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The HI/OH/Recombination line survey of the inner Milky Way (THOR): Survey overview and data release 1

Beuther, H., Bihr, S., Rugel, M., Johnston, K., Wang, Y., Walter, F., Brunthaler, A., Walsh, A.J., Ott, J., Stil, J., and others. (2016) The HI/OH/Recombination line survey of the inner Milky Way (THOR): Survey overview and data release 1. Astronomy and Astrophysics, 595 . A32. ISSN 0004-6361. E-ISSN 1432-0746. (doi:10.1051/0004-6361/201629143) (KAR id:59959)

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Context. The past decade has witnessed a large number of Galactic plane surveys at angular resolutions below 20??. However, no comparable high-resolution survey exists at long radio wavelengths around 21?cm in line and continuum emission.

Methods. Employing the Karl G. Jansky Very Large Array (VLA) in the C-array configuration and a large program, we observe the HI 21?cm line, four OH lines, nineteen Hn? radio recombination lines as well as the continuum emission from 1 to 2?GHz in full polarization over a large part of the first Galactic quadrant.

Conclusions. The HI/OH/Recombination line survey of the Milky Way (THOR) opens a new window to the different parts of the ISM. It enables detailed studies of molecular cloud formation, conversion of atomic to molecular gas, and feedback from Hii regions as well as the magnetic field in the Milky Way. It is highly complementary to other surveys of our Galaxy, and comparing the different datasets will allow us to address many open questions.

Item Type: Article
DOI/Identification number: 10.1051/0004-6361/201629143
Uncontrolled keywords: stars: formation / ISM: clouds / ISM: structure / ISM: kinematics and dynamics / ISM: magnetic fields / stars: evolution
Divisions: Faculties > Sciences > School of Physical Sciences
Depositing User: James Urquhart
Date Deposited: 20 Jan 2017 13:54 UTC
Last Modified: 29 May 2019 18:33 UTC
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