Physics – Atomic Physics
Scientific paper
Aug 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...484..820z&link_type=abstract
The Astrophysical Journal, vol. 484, p. 820
Physics
Atomic Physics
19
Atomic Physics, Spectrographs, High Resolution, Line Of Sight, Hubble Space Telescope, Interstellar Space, Ph, Extraction
Scientific paper
High quality spectra of interstellar absorption from C I toward beta1 Sco, rho Oph A, and chi Oph were obtained with the Goddard High Resolution Spectrograph on HST. Many weak lines were detected within the observed wavelength intervals: 1150-1200 A for beta1 Sco and 1250-1290 A for rho Oph A and chi Oph. Curve-of-growth analyses were performed in order to extract accurate column densities and Doppler parameters from lines with precise laboratory-based f-values. These column densities and b-values were used to obtain a self-consistent set of f-values for all the observed C I lines. A particularly important constraint was the need to reproduce data for more than one line of sight. For about 50% of the lines, the derived f-values differ appreciably from the values quoted by Morton.
Cardelli Jason A.
Federman Steven Robert
Zsargo Janos
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