2003MNRAS.345..650K

Query : 2003MNRAS.345..650K

2003MNRAS.345..650K - Mon. Not. R. Astron. Soc., 345, 650-656 (2003/October-3)

A search for interstellar pyrimidine.

KUAN Y.-J., YAN C.-H., CHARNLEY S.B., KISIEL Z., EHRENFREUND P. and HUANG H.-C.

Abstract (from CDS):

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 e1/e2 of 1.7x1014, 2.4x1014 and 3.4x1014 cm–2, respectively. The associated upper limits to the pyrimidine fractional abundances lie in the range (0.3-3)x10–10. Implications of this result for interstellar organic chemistry, and for the prospects of detecting nitrogen heterocycles in general, are discussed briefly.

Abstract Copyright: 2003 RAS

Journal keyword(s): astrobiology - line: identification - ISM: individual: Orion KL - ISM: individual: Sgr B2(N) - ISM: individual: W51 e1/e2 (read: W 51e1,W 51e2) - ISM: molecules

Simbad objects: 8

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Number of rows : 8
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 RAFGL 618 pA* 04 42 53.6242032600 +36 06 53.400902220   16.32   12.59   C-rich 1027 0
2 NAME Orion-KL SFR 05 35 14.16 -05 22 21.5           ~ 2421 1
3 IRC +10216 C* 09 47 57.40632 +13 16 43.5648           C9,5e 2455 0
4 NAME Sgr B2 (North) Rad 17 47 20.2 -28 22 21           ~ 742 1
5 W 51e1 HII 19 23 43.785 +14 30 26.11           ~ 141 0
6 W 51e2 Ma* 19 23 43.906 +14 30 34.48           ~ 222 0
7 W 51 SNR 19 23 50 +14 06.0           ~ 1352 1
8 V* V1610 Cyg pA* 21 02 18.27 +36 41 37.0           F5Iae 892 1

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