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A Search for Interstellar Pyrimidine | | Yi-Jehng Kuan
; Chi-Hung Yan
; Steven B. Charnley
; Zbigniew Kisiel
; Pascale Ehrenfreund
; Hui-Chun Huang
; | | Date: |
7 Aug 2003 | | Journal: | Mon.Not.Roy.Astron.Soc. 345 (2003) 650 | | Subject: | astro-ph | | Affiliation: | 1 and 2), Chi-Hung Yan , Steven B. Charnley , Zbigniew Kisiel , Pascale Ehrenfreund and Hui-Chun Huang ( National Taiwan Normal University, ASIAA, Taiwan, NASA Ames, Polish Academy of Sciences, Poland Leiden Observatory, The Netherlands | | Abstract: | We have searched three hot molecular cores for submillimeter 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 e1/e2 of 1.7E+14 cm^{-2}, 2.4E+14 cm^{-2} and 3.4E+14 cm^{-2}, respectively. The associated upper limits to the pyrimidine fractional abundances lie in the range (0.3-3)E-10. Implications of this result for interstellar organic chemistry, and for the prospects of detecting nitrogen heterocycles in general, are briefly discussed. | | Source: | arXiv, astro-ph/0308116 | | Services: | Forum | Review | PDF | Favorites | |
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