Class I methanol masers in NGC 253: Alcohol at the end of the bar

doi:10.1093/mnras/stx2076

NTSC-IR

	Class I methanol masers in NGC 253: Alcohol at the end of the bar
	Ellingsen, S. P.1; Chen, X.2,3; Breen, S. L.4; Qiao, H. -H.3,5
	2017-11-01
发表期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN	0035-8711
卷号	472 期号:1 页码:604-615
摘要	We have used the Australia Telescope Compact Array to observe the 36.2-GHz class I methanol maser emission towards NGC 253 and find that it is located at the interface between the nuclear ring and both ends of the galactic bar. This is thought to be the location of the inner Linblad resonance and we suggest that the maser emission in this region is likely due to large-scale cloud-cloud collisions. We have detected the first extragalactic 44.1-GHz class I methanol maser and find that it is associated with the 36.2-GHz maser emission. In contrast to the class I methanol masers found in Galactic star formation regions, the 44.1-GHz emission in NGC 253 is two orders of magnitude weaker than the 36.2-GHz masers. Both the 36.2-and 44.1-GHz emission is orders of magnitude stronger than expected from typical high-mass star formation regions. This demonstrates that the luminous class I methanol masers observed in NGC253 are significantly different from those associated with Galactic star formation.
关键词	masers galaxies: individual: NGC253 galaxies: starburst radio lines: ISM
资助者	Commonwealth of Australia ; Commonwealth of Australia ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Commonwealth of Australia ; Commonwealth of Australia ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Commonwealth of Australia ; Commonwealth of Australia ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Commonwealth of Australia ; Commonwealth of Australia ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC)
DOI	10.1093/mnras/stx2076
关键词[WOS]	STARBURST GALAXY NGC-253 ; DENSE MOLECULAR GAS ; SUPERNOVA-REMNANTS ; EXTRAGALACTIC METHANOL ; VLA OBSERVATIONS ; ACTIVE GALAXIES ; HIGH-RESOLUTION ; STAR-FORMATION ; CH3OH MASER ; NEARBY
语种	英语
资助项目	Commonwealth of Australia ; National Natural Science Foundation of China (NSFC)[NSFC 11590781]
资助者	Commonwealth of Australia ; Commonwealth of Australia ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Commonwealth of Australia ; Commonwealth of Australia ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Commonwealth of Australia ; Commonwealth of Australia ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Commonwealth of Australia ; Commonwealth of Australia ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC)
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
WOS记录号	WOS:000413765800048
出版者	OXFORD UNIV PRESS
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/11458
专题	中国科学院国家授时中心
通讯作者	Ellingsen, S. P.
作者单位	1.Univ Tasmania, Sch Phys Sci, Private Bag 37, Hobart, Tas 7001, Australia 2.GuangZhou Univ, Ctr Astrophys, Guangzhou 510006, Guangdong, Peoples R China 3.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 4.Univ Sydney, Sch Phys, Sydney Inst Astron, Sydney, NSW 2006, Australia 5.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Shanxi, Peoples R China
推荐引用方式 GB/T 7714	Ellingsen, S. P.,Chen, X.,Breen, S. L.,et al. Class I methanol masers in NGC 253: Alcohol at the end of the bar[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,472(1):604-615.
APA	Ellingsen, S. P.,Chen, X.,Breen, S. L.,&Qiao, H. -H..(2017).Class I methanol masers in NGC 253: Alcohol at the end of the bar.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,472(1),604-615.
MLA	Ellingsen, S. P.,et al."Class I methanol masers in NGC 253: Alcohol at the end of the bar".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 472.1(2017):604-615.