The Galactic centre mini-spiral in the mm-regime

The mini-spiral is a feature of the interstellar medium in the central similar to 2 pc of the Galactic center. It is composed of several streamers of dust and ionised and atomic gas with temperatures between a few 100K to 10 super( 4) K. The authors' observations were carried out at 1.3 mm and...

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Bibliographic Details
Published in:Astronomy and astrophysics (Berlin) 2012-02, Vol.538, p.1-1
Main Authors: Kunneriath, D, Eckart, A, Vogel, S N, Teuben, P, Muzic, K, Schodel, R, Garcia-Marin, M, Moultaka, J, Staguhn, J, Straubmeier, C, Zensus, J A, Valencia-S, M, Karas, V
Format: Article
Language:English
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Summary:The mini-spiral is a feature of the interstellar medium in the central similar to 2 pc of the Galactic center. It is composed of several streamers of dust and ionised and atomic gas with temperatures between a few 100K to 10 super( 4) K. The authors' observations were carried out at 1.3 mm and 3 mm with the mm interferometric array CARMA in California in March and April 2009, with the MIR instrument VISIR at ESO's VLT in June 2006, and the NIR Br gamma with VLT NACO in August 2009. They present high resolution maps of the mini-spiral, and obtain a spectral index of 0.5 +mr 0.25 for Sgr A*, indicating an inverted synchrotron spectrum. They find electron densities within the range ... for the mini-spiral from the radio continuum maps, along with a dust mass contribution of ... from the MIR dust continuum, and extinctions ranging from 1.8-3 at 2.16 mu m in the Br gamma line. (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:0004-6361
1432-0746