On absorption by hot interstellar gas. II - The 5303-A forbidden line of Fe XIV

Details On absorption by hot interstellar gas. II - The 5303-A forbidden line of Fe XIV On absorption by hot interstellar gas. II - The 5303-A forbidden line of Fe XIV

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...281..639h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 281, June 15, 1984, p. 639-643.

Astronomy and Astrophysics

Astrophysics

5

Absorption Spectra, Forbidden Transitions, Interstellar Gas, Stellar Spectra, High Temperature Gases, Iron, Spectral Line Width

Scientific paper

Spectroscopic observations of 29 stars at 5303 A obtained with the coude spectrograph on the 2.7-m reflector at McDonald Observatory during 1979-1983 are reported. Instrumental FWHM resolution is 27, 54, or 10 pm, and detection limits near 100 fm equivalent width are obtained in optimal cases. The results are presented in tables and a diagram. No absorption attributable to Fe XIV in hot interstellar gas is detected except for HD 93521, on Apr. 10, 1981, only. This absorption can be located either in interstellar gas at 1.2 million K or less with an Fe XIV/Fe X ratio greater than 3 or in hot gas confined in an inhomogeneous stellar corona.

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