Sign on

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 (41) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (1)
· Reads History
·
· Translate This Page
Title:
Laboratory measurement of the 1(01)-0(00) transition and electric dipole moment of SiC2
Authors:
Suenram, R. D.; Lovas, F. J.; Matsumura, K.
Affiliation:
AA(NIST, Gaithersburg, MD), AB(NIST, Gaithersburg, MD), AC(NIST, Gaithersburg, MD)
Publication:
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 342, July 15, 1989, p. L103-L105. (ApJL Homepage)
Publication Date:
07/1989
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Electric Dipoles, Electron Transitions, Interstellar Matter, Silicon Carbides, Carbon Stars, Fabry-Perot Spectrometers, Fourier Transformation, Laboratories, Microwave Spectrometers, Molecular Spectra, Stellar Evolution
DOI:
10.1086/185495
Bibliographic Code:
1989ApJ...342L.103S

Abstract

A laser-ablation source coupled to a pulsed-nozzle Fabry-Perot Fourier-transform microwave spectrometer is used to investigate the 1(01)-0(00) transition in (Si-28)C2, (Si-29)C2, and (Si-30)C2. The results are presented in tables, and the frequencies are found to be 23.600242(4), 23.257511(8), and 22.937583(8) GHz, respectively. From the electric dipole moment determined for (Si-28)C2, the SiC2 column density toward the evolved carbon star IRC + 10216 is estimated as 2.7 x 10 to the 14th/sq cm. This experimentally based value is shown to be about twice that calculated on the basis of theoretical dipole moments by Thaddeus et al. (1984).

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)

  New!

Find Similar Abstracts:

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