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Study of the molecular gas in the central parsec of the Galaxy through regularized 3D spectroscopy
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Study of the molecular gas in the central parsec of the Galaxy through regularized 3D spectroscopy
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Journal Article
Study of the molecular gas in the central parsec of the Galaxy through regularized 3D spectroscopy
2013
Overview
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.
Publisher
Cambridge University Press
Subject
