Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...494l.231m&link_type=abstract
Astrophysical Journal Letters v.494, p.L231
Astronomy and Astrophysics
Astronomy
26
Ism: Molecules, Line: Identification, Molecular Data, Molecular Processes, Radio Lines: Ism
Scientific paper
The linear cyanopolyynes HC 15 N and HC 17 N were detected in the laboratory by Fourier transform microwave spectroscopy. Enough rotational lines of each species were measured in the 5-11 GHz frequency range so that precise values for the rotational and centrifugal distortion constants can be determined and the entire rotational spectra of both molecules predicted to better than 1 km s ^{-1} in equivalent radial velocity over the range of interest to radio astronomy. Although there is a nearly constant decrement in line intensity from HC 3 N to HC 9 N of about seven, the decrement decreases by at least a factor of 2 on reaching HC 17 N, and as a result the lines of HC 17 N are nearly an order of magnitude stronger than predicted by extrapolation from the shorter cyanopolyynes. With a molecular weight of 219 amu and a rotational constant of slightly more than 50 MHz, HC 17 N is the longest carbon chain identified to date by high-resolution spectroscopy.
Chen Wei
Gottlieb Carl A.
Grabow Jens-Uwe
McCarthy Mary C.
Thaddeus Patrick
No associations
LandOfFree
Laboratory Detection of the Carbon Chains HC 15N and HC (17N 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 Laboratory Detection of the Carbon Chains HC 15N and HC (17N, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laboratory Detection of the Carbon Chains HC 15N and HC (17N will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1223582