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The Physical Characteristics of Interstellar Medium in NGC 3665 with Herschel Observations
Xiao, Meng-Yuan1,2,3; Zhao YH(赵应和)4,5,6; Gu, Qiu-Sheng1,2,3; Shi, Yong1,2,3; Gu, Qiu-Sheng(Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China)
发表期刊ASTROPHYSICAL JOURNAL
2018-02-20
卷号854期号:2
DOI10.3847/1538-4357/aaa895
产权排序第4完成单位
收录类别SCI
关键词Galaxies: Individual (Ngc 3665) Galaxies: Ism Infrared: Ism Ism: Lines And bAnds Galaxies: Elliptical And Lenticular Cd
摘要We present the analysis of the physical properties of the interstellar medium in the nearby early-type galaxy NGC 3665, based on the far-infrared photometric and spectroscopic data as observed by the Herschel Space Observatory. The fit to the spectral energy distribution reveals a high dust content in the galaxy, with a dust-to-stellar mass ratio of M-dust/M-* similar to 1.1 x 10(-4) that is nearly three times larger than the mean value of local S0+S0a galaxies. For the ionized regions (H II regions), the electron density (ne) is around 49.5 +/- 11.9 cm(-3) based on the [N II] 122 mu m/[N II] 205 mu m ratio. For the photodissociation regions, the heating efficiency ranges from 1.26. x. 10(-3) to 1.37 x 10-3 based on the ([C II]+[O I] 63 mu m)/L-TIR, which is slightly lower than other local galaxies; the hydrogen nucleus density and the strength of the far-UV radiation field are n similar to 10(4) cm(-3) and G0 similar to 10(-0.25), respectively. The above results are consistent with the presence of weak active galactic nuclei and a low level of star-forming activity in NGC 3665. Our results give strong support to the "morphological quenching" scenario, where a compact, massive bulge can stabilize the amount of cool gas against star formation.
项目资助者National Key Research and Development Program of China(2017YFA0402703, 2017YFA0402704) ; National Natural Science Foundation of China(11673057, 11733002) ; BMVIT (Austria) ; ESA-PRODEX (Belgium) ; CEA/CNES (France) ; DLR (Germany) ; ASI/INAF (Italy) ; CICYT/MCYT (Spain) ; CSA (Canada) ; NAOC (China) ; CEA (France) ; CNES (France) ; CNRS (France) ; ASI (Italy) ; MCINN (Spain) ; SNSB (Sweden) ; STFC (UK) ; UKSA (UK) ; NASA (USA)
语种英语
学科领域天文学
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000425389700009
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]EARLY-TYPE GALAXIES ; DIGITAL SKY SURVEY ; STAR-FORMING GALAXIES ; POTSDAM MULTIAPERTURE SPECTROPHOTOMETER ; ACTIVE GALACTIC NUCLEI ; ATLAS(3D) PROJECT ; NEARBY GALAXIES ; SPITZER OBSERVATIONS ; HOST GALAXIES ; PHOTODISSOCIATION REGIONS
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12287
专题丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
通讯作者Gu, Qiu-Sheng(Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China)
作者单位1.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, People's Republic of China
2.Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University, Nanjing 210093, People's Republic of China
3.Collaborative Innovation Center of Modern Astronomy and Space Exploration, Nanjing 210093, People's Republic of China
4.Yunnan Observatories, CAS, Kunming 650011, People's Republic of China
5.Key Laboratory for the Structure and Evolution of Celestial Objects, CAS, Kunming 650011, People's Republic of China
6.Center for Astronomical Mega-Science, CAS, 20A Datun Road, Chaoyang District, Beijing 100012, People's Republic of China
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Xiao, Meng-Yuan,Zhao YH,Gu, Qiu-Sheng,et al. The Physical Characteristics of Interstellar Medium in NGC 3665 with Herschel Observations[J]. ASTROPHYSICAL JOURNAL,2018,854(2).
APA Xiao, Meng-Yuan,Zhao YH,Gu, Qiu-Sheng,Shi, Yong,&Gu, Qiu-Sheng.(2018).The Physical Characteristics of Interstellar Medium in NGC 3665 with Herschel Observations.ASTROPHYSICAL JOURNAL,854(2).
MLA Xiao, Meng-Yuan,et al."The Physical Characteristics of Interstellar Medium in NGC 3665 with Herschel Observations".ASTROPHYSICAL JOURNAL 854.2(2018).
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