General calculations of rotational effects on spectral lines

Details General calculations of rotational effects on spectral lines General calculations of rotational effects on spectral lines

Sep 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...232..624c&link_type=abstract

Astrophysical Journal, Part 1, vol. 232, Sept. 1, 1979, p. 624-635. Research supported by the Research Corp. and University of

Astronomy and Astrophysics

Astronomy

9

Galactic Radiation, Galactic Rotation, Interstellar Gas, Line Shape, Nebulae, Angular Momentum, Cosmic Dust, Radio Sources (Astronomy), Spectral Line Width

Scientific paper

The paper presents a family of spectral-line profiles (flux profiles) in velocity space for rotating objects with spherical and oblate symmetry. Calculations are given which include the range of theoretically expected density laws as currently reported in the literature, and the range of rotational-velocity laws which extend from rigid body rotation to conservation of angular momentum. In addition, calculations are presented for objects which are uniformly sampled, as well as for Gaussian sampling which may occur with a radio telescope beam power pattern. The latter Gaussian convolved results include effects of offsets in the equatorial plane. Finally, results are compared to observational examples from the literature.

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