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

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◦ ≤ ≤ 5◦ and | b | ≤ 0. ◦5 with angular resolution of 15 arcsec, velocity resolution of 1 km s−1, and rms 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.

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Item Type:	Article
Authors/Creators:	Eden, DJ Moore, TJT Currie, MJ Rigby, AJ Rosolowsky, E Su, Y Kim, K-T Parsons, H Morata, O Chen, H-R Minamidani, T Park, G Ragan, SE Urquhart, JS Rani, R Tahani, K Billington, SJ Deb, S Figura, C Fujiyoshi, T Joncas, G Liao, LW Liu, T Ma, H Tuan-Anh, P Yun, H-S Zhang, S Zhu, M Henshaw, JD Longmore, SN Kobayashi, MIN Thompson, MA Ao, Y Campbell-White, J Ching, T-C Chung, EJ Duarte-Cabral, A Fich, M Gao, Y Graves, SF Jiang, X-J Kemper, F Kuan, Y-J Kwon, W Lee, CW Lee, J-E Liu, M Peñaloza, CH Peretto, N Phuong, NT Pineda, JE Plume, R Puspitaningrum, E Samal, MR Soam, A Sun, Y Tang, XD Traficante, A White, GJ Yan, C-H Yang, AY Yuan, J Yue, N Bemis, A Brunt, CM Chen, Z Cho, J Clark, PC Cyganowski, CJ Friberg, P Fuller, GA Han, I Hoare, MG https://orcid.org/0000-0003-2684-399X Izumi, N Kim, H-J Kim, J Kim, S Koch, EW Kuno, N Lacialle, KM Lai, S-P Lee, H Lee, Y-H Li, DL Liu, S-Y Mairs, S Pan, Z Qian, L Scicluna, P Shi, C-S Shi, H Srinivasan, S Tan, Q-H Thomas, HS Torii, K Trejo, A Umemoto, T Violino, G Wallström, S Wang, B Wu, Y Yuan, L Zhang, C Zhang, M Zhou, C Zhou, JJ
Copyright, Publisher and Additional Information:	© 2020 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. This is an author produced version of a paper published in Monthly Notices of the Royal Astronomical Society. Uploaded in accordance with the publisher's self-archiving policy.
Keywords:	molecular data – surveys – stars: formation – ISM: molecules – Galaxy: centre
Dates:	Published: November 2020 Published (online): 10 September 2020 Accepted: 4 September 2020
Institution:	The University of Leeds
Academic Units:	The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Astrophysics (Leeds)
Depositing User:	Symplectic Publications
Date Deposited:	24 Feb 2021 15:04
Last Modified:	24 Feb 2021 15:04
Status:	Published
Publisher:	Oxford University Press (OUP)
Identification Number:	10.1093/mnras/staa2734
Related URLs:	Author
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:171436

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

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