Molecular loops in the Galactic centre; evidence for magnetic floatation accelerating molecular gas
نویسندگان
چکیده
منابع مشابه
Molecular Gas in Galactic Nuclei
Dense molecular clouds are critical to the activity occurring in galactic nuclei. They are the active component from which starbursts arise, and this dense interstellar gas may be the fuel for AGNs. In both the nearby infrared bright galaxies (eg. M82, NGC 253, and IC342) and the ultralu-minous IRAS galaxies, high resolution millimeter line mapping has shown extremely high gas surface densities...
متن کاملHot Molecular Gas in the Galactic Center
Using the new 23 GHz receivers at the Very Large Array (VLA), we have detected NH3(6,6) emission (ν = 25.056025 GHz) from hot (> 150 K) molecular clouds in the central 10 pc of the Galaxy. This is the first successful detection of NH3(6,6) with the VLA. The brightest emission comes from a region interior to the “circumnuclear disk” (CND), less than 1.5 pc in projected distance from Sgr A*. This...
متن کاملThe vertical equilibrium of molecular gas in the galactic disk
We examine the vertical structure and equilibrium of the molecular gas layer in the galactic disk, measuring its scale height and velocity dispersion as a function of Galactic radius by modeling the CO emission at the tangent points. The model takes into account emission from a large path length along the line of sight, corresponding to an interval (∆R) of typically a few hundred parsecs in gal...
متن کاملStudies of molecular clouds at the Galactic centre
Interstellar molecular clouds play an essential role in the Universe. Such clouds are invoked for the production and destruction of stars, galaxies and gas and also for energy transport in galaxies. The Galaxy, or the Milky Way, is a large spiral galaxy, with a central bar structure, that harbours a few hundred billion stars and large amounts of gas and dust. At the centre of the Galaxy, a 4 mi...
متن کاملA Molecular Face-on View of the Galactic Centre Region
We present a method to derive positions of molecular clouds along the lines of sight from a quantitative comparison between 2.6mm CO emission lines and 18 cm OH absorption lines, and apply it to the central kiloparsecs of the Milky Way. With some simple but justifiable assumptions, we derive a face-on distribution of the CO brightness and corresponding radial velocity in the Galactic centre wit...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2006
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s174392130700289x