Detection of boron, cobalt, and other weak interstellar lines toward Zeta Ophiuchi

Details Detection of boron, cobalt, and other weak interstellar lines toward Zeta Ophiuchi Detection of boron, cobalt, and other weak interstellar lines toward Zeta Ophiuchi

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...413l..51f&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 413, no. 1, p. L51-L54.

Astronomy and Astrophysics

Astrophysics

67

Abundance, Interstellar Matter, Line Spectra, Ultraviolet Spectra, Boron, Cobalt, Depletion, H Ii Regions, Oscillator Strengths, Phosphorus

Scientific paper

Numerous weak lines from interstellar atomic species toward Zeta Ophiuchi were observed with the Goddard High-Resolution Spectrograph. Of particular note are the first interstellar detection of cobalt and the detection of boron in this sight line. These measurements provide estimates for the amount of depletion for the two elements. Boron, a volatile, and cobalt, a refractory element, display the depletion pattern found by Savage et al. (1992). The abundance of phosphorus in the H II region associated with the star was obtained from a detection of P III. Additional weak lines from S I, C I, Ni II, and Cu II were detected for the first time; these lines provide the basis for refinements in oscillator strength and column density. Analysis of the neutral sulfur data indicates that the atomic gas is more widely distributed than the molecular material in the main component.

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