Liu, Xunchuan ORCID: 0000-0001-8315-4248, Liu, Tie, Shen, Zhiqiang, Qin, Sheng-Li, Luo, Qiuyi, Cheng, Yu, Gu, Qilao, Zhang, Tianwei ORCID: 0000-0002-1466-3484, Zhu, Feng-Yao, Liu, Sheng-Yuan ORCID: 0000-0003-4603-7119, Lu, Xing, Zhao, Rongbing, Zhong, Weiye, Wu, Yajun, Li, Juan, Zhao, Zhang, Wang, Jinqing, Liu, Qinghui, Xia, Bo, Li, Bin, Fu, Li, Yan, Zhen, Zhang, Chao, Wang, Lingling, Ye, Qian, Tatematsu, Ken'ichi, Liu, Hongli, Shang, Hsien ORCID: 0000-0001-8385-9838, Xu, Fengwei, Lee, Chin-Fei, Zhang, Chao and Dutta, Somnath ORCID: 0000-0002-2338-4583 (2022). A Q-band Line Survey toward Orion KL Using the Tianma Radio Telescope. Astrophys. J. Suppl. Ser., 263 (1). BRISTOL: IOP Publishing Ltd. ISSN 1538-4365

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Abstract

We have conducted a line survey toward Orion KL using the Q-band receiver of the Tianma 65 m radio telescope (TMRT), covering 34.8-50 GHz with a velocity resolution between 0.79 and 0.55 km s(-1), respectively. The observations reach a sensitivity of the level of 1-8 mK, proving that the TMRT is sensitive for conducting deep-line surveys. In total, 597 Gaussian features are extracted. Among them, 177 radio recombination lines (RRLs) are identified, including 126, 40, and 11 RRLs of hydrogen, helium, and carbon, with a maximum delta n of 16, 7, and 3, respectively. The carbon RRLs are confirmed to originate from photodissociation regions with a V (LSR) similar to 9 km s(-1). In addition, 371 molecular transitions of 53 molecular species are identified. Twenty-one molecular species of this survey were not firmly detected in the Q band by Rizzo et al., including species such as H2CS, HCOOH, C2H5OH, H-2(13) CO, H2CCO, CH3CHO, CH2OCH2, HCN upsilon (2) = 1, and CH3OCHO upsilon ( t ) = 1. In particular, the vibrationally excited states of ethyl cyanide (C2H5CN upsilon 13/upsilon 21) are for the first time firmly detected in the Q band. NH3 (15,15) and (16,16) are identified, and they are so far the highest transitions of the NH3 inversion lines detected toward Orion KL. All of the identified lines can be reproduced by a radiative transfer model.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Liu, XunchuanUNSPECIFIEDorcid.org/0000-0001-8315-4248UNSPECIFIED
Liu, TieUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shen, ZhiqiangUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Qin, Sheng-LiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Luo, QiuyiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cheng, YuUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gu, QilaoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhang, TianweiUNSPECIFIEDorcid.org/0000-0002-1466-3484UNSPECIFIED
Zhu, Feng-YaoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Liu, Sheng-YuanUNSPECIFIEDorcid.org/0000-0003-4603-7119UNSPECIFIED
Lu, XingUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhao, RongbingUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhong, WeiyeUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wu, YajunUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Li, JuanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhao, ZhangUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wang, JinqingUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Liu, QinghuiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Xia, BoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Li, BinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fu, LiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yan, ZhenUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhang, ChaoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wang, LinglingUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ye, QianUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tatematsu, Ken'ichiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Liu, HongliUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shang, HsienUNSPECIFIEDorcid.org/0000-0001-8385-9838UNSPECIFIED
Xu, FengweiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lee, Chin-FeiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhang, ChaoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dutta, SomnathUNSPECIFIEDorcid.org/0000-0002-2338-4583UNSPECIFIED
URN: urn:nbn:de:hbz:38-692129
DOI: 10.3847/1538-4365/ac9127
Journal or Publication Title: Astrophys. J. Suppl. Ser.
Volume: 263
Number: 1
Date: 2022
Publisher: IOP Publishing Ltd
Place of Publication: BRISTOL
ISSN: 1538-4365
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
SPECTRAL SURVEY; ELECTRON TEMPERATURES; PHYSICAL CONDITIONS; LEVEL POPULATIONS; HYDROGENIC IONS; SUBMILLIMETER; MILLIMETER; EMISSION; REGION; GHZMultiple languages
Astronomy & AstrophysicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/69212

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