Volume 473, Number 1, October I 2007
|Page(s)||177 - 180|
|Section||Interstellar and circumstellar matter|
|Published online||25 May 2007|
A search for pre-biotic molecules in hot cores*
Onsala Space Observatory, Chalmers University of Technology, 43992 Onsala, Sweden e-mail: email@example.com
2 European Southern Observatory, Alonso de Cordova 3107, Vitacura, Casilla 19001 Santiago, Chile
3 Computer science and engineering, Chalmers University of Technology, 41296 Gothenburg, Sweden
Accepted: 11 May 2007
Aims.Our aim is to better understand the complex chemistry of organic molecules in the interstellar medium, leading to the formation of pre-biotic molecules such as amino acids.
Methods.We have performed a search for the pre-biotic molecules amino acetonitrile (H2N CH2 CN) and vinyl acetylene (C2H3 CCH) towards four northern hot core sources using the Onsala 20 m telescope.
Results.We have determined upper limits to the column density of amino acetonitrile (1– cm-2) and vinyl acetylene (2– cm-2) in the observed sources. In addition, from the absence of other lines within the observed frequency band, we have further constrained the column density of oxiranecarbonitrile (c-C3H3 NO) and amino-ethanol (NH2 CH2 CH2 OH) in these sources.
Key words: ISM: molecules / astrobiology / radio lines: ISM / astrochemistry
© ESO, 2007
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