Multi-transition study of the peculiar merger Arp 299

doi:10.1088/1674-4527/17/8/77

	Multi-transition study of the peculiar merger Arp 299
	Zhu, Ming 1,2; Jiao, Qian 1,2,3
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2017-08-01
卷号	17 期号:8
关键词	Galaxies: Merge Galaxies: Arp 299 Galaxies: Dust Galaxies: Molecular Gas Galaxies: Wann Center
DOI	10.1088/1674-4527/17/8/77
文献子类	Article
英文摘要	We present a multi-transition study to investigate the physical properties of dust and molecular gas in the archetypical merger Arp 299 by using data including James Clerk Maxwell Telescope (JCMT) 850 and 450 pm observations, Herschel 500, 350, 250, 160 and 70 p.m continuum maps, as well as the CO(3-2), CO(4-3) low-J CO lines and CO(11-10), CO(13-12), CO(14-13) high-J CO lines. The CO(3-2) and CO(4-3) lines are observed by JCMT, and the CO(11-10), CO(13-12), CO(14-13) lines are available on the Herschel Science Archive. The resolution of the Herschel Spectral and Photometric Imaging Receiver (SPIRE) Fourier transform spectrometer (FTS) CO(11-10) data is similar to that of the JCMT CO(3-2) line, while the resolution of the SPIRE/FTS CO(13-12) and Photodetector Array Camera and Spectrometer (PACS) CO(14-13) data is similar to that of JCMT CO(4-3), allowing us to obtain accurate line ratios of ICO(11-10)/ICO(3-2), ICO(13-12)/ICO(4-3) and ICO(14-13)/ICO(4-3). By modeling the spectral energy distribution of the continuum data, we conclude that two components (cold and wann) exist in the dust, with the warm component occupying a small percent of the total dust mass. We further use a radiative transfer analysis code, RADEX, to calculate the density, temperature and column density of warm gas in the central region, which shows that the kinetic temperature T-kin, is in the range 110 to 150 K and hydrogen density n(H-2) is in the range 10(4.7) -10(5.5) cm(-3). We show that the hot dust is located in the central region of IC 694 with a radius of similar to 4" and estimate that the wann gas mass is in the range 3.8 x 10(7) M-circle dot to 7.7 x 10(7) M-circle dot, which contains 5.0%-15.0% of the total mass for the region of IC 694. We also calculate the star formation rate of the galaxy in particular, which is much higher than that of the Milky Way.
WOS关键词	BRIGHT GALAXY SAMPLE ; STAR-FORMATION ; MOLECULAR GAS ; INTENSITY RATIOS ; ARP-299 ; SYSTEM ; CALIBRATION ; STARBURST ; DUST ; CO
WOS研究方向	Astronomy & Astrophysics
语种	英语
WOS记录号	WOS:000416068900001
资助机构	China Ministry of Science and Technology under the State Key Development Program for Basic Research(2012CB821800) ; China Ministry of Science and Technology under the State Key Development Program for Basic Research(2012CB821800) ; National Natural Science Foundation of China (NSFC)(U1531246) ; National Natural Science Foundation of China (NSFC)(U1531246) ; Chinese Academy of Sciences (CAS)(U1531246) ; Chinese Academy of Sciences (CAS)(U1531246) ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences(XDB09000000) ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences(XDB09000000) ; China Ministry of Science and Technology under the State Key Development Program for Basic Research(2012CB821800) ; China Ministry of Science and Technology under the State Key Development Program for Basic Research(2012CB821800) ; National Natural Science Foundation of China (NSFC)(U1531246) ; National Natural Science Foundation of China (NSFC)(U1531246) ; Chinese Academy of Sciences (CAS)(U1531246) ; Chinese Academy of Sciences (CAS)(U1531246) ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences(XDB09000000) ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences(XDB09000000)
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/20288]
专题	国家天文台_射电天文研究部
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Beijing 100012, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Ming,Jiao, Qian. Multi-transition study of the peculiar merger Arp 299[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2017,17(8).
APA	Zhu, Ming,&Jiao, Qian.(2017).Multi-transition study of the peculiar merger Arp 299.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,17(8).
MLA	Zhu, Ming,et al."Multi-transition study of the peculiar merger Arp 299".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 17.8(2017).