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

Eden, D. J.; Moore, T. J. T.; Currie, M. J.; Rigby, A. J.; Rosolowsky, E.; Su, Y.; Kim, Kee-Tae; Parsons, H.; Morata, O.; Chen, H. -R.; Minamidani, T.; Park, Geumsook; Ragan, S. E.; Urquhart, J. S.; Rani, R.; Tahani, K.; Billington, S. J.; Deb, S.; Figura, C.; Fujiyoshi, T.; Joncas, G.; Liao, L. W.; Liu, T.; Ma, H.; Tuan-Anh, P.; Yun, Hyeong-Sik; Zhang, S.; Zhu, M.; Henshaw, J. D.; Longmore, S. N.; Kobayashi, M. I. N.; Thompson, M. A.; Ao, Y.; Campbell-White, J.; Ching, T. -C.; Chung, E. J.; Duarte-Cabral, A.; Fich, M.; Gao, Y.; Graves, S. F.; Jiang, X. -J.; Kemper, F.; Kuan, Y. -J.; Kwon, W.; Lee, C. W.; Lee, J. -E.; Liu, M.; Penaloza, C. H.; Peretto, N.; Phuong, N. T.; Pineda, J. E.; Plume, R.; Puspitaningrum, E.; Samal, M. R.; Soam, A.; Sun, Y.; Tang, X. D.; Traficante, A.; White, G. J.; Yan, C. -H.; Yang, A.; Yuan, J.; Yue, N.; Bemis, A.; Brunt, C. M.; Chen, Z.; Cho, J.; Clark, P. C.; Cyganowski, C. J.; Friberg, P.; Fuller, G. A.; Han, I.; Hoare, M. G.; Izumi, N.; Kim, H. -J.; Kim, J.; Kim, S.; Koch, E. W.; Kuno, N.; Lacialle, K. M.; Lai, S. -P.; Lee, H.; Lee, Y.-H.; Li, D. L.; Liu, S. -Y.; Mairs, S.; Pan, Z.; Qian, L.; Scicluna, P.; Shi, C. -S.; Shi, H.; Srinivasan, S.; Tan, Q. -H.; Thomas, H. S.; Torii, K.; Trejo, A.; Umemoto, T.; Violino, G.; Wallstrom, S.; Wang, B.; Wu, Y.; Yuan, L.; Zhang, C.; Zhang, M.; Zhou, C.; Zhou, J. J.

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Date

11/2020

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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°≤ℓ≤5° and ∣b∣≤0°.5 with angular resolution of 15 arcsec, velocity resolution of 1 km s−1, and rms ΔT∗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.

Citation

Eden , D J , Moore , T J T , Currie , M J , Rigby , A J , Rosolowsky , E , Su , Y , Kim , K-T , Parsons , H , Morata , O , Chen , H -R , Minamidani , T , Park , G , Ragan , S E , Urquhart , J S , Rani , R , Tahani , K , Billington , S J , Deb , S , Figura , C , Fujiyoshi , T , Joncas , G , Liao , L W , Liu , T , Ma , H , Tuan-Anh , P , Yun , H-S , Zhang , S , Zhu , M , Henshaw , J D , Longmore , S N , Kobayashi , M I N , Thompson , M A , Ao , Y , Campbell-White , J , Ching , T -C , Chung , E J , Duarte-Cabral , A , Fich , M , Gao , Y , Graves , S F , Jiang , X -J , Kemper , F , Kuan , Y -J , Kwon , W , Lee , C W , Lee , J -E , Liu , M , Penaloza , C H , Peretto , N , Phuong , N T , Pineda , J E , Plume , R , Puspitaningrum , E , Samal , M R , Soam , A , Sun , Y , Tang , X D , Traficante , A , White , G J , Yan , C -H , Yang , A , Yuan , J , Yue , N , Bemis , A , Brunt , C M , Chen , Z , Cho , J , Clark , P C , Cyganowski , C J , Friberg , P , Fuller , G A , Han , I , Hoare , M G , Izumi , N , Kim , H -J , Kim , J , Kim , S , Koch , E W , Kuno , N , Lacialle , K M , Lai , S -P , Lee , H , Lee , Y-H , Li , D L , Liu , S -Y , Mairs , S , Pan , Z , Qian , L , Scicluna , P , Shi , C -S , Shi , H , Srinivasan , S , Tan , Q -H , Thomas , H S , Torii , K , Trejo , A , Umemoto , T , Violino , G , Wallstrom , S , Wang , B , Wu , Y , Yuan , L , Zhang , C , Zhang , M , Zhou , C & Zhou , J J 2020 , ' CHIMPS2 : survey description and 12 CO emission in the Galactic Centre ' , Monthly Notices of the Royal Astronomical Society , vol. 498 , no. 4 , pp. 5936–5951 . https://doi.org/10.1093/mnras/staa2734

Publication

Monthly Notices of the Royal Astronomical Society

Status

Peer reviewed

DOI

https://doi.org/10.1093/mnras/staa2734

ISSN

0035-8711

Type

Journal article

Rights

Copyright © 2020 the Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1093/mnras/staa2734.

Description

Funding: DJE is supported by an STFC postdoctoral grant (ST/R000484/1). Additional funding support is provided by the Science and Technology Facilities Council of the United Kingdom and participating universities in the United Kingdom and Canada.

Collections

University of St Andrews Research

URI

http://hdl.handle.net/10023/20857