Effects of temperature and velocity gradients on Doppler widths

Details Effects of temperature and velocity gradients on Doppler widths Effects of temperature and velocity gradients on Doppler widths

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.126..295p&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 126, no. 2, Oct. 1986, p. 295-300.

Astronomy and Astrophysics

Astrophysics

Doppler Effect, Interplanetary Medium, Line Spectra, Radiative Transfer, Temperature Effects, Velocity Distribution, Absorption Spectra, Cosmic Gases, Emission Spectra, Gas Dynamics, Radiation Sources

Scientific paper

The effects of gradients of temperature and expansion velocities on Doppler widths is investigated, and the emergent profiles of lines in different spherically symmetric media are calculated. The variations of the source function as well as the velocity changes along the radius are specified, and the calculated profiles show an interesting feature of broadening. It is noted that the density of the radiation field does not change the profile characteristics when T(r) is aobut r exp -2 and r exp -3.

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