New Laboratory Measurements of Rhomboidal SiC_3

Details New Laboratory Measurements of Rhomboidal SiC_3 New Laboratory Measurements of Rhomboidal SiC_3

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009mss..conferg07g&link_type=abstract

"International Symposium On Molecular Spectroscopy, 64th Meeting, Held 22-26 June, 2009 at Ohio State University. http://molspec

Astronomy and Astrophysics

Astrophysics

Astronomical Species And Processes

Scientific paper

Rhomboidal SiC_3, the highly polar planar ring with C_{2v} symmetry and a transannular C-C bond, was detected in our laboratory about 10 years ago, and soon afterwards was identified with a radio telescope in the expanding envelope of IRC+10216. Recently a sensitive spectral line survey of IRC+10216 was made with the Submillimeter Array (SMA) in the 300 - 355 GHz range with a 3^'' × 2^'' synthesized beam. Many new lines were detected in this survey. Most are from high rotational transitions of molecules that are known in IRC+10216, but some of the lines are quite narrow and more than 10 of these are unassigned. In support of the SMA observations we have extended the earlier laboratory measurements by Apponi et al. from 286 GHz and K_a ≤ 6, to 450 GHz and K_a ≤ 20 from rotational levels as high as 825 K above ground. As a result uncertainties in the predicted spectrum for lines with high K_a have been reduced by as much as two orders of magnitude, which should aid the assignment of SiC_3 in the SMA survey and in future observations with ALMA.
A. J. Apponi, M. C. McCarthy, C. A. Gottlieb, and P. Thaddeus, Journ. Chem. Phys. 111, 3911 (1999).
A. J. Apponi, M. C. McCarthy, C. A. Gottlieb, and P. Thaddeus, Astrophys. Journ. Lett. 516, L103 (1999).
N. A. Patel, K. H. Young, S. Brünken, R. W. Wilson, P. Thaddeus, K. M. Menten, M. Reid, M. C. McCarthy, Dinh-V Trung, C. A. Gottlieb, and A. Hedden, Astrophys. Journ., in press (2009).

Affiliated with

Also associated with

No associations

Rating

New Laboratory Measurements of Rhomboidal SiC_3 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with New Laboratory Measurements of Rhomboidal SiC_3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and New Laboratory Measurements of Rhomboidal SiC_3 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1641899