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
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
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
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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 -