Laboratory and astrophysical detection of the hyperfine structure of the J = 1-0 rotational transition of HC17O+
Abstract
The three hyperfine components of the J=1<- 0 rotational transition of HC17O+ have been resolved in laboratory leading to a value of the quadrupole coupling constant eQq of 4.595 MHz, which is far below the previous estimate of an upper limit of 12 MHz by Guélin et al. \cite{gcl82}. The HC17O+ (1-0) spectrum has been observed toward the ``molecular peak'' of L1544 and analyzed on the basis of the laboratory hyperfine frequencies.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- March 2001
- DOI:
- 10.1051/0004-6361:20000544
- Bibcode:
- 2001A&A...368..712D
- Keywords:
-
- MOLECULAR DATA;
- METHODS: LABORATORY;
- ISM: INDIVIDUAL(L1544);
- MOLECULES;
- RADIO LINES: ISM