Sign on
ADS Classic is now deprecated. It will be completely retired in October 2019. This page will automatically redirect to the new ADS interface at that point.

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (42) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
· Translate This Page
Detection of the N = 3-2 transition of CCH in Orion and determination of the molecular rotational constants
Ziurys, L. M.; Saykally, R. J.; Plambeck, R. L.; Erickson, N. R.
AA(California, University, Berkeley, CA), AB(California, University, Berkeley, CA), AC(California, University, Berkeley, CA), AD(Massachusetts, University, Amherst, MA)
Astrophysical Journal, Part 1, vol. 254, Mar. 1, 1982, p. 94-99. Research supported by the Dreyfus Foundation (ApJ Homepage)
Publication Date:
NASA/STI Keywords:
Astronomical Spectroscopy, Hyperfine Structure, Interstellar Matter, Molecular Clouds, Molecular Rotation, Transition Probabilities, Line Spectra, Radicals, Spectroscopic Analysis, Spectrum Analysis
Bibliographic Code:


We report the detection of five hyperfine components of the N = 3-2 transition of CCH in Orion A. From an analysis of this data combined with N = 1-0 data from previous observations, the rotational constants (B0 and D0) were determined, and the values of the fine structure (gamma) and hyperfine constants (b, c) were improved. We predict the frequencies of additional rotational transitions of CCH up to N = 5-4. A rotational temperature and column density are estimated on the basis of the 3-2 data.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences

More Article Retrieval Options

HELP for Article Retrieval

Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

Find Similar Abstracts:

Use: Authors
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
arXiv e-prints