Abstract
We have searched three hot molecular cores for submillimetre emission from the nucleic acid building block pyrimidine. We obtain upper limits to the total pyrimidine (beam-averaged) column densities towards Sgr B2(N), Orion KL and W51 el/e2 of 1.7 × 1014, 2.4 × 1014 and 3.4 × 1014 cm-2, respectively. The associated upper limits to the pyrimidine fractional abundances lie in the range (0.3-3) × 10-10. Implications of this result for interstellar organic chemistry, and for the prospects of detecting nitrogen heterocycles in general, are discussed briefly.
Original language | English |
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Pages (from-to) | 650-656 |
Number of pages | 7 |
Journal | Monthly Notices of the Royal Astronomical Society |
Volume | 345 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2003 Oct 21 |
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Keywords
- Astrobiology
- ISM: individual: Orion KL
- ISM: individual: Sgr B2(N)
- ISM: individual: W51 el/e2
- ISM: molecules
- Line: identification
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science
Cite this
A search for interstellar pyrimidine. / Kuan, Yi Jehng; Yan, Chi Hung; Charnley, Steven B.; Kisiel, Zbigniew; Ehrenfreund, Pascale; Huang, Hui Chun.
In: Monthly Notices of the Royal Astronomical Society, Vol. 345, No. 2, 21.10.2003, p. 650-656.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A search for interstellar pyrimidine
AU - Kuan, Yi Jehng
AU - Yan, Chi Hung
AU - Charnley, Steven B.
AU - Kisiel, Zbigniew
AU - Ehrenfreund, Pascale
AU - Huang, Hui Chun
PY - 2003/10/21
Y1 - 2003/10/21
N2 - We have searched three hot molecular cores for submillimetre emission from the nucleic acid building block pyrimidine. We obtain upper limits to the total pyrimidine (beam-averaged) column densities towards Sgr B2(N), Orion KL and W51 el/e2 of 1.7 × 1014, 2.4 × 1014 and 3.4 × 1014 cm-2, respectively. The associated upper limits to the pyrimidine fractional abundances lie in the range (0.3-3) × 10-10. Implications of this result for interstellar organic chemistry, and for the prospects of detecting nitrogen heterocycles in general, are discussed briefly.
AB - We have searched three hot molecular cores for submillimetre emission from the nucleic acid building block pyrimidine. We obtain upper limits to the total pyrimidine (beam-averaged) column densities towards Sgr B2(N), Orion KL and W51 el/e2 of 1.7 × 1014, 2.4 × 1014 and 3.4 × 1014 cm-2, respectively. The associated upper limits to the pyrimidine fractional abundances lie in the range (0.3-3) × 10-10. Implications of this result for interstellar organic chemistry, and for the prospects of detecting nitrogen heterocycles in general, are discussed briefly.
KW - Astrobiology
KW - ISM: individual: Orion KL
KW - ISM: individual: Sgr B2(N)
KW - ISM: individual: W51 el/e2
KW - ISM: molecules
KW - Line: identification
UR - http://www.scopus.com/inward/record.url?scp=0142231413&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0142231413&partnerID=8YFLogxK
U2 - 10.1046/j.1365-8711.2003.06975.x
DO - 10.1046/j.1365-8711.2003.06975.x
M3 - Article
AN - SCOPUS:0142231413
VL - 345
SP - 650
EP - 656
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
SN - 0035-8711
IS - 2
ER -