Models of the Omicron Per diffuse interstellar cloud

Details Models of the Omicron Per diffuse interstellar cloud Models of the Omicron Per diffuse interstellar cloud

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.262..795h&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 262, no. 3, p. 795-799.

Astronomy and Astrophysics

Astronomy

10

Astronomical Models, Interstellar Matter, Molecular Clouds, Abundance, Background Radiation, Charge Transfer

Scientific paper

We develop a model of the diffuse interstellar cloud along the line of sight to Omicron Per. The model comprises a region of gas in equilibrium, under the action of the background radiation field, a C-type shock and postshock gas. With the exception of CH, the observed column densities of a range of atomic and molecular species, including CH(+) and H2 (J = 4), can be successfully reproduced. The elemental abundances of C, N and O need to be depleted by a factor of approximately 0.4. The influence of the charge transfer reaction O(H(+), O(+))H on the ortho:para-H2 ratio is discussed.

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