|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'500'096
Articles rated: 2609
19 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Rotational spectroscopy of isotopic vinyl cyanide, H$_2$C=CH$-$C$equiv$N, in the laboratory and in space | | Holger S.P. Müller
; Arnaud Belloche
; Karl M. Menten
; Claudia Comito
; Peter Schilke
; | | Date: |
12 Jun 2008 | | Abstract: | The rotational spectra of singly substituted $^{13}$C and $^{15}$N isotopic
species of vinyl cyanide have been studied in natural abundances between 64 and
351 GHz. In combination with previous results, greatly improved spectroscopic
parameters have been obtained which in turn helped to identify transitions of
the $^{13}$C species for the first time in space through a molecular line
survey of the extremely line-rich interstellar source Sagittarius B2(N) in the
3 mm region with some additional observations at 2 mm. The $^{13}$C species are
detected in two compact ($sim 2.3’’$), hot (170 K) cores with a column density
of $sim 3.8 imes 10^{16}$ and $1.1 imes 10^{16}$ cm$^{-2}$, respectively.
In the main source, the so-called ’’Large Molecule Heimat’’, we derive an
abundance of $2.9 imes 10^{-9}$ for each $^{13}$C species relative to H$_2$.
An isotopic ratio $^{12}$C/$^{13}$C of 21 has been measured. Based on a
comparison to the column densities measured for the $^{13}$C species of ethyl
cyanide also detected in this survey, it is suggested that the two hot cores of
Sgr B2(N) are in different evolutionary stages. Supplementary laboratory data
for the main isotopic species recorded between 92 and 342 GHz permitted an
improvement of its spectroscopic parameters as well. | | Source: | arXiv, 0806.2098 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER