|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'928
Articles rated: 2609
25 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Interstellar detection of c-C3D2 | | S. Spezzano
; S. Brünken
; P. Schilke
; P. Caselli
; K. M. Menten
; M. C. McCarthy
; L. Bizzocchi
; S. P. Trevino-Morales
; Y. Aikawa
; S. Schlemmer
; | | Date: |
8 May 2013 | | Abstract: | We report the first interstellar detection of c-C3D2. The doubly deuterated
cyclopropenylidene, a carbene, has been detected toward the starless cores TMC-
1C and L1544 using the IRAM 30m telescope. The J(Ka,Kc) = 3(0,3)-2(1,2),
3(1,3)-2(0,2), and 2(2,1)-1(1,0) transitions of this species have been observed
at 3 mm in both sources. The expected 1:2 intensity ratio has been found in the
3(0,3)-2(1,2) and 3(1,3)-2(0,2) lines, belonging to the para and ortho species
respectively. We also observed lines of the main species, c-C3H2, the singly
deuterated c-C3HD, and the species with one 13C off of the principal axis of
the molecule, c-H13CC2H. The lines of c-C3D2 have been observed with high
signal to noise ratio, better than 7.5 sigma in TMC-1C and 9 sigma in L1544.
The abundance of doubly deuterated cyclopropenylidene with respect to the
normal species is found to be (0.4 - 0.8)% in TMC-1C and (1.2 - 2.1)% in L1544.
The deuteration of this small hydrocarbon ring is analysed with a comprehensive
gas-grain model, the first including doubly deuterated species. The observed
abundances of c-C3D2 can be explained solely by gas-phase processes, supporting
the idea that c-C3H2 is a good indicator of gas-phase deuteration. | | Source: | arXiv, 1305.1954 | | 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