The Minispiral in the Galactic Center revisited

Abstract

We present the results of a re-examination of a [Ne II] line emission data cube (λ12.8 μm) and discuss the kinematic structure of the inner \sim 3 \times 4 pc of the Galaxy. The quality of [Ne II] as a tracer of ionized gas is examined by comparing it to radio data. A three dimensional representation of the data cube allows us to disentangle features which are projected onto the same location on the sky. A model of gas streams in different planes is fitted to the data. We find that most of the material is located in a main plane which itself is defined by the inner edge of the Circum-Nuclear Disk in the Galactic Center. Finally, we present a possible three dimensional model of the gas streams.

12 pages, 18 figures; submitted to New Astronomy; higher resolution version and two animations available via anonymous ftp ftp://ftp.ita.uni-heidelberg.de/pub/ITA/wjd/Minispiral

Cited by in corpus (25)

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• A cloudy model for the Circumnuclear Disk in the Galactic Centre
• Dense Ionized and Neutral Gas Surrounding Sgr A*
• Ionized Gas in the Galactic Center: New Observations and Interpretation
• Nature of the Galactic centre NIR-excess sources. I. What can we learn from the continuum observations of the DSO/G2 source?
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• Stability of Gas Clouds in Galactic Nuclei: An Extended Virial Theorem
• Mid-Infrared studies of dusty sources in the Galactic Center
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• The infrared K-band identification of the DSO/G2 source from VLT and Keck data
• Discovery of a Dense Association of Stars in the Vicinity of the Supermassive Black Hole Sgr A*