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Title:
The detection of interstellar fluorine in the line of sight toward Delta Scorpii
Authors:
Snow, T. P., Jr.; York, D. G.
Affiliation:
AA(Princeton University, New Observatory, Princeton, NJ), AB(Princeton University, New Observatory, Princeton, NJ)
Publication:
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 247, July 1, 1981, p. L39-L41. (ApJL Homepage)
Publication Date:
07/1981
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
ASTRONOMICAL SPECTROSCOPY, FLUORINE, INTERSTELLAR GAS, ABUNDANCE, GAS DENSITY, LINE SPECTRA, SPECTRAL LINE WIDTH
Comment:
A&AA ID. AAA029.131.257
DOI:
10.1086/183585
Bibliographic Code:
1981ApJ...247L..39S

Abstract

The resonance line of F I at 954.825 A is detected in the interstellar spectra of Delta Sco, and possibly Delta Ori, and upper limits are obtained toward five other stars. It is noted that the equivalent width for Delta Sco of 10.9(+4.5, -3.1) in milliangstroms corresponds to a column density of 1.52(+0.60, -0.43) x 10 to the 13th/sq cm and a depletion of -0.53(+0.15, -0.14) dex. For the other lines of sight, depletions of at least 0.1-0.5 dex are inferred. The results are discussed in the context of current theories of the depletion process.

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