SIMBAD references

2018MNRAS.478.2962Z - Mon. Not. R. Astron. Soc., 478, 2962-2975 (2018/August-2)

Complex organic molecules in the Galactic Centre: the N-bearing family.

ZENG S., JIMENEZ-SERRA I., RIVILLA V.M., MARTIN S., MARTIN-PINTADO J., REQUENA-TORRES M.A., ARMIJOS-ABENDANO J., RIQUELME D. and ALADRO R.

Abstract (from CDS):

We present an unbiased spectral line survey towards the Galactic Centre (GC) quiescent giant molecular cloud, G+0.693 using the GBT and IRAM 30 telescopes. Our study highlights an extremely rich organic inventory of abundant amount of nitrogen (N)-bearing species in a source without signatures of star formation. We report the detection of 17 N-bearing species in this source, of which eight are complex organic molecules. A comparison of the derived abundances relative to H2 is made across various Galactic and extragalactic environments. We conclude that the unique chemistry in this source is likely to be dominated by low-velocity shocks with X-rays/cosmic rays also playing an important role in the chemistry. Like previous findings obtained for O-bearing molecules, our results for N-bearing species suggest a more efficient hydrogenation of these species on dust grains in G+0.693 than in hot cores in the Galactic disc, as a consequence of the low-dust temperatures coupled with energetic processing by X-ray/cosmic ray radiation in the GC.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): ISM: abundances - ISM: clouds - ISM: molecules - Galaxy: centre

CDS comments: In references: the reference for Coutens et al. 2017a is 2018MNRAS.475.2016C, and Armijos-Abendano et al. 2014 is 2015MNRAS.446.3842A.

Simbad objects: 17

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2020.01.18-12:57:52

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