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Study of the molecular gas in the central parsec of the Galaxy through regularized 3D spectroscopy

Published online by Cambridge University Press:  22 May 2014

A. Ciurlo ,
T. Paumard ,
D. Rouan  and
Y. Clénet
A. Ciurlo
Affiliation:
LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot 5 place Jules Janssen, 92195 Meudon, France email: [email protected], [email protected]
T. Paumard
Affiliation:
LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot 5 place Jules Janssen, 92195 Meudon, France email: [email protected], [email protected]
D. Rouan
Affiliation:
LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot 5 place Jules Janssen, 92195 Meudon, France email: [email protected], [email protected]
Y. Clénet
Affiliation:
LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot 5 place Jules Janssen, 92195 Meudon, France email: [email protected], [email protected]
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Abstract

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The cool gas in the central parsec of the Galaxy is organized in the surrounding circumnuclear disk, made of neutral gas, and the internal minispiral, composed of dust and ionized gas. In order to study the transition between them we have investigated the presence of H2 neutral gas in this area, through NIR spectro-imaging data observed with SPIFFI. To preserve the spatial resolution we implemented a new method consisting of a regularized 3D fit. We concentrated on the supposedly fully ionized central cavity and the very inner edge of the CND. H2 is detected everywhere: at the boundary of the CND and in the central cavity, where it seems to split in two components, one in the background of the minispiral and one inside the Northern arm.

Keywords

central parsec: molecular gasmethods: data analysistechniques: spectroscopic
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S303: The Galactic Center: Feeding and Feedback in a Normal Galactic Nucleus , October 2013 , pp. 83 - 85
Copyright
Copyright © International Astronomical Union 2014 

References

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