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Unveiling the whole from its parts or to see the forest for the trees

Published online by Cambridge University Press:  13 January 2020

Eduardo Janot-Pacheco ,
Marina Rachid ,
Philippe Bendjoya ,
Armando Domiciano ,
Caroline Antunes-Rosa ,
Marcelo Emilio  and
Claudia Lage
Eduardo Janot-Pacheco
Affiliation:
Institute of Astronomy, Geophysics and Atmospheric Sciences, So Paulo University, Brazil email: eduardo.janot@iag.usp.br
Marina Rachid
Affiliation:
Institute of Astronomy, Geophysics and Atmospheric Sciences, So Paulo University, Brazil email: eduardo.janot@iag.usp.br
Philippe Bendjoya
Affiliation:
Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, France email: Philippe.BENDJOYA@unice.fr
Armando Domiciano
Affiliation:
Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, France email: Philippe.BENDJOYA@unice.fr
Caroline Antunes-Rosa
Affiliation:
Carlos Chagas Filho Institute of Biophysics, Rio de Janeiro Federal University, Brazil email: lage@biof.ufrj.br
Marcelo Emilio
Affiliation:
Ponta Grossa State University, Brazil email: marcelo_emilio@yahoo.com
Claudia Lage
Affiliation:
Carlos Chagas Filho Institute of Biophysics, Rio de Janeiro Federal University, Brazil email: lage@biof.ufrj.br
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Abstract

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If biologically complex molecules as DNA were present in the extraterrestrial targets, their spectral signatures would be rather difficult to be unambiguously identified. As a matter of fact, the molecular array of a single nucleobasis will generate a tangled spectral signature. On the other hand, a part of it, e.g. bands due to the group of HNCO of guanine may have been detected but associated to smaller molecules, e.g. isocianic acid (HNCO). However, if comprised in a nucleobasis, its detection would be misinterpreted. Five key transitions were preliminarly selected for either purines and pyrimidines that should be observed together in the same target. If this happens, it may be that we are detecting the whole from its parts.

Keywords

ISM: moleculesISM: lines and bandsastrochemistry
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S345: Origins: From the Protosun to the First Steps of Life , August 2018 , pp. 215 - 218
Copyright
© International Astronomical Union 2020 

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