Dissemin is shutting down on January 1st, 2025

Published in

Oxford University Press, Monthly Notices of the Royal Astronomical Society, 4(498), p. 5936-5951, 2020

DOI: 10.1093/mnras/staa2734

Links

Tools

Export citation

Search in Google Scholar

CHIMPS2: Survey description and 12CO emission in the Galactic Centre

Journal article published in 2020 by D. J. Eden ORCID, T. J. T. Moore, M. J. Currie, A. J. Rigby ORCID, E. Rosolowsky ORCID, Y. Su, Kee-Tae Kim, H. Parsons, O. Morata, H.-R. Chen, T. Minamidani, Geumsook Park, S. E. Ragan, J. S. Urquhart, R. Rani and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

Full text: Download

Green circle
Preprint: archiving allowed
Green circle
Postprint: archiving allowed
Green circle
Published version: archiving allowed
Data provided by SHERPA/RoMEO

Abstract

ABSTRACT The latest generation of Galactic Plane surveys is enhancing our ability to study the effects of galactic environment upon the process of star formation. We present the first data from CO Heterodyne Inner Milky Way Plane Survey 2 (CHIMPS2). CHIMPS2 is a survey that will observe the Inner Galaxy, the Central Molecular Zone (CMZ), and a section of the Outer Galaxy in 12CO, 13CO, and C18O $(J = 3→ 2)$ emission with the Heterodyne Array Receiver Program on the James Clerk Maxwell Telescope (JCMT). The first CHIMPS2 data presented here are a first look towards the CMZ in 12CO J = 3 → 2 and cover ${-}3^{∘ }\, \le \, \ell \, \le \, 5^{∘ }$ and $∣ {b} ∣ \, \le \, 0{_{.}^{∘}} 5$ with angular resolution of 15 arcsec, velocity resolution of 1 km s−1, and rms $Δ \, T_A ^* =$ 0.58 K at these resolutions. Such high-resolution observations of the CMZ will be a valuable data set for future studies, whilst complementing the existing Galactic Plane surveys, such as SEDIGISM, the ${Herschel}$ infrared Galactic Plane Survey, and ATLASGAL. In this paper, we discuss the survey plan, the current observations and data, as well as presenting position–position maps of the region. The position–velocity maps detect foreground spiral arms in both absorption and emission.