Journal
ASTROPHYSICAL JOURNAL
Volume 702, Issue 2, Pages 1025-1035Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/702/2/1025
Keywords
ISM: abundances; ISM: individual (L1527); ISM: molecules; stars: formation
Categories
Funding
- Ministry of Education, Culture, Sports, Science, and Technologies [21224002, 15071201, 19-6825]
- Grants-in-Aid for Scientific Research [21224002] Funding Source: KAKEN
Ask authors/readers for more resources
We have conducted millimeter-wave observations of deuterated species of various carbon-chain molecules toward a low-mass star-forming region, L1527, which shows extraordinary richness of carbon-chain molecules in a vicinity of the protostar (Warm Carbon Chain Chemistry; WCCC). We have detected the spectral lines of 1-C3D, C4D, C4HD, DC3N, DC5N, and c-C3HD, where 1-C3D and C4HD are detected for the first time in space. The deuterium fractionation ratios are found to be moderate (2% to 7%), although they tend to be higher than those in the starless core, TMC-1. The upper limit to the [CH2DOH]/[CH3OH] ratio is also as low as 3%. Therefore, high deuterium fractionation ratios reported for hot corino sources are not seen in L1527. The observed ratios mean that the depletion of CO onto dust grains had not proceeded far in L1527, compared to the hot corino case. This would be consistent with a short timescale of the starless core phase, as suggested for the possible origin of WCCC.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available