H. M. Boechat-Roberty

Molecules with a peptide link in protostellar shocks: a comprehensive study of L1157

Interstellar molecules with a peptide link -NH-C(=O)-, like formamide (NH

Photostability of gas- and solid-phase biomolecules within dense molecular clouds due to soft X-rays

_2

Destruction of formic acid by soft X-rays in star-forming regions

CHO), acetamide (NH

Production of H+3 via photodissociation of organic molecules in interstellar clouds

_2

Photodissociation of organic molecules in star-forming regions III. Methanol

COCH

Photodissociation of organic molecules in star-forming regions. II. Acetic acid

_3

Formation routes of interstellar glycine involving carboxylic acids: possible favoritism between gas and solid phase.

) and isocyanic acid (HNCO) are particularly interesting for their potential role in pre-biotic chemistry. We have studied their emission in the protostellar shock regions L1157-B1 and L1157-B2, with the IRAM 30m telescope, as part of the ASAI Large Program. Analysis of the line profiles shows that the emission arises from the outflow cavities associated with B1 and B2. Molecular abundance of

Dissociation of the benzene molecule by ultraviolet and soft X-rays in circumstellar environment

\approx~(0.4-1.1)\times 10^{-8}

Ionization and dissociation of cometary gaseous organic molecules by solar wind particles – I. Formic acid

and

X-ray photodesorption and proton destruction in protoplanetary discs: pyrimidine

(3.3-8.8)\times 10^{-8}