Time-dependent effects of acoustic wave heating and molecular cooling in the outer atmosphere of Arcturus

Details Time-dependent effects of acoustic wave heating and molecular cooling in the outer atmosphere of Arcturus Time-dependent effects of acoustic wave heating and molecular cooling in the outer atmosphere of Arcturus

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...209..305c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 209, no. 1-2, Jan. 1989, p. 305-314.

Astronomy and Astrophysics

Astrophysics

16

Abundance, Atmospheric Heating, Chromosphere, Late Stars, Wave Propagation, Carbon Monoxide, Cooling, Euler Equations Of Motion, Radiative Transfer, Shock Waves, Silicon Dioxide

Scientific paper

The propagatiion of acoustic waves is studied in the outer atmosphere of Arcturus where radiation damping by CO and SiO molecules occurs. The dynamical effects generated by periodic and nonperiodic wave models are studied. If the shock strength is larger than 2.35, a hot chromospheric feature with a temperature similar to the semiempirical model of Ayres and Linsky (1975) is generated. The development of this feature leads to a time and height dependent separation between molecule dominated atmospheric layers and chromospheric structures.

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