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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
Source PublicationASTROPHYSICAL JOURNAL
2018-02-20
Volume854Issue:2
DOI10.3847/1538-4357/aaa895
Contribution Rank第4完成单位
Indexed BySCI
KeywordGalaxies: Individual (Ngc 3665) Galaxies: Ism Infrared: Ism Ism: Lines And bAnds Galaxies: Elliptical And Lenticular Cd
Abstract

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.

Funding ProjectNational Key Research and Development Program of China[2017YFA0402703] ; National Key Research and Development Program of China[2017YFA0402704] ; National Natural Science Foundation of China[11673057] ; National Natural Science Foundation of China[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)
Funding OrganizationNational 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)
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000425389700009
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordEARLY-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
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/12287
Collection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
Corresponding AuthorGu, Qiu-Sheng
Affiliation1.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
Recommended Citation
GB/T 7714
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.(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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