Carbon monoxide broad wings and self-reversals in NGC 2071

Details Carbon monoxide broad wings and self-reversals in NGC 2071 Carbon monoxide broad wings and self-reversals in NGC 2071

Feb 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...253..593l&link_type=abstract

Astrophysical Journal, Part 1, vol. 253, Feb. 15, 1982, p. 593-600.

Astronomy and Astrophysics

Astrophysics

40

Astronomical Spectroscopy, Carbon Monoxide, Molecular Clouds, Nebulae, Spectral Line Width, Absorption Spectra, Gas Flow, Interstellar Masers, Interstellar Matter, Radiative Heat Transfer, Reflection, Spectrum Analysis, Stellar Winds

Scientific paper

The paper analyzes CO spectra of NGC 2071 which exhibit broad wings and prominent self-reversed line profiles. The wings provide evidence for high-velocity bipolar gas flow powered by a strong stellar wind along the axis of a slowly rotating disklike structure. Model calculations indicate that there is systematic radial mass motion in the main body of the cloud and that the hydrogen density is 1000-10,000 per cu cm. The self-reversals arise in part from transfer effects in collapsing or expanding material. A significant amount of self-absorption also originates in cooler foreground gas at the cloud periphery

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