospheric extents predicted by time-dependent acoustic wave models will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1560723