Estimating molecular hydrogen in diffuse interstellar clouds

Details Estimating molecular hydrogen in diffuse interstellar clouds Estimating molecular hydrogen in diffuse interstellar clouds

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.238..559s&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 238, May 15, 1989, p. 559-565.

Astronomy and Astrophysics

Astronomy

10

Hydrogen Atoms, Hydrogen Clouds, Interstellar Matter, Molecular Clouds, Absorption Spectra, Iue, Line Spectra, Ultraviolet Spectra

Scientific paper

Two methods for estimating the column density of molecular hydrogen in diffuse interstellar clouds are compared. The first method combines the atomic hydrogen column density with the E(B-V) diagram, and the second method is based on optical observations of CH molecules. The CH method is shown to be more accurate and, for the case of diffuse clouds, to provide a smaller rms scatter than the atomic H method.

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