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: firstname.lastname@example.org
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
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.