Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pasp...98..857w&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 98, Sept. 1986, p. 857-861.
Astronomy and Astrophysics
Astronomy
7
Abundance, Carbon, Interstellar Matter, Iue, Ophiuchi Clouds, Stellar Spectra, Ultraviolet Spectra, High Dispersion Spectrographs, Ultraviolet Astronomy, Ultraviolet Detectors
Scientific paper
The authors describe a procedure designed to obtain increased sensitivity from high-dispersion IUE spectra by using a flat-field spectrum to remove nonrandom noise due to the response pattern of the SEC vidicon detector. Application of this procedure to spectra of ρ Oph and β1Sco near the spin-forbidden interstellar λ2325 line of C II yields 2 σ upper limits on absorption of Wλ ⪉ 4 mÅ. The resulting depletion of carbon from the interstellar gas toward ρ Oph exceeds a factor of 1.4.
Hobbs Lew M.
Welty Daniel E.
York Don G.
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