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Spectroscopic Observation and Analysis of HII Regions in M33 with MMT: Temperatures and Oxygen Abundances
Lin, Zesen1,2; Hu, Ning1,2; Kong, Xu1,2; Gao, Yulong1,2; Zou, Hu3; Wang, Enci1,2; Cheng, Fuzhen1,2; Fang, Guanwen4; Lin, Lin5; Wang, Jing6
2017-06-20
发表期刊ASTROPHYSICAL JOURNAL
卷号842期号:2
摘要The spectra of 413 star-forming (or H II) regions in M33 (NGC 598) were observed using the multifiber spectrograph of Hectospec at the 6.5 m Multiple Mirror Telescope. Using this homogeneous spectra sample, we measured the intensities of emission lines and some physical parameters, such as electron temperatures, electron densities, and metallicities. Oxygen abundances were derived via the direct method (when available) and two empirical strong-line methods, namely, O3N2 and N2. At the high-metallicity end, oxygen abundances derived from the O3N2 calibration were higher than those derived from the N2 index, indicating an inconsistency between O3N2 and N2 calibrations. We present a detailed analysis of the spatial distribution of gas-phase oxygen abundances in M33 and confirm the existence of the axisymmetric global metallicity distribution that is widely assumed in the literature. Local variations were also observed and subsequently associated with spiral structures to provide evidence of radial migration driven by arms. Our O/H gradient fitted out to 1.1 R-25 resulted in slopes of -0.17 +/- 0.03, -0.19 +/- 0.01, and -0.16 +/- 0.17 dex R-25(-1), utilizing abundances from O3N2, N2 diagnostics, and a direct method, respectively.
文章类型Article
关键词Galaxies: Abundances Galaxies: Evolution Galaxies: Individual (M33) Galaxies: Ism Galaxies: Spiral h Ii Regions
WOS标题词Science & Technology ; Physical Sciences
资助者National Astronomical Observatories of China ; National Astronomical Observatories of China ; Chinese Academy of Sciences (Strategic Priority Research Program, "The Emergence of Cosmological Structures")(XDB09000000) ; Chinese Academy of Sciences (Strategic Priority Research Program, "The Emergence of Cosmological Structures")(XDB09000000) ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; National Basic Research Program of China (973 Program)(2015CB857004) ; National Basic Research Program of China (973 Program)(2015CB857004) ; National Natural Science Foundation of China (NSFC)(1320101002 ; National Natural Science Foundation of China (NSFC)(1320101002 ; Yunnan Applied Basic Research Projects(2014FB155) ; Yunnan Applied Basic Research Projects(2014FB155) ; Youth Innovation Fund by the University of Science and Technology of China(WK2030220019) ; Youth Innovation Fund by the University of Science and Technology of China(WK2030220019) ; 11433005 ; 11433005 ; 11421303 ; 11421303 ; 11673004) ; 11673004) ; National Astronomical Observatories of China ; National Astronomical Observatories of China ; Chinese Academy of Sciences (Strategic Priority Research Program, "The Emergence of Cosmological Structures")(XDB09000000) ; Chinese Academy of Sciences (Strategic Priority Research Program, "The Emergence of Cosmological Structures")(XDB09000000) ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; National Basic Research Program of China (973 Program)(2015CB857004) ; National Basic Research Program of China (973 Program)(2015CB857004) ; National Natural Science Foundation of China (NSFC)(1320101002 ; National Natural Science Foundation of China (NSFC)(1320101002 ; Yunnan Applied Basic Research Projects(2014FB155) ; Yunnan Applied Basic Research Projects(2014FB155) ; Youth Innovation Fund by the University of Science and Technology of China(WK2030220019) ; Youth Innovation Fund by the University of Science and Technology of China(WK2030220019) ; 11433005 ; 11433005 ; 11421303 ; 11421303 ; 11673004) ; 11673004)
DOI10.3847/1538-4357/aa6f14
关键词[WOS]H-II REGIONS ; EXCITATION COLLISION STRENGTHS ; NEARBY SPIRAL GALAXIES ; STAR-FORMING GALAXIES ; STELLAR POPULATION ; TRANSITION-PROBABILITIES ; AZIMUTHAL VARIATIONS ; COMPOSITION GRADIENT ; CHEMICAL ABUNDANCES ; STARBURST GALAXIES
收录类别SCI
语种英语
资助者National Astronomical Observatories of China ; National Astronomical Observatories of China ; Chinese Academy of Sciences (Strategic Priority Research Program, "The Emergence of Cosmological Structures")(XDB09000000) ; Chinese Academy of Sciences (Strategic Priority Research Program, "The Emergence of Cosmological Structures")(XDB09000000) ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; National Basic Research Program of China (973 Program)(2015CB857004) ; National Basic Research Program of China (973 Program)(2015CB857004) ; National Natural Science Foundation of China (NSFC)(1320101002 ; National Natural Science Foundation of China (NSFC)(1320101002 ; Yunnan Applied Basic Research Projects(2014FB155) ; Yunnan Applied Basic Research Projects(2014FB155) ; Youth Innovation Fund by the University of Science and Technology of China(WK2030220019) ; Youth Innovation Fund by the University of Science and Technology of China(WK2030220019) ; 11433005 ; 11433005 ; 11421303 ; 11421303 ; 11673004) ; 11673004) ; National Astronomical Observatories of China ; National Astronomical Observatories of China ; Chinese Academy of Sciences (Strategic Priority Research Program, "The Emergence of Cosmological Structures")(XDB09000000) ; Chinese Academy of Sciences (Strategic Priority Research Program, "The Emergence of Cosmological Structures")(XDB09000000) ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; National Basic Research Program of China (973 Program)(2015CB857004) ; National Basic Research Program of China (973 Program)(2015CB857004) ; National Natural Science Foundation of China (NSFC)(1320101002 ; National Natural Science Foundation of China (NSFC)(1320101002 ; Yunnan Applied Basic Research Projects(2014FB155) ; Yunnan Applied Basic Research Projects(2014FB155) ; Youth Innovation Fund by the University of Science and Technology of China(WK2030220019) ; Youth Innovation Fund by the University of Science and Technology of China(WK2030220019) ; 11433005 ; 11433005 ; 11421303 ; 11421303 ; 11673004) ; 11673004)
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000403655500004
引用统计
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.bao.ac.cn/handle/114a11/8813
专题光学天文研究部
作者单位1.Univ Sci & Technol China, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Peoples R China
2.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
4.Dali Univ, Inst Astron & Hist Sci & Technol, Dali 671003, Peoples R China
5.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
6.CSIRO Astron & Space Sci, Australia Telescope Natl Facil, POB 76, Epping, NSW 1710, Australia
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Lin, Zesen,Hu, Ning,Kong, Xu,et al. Spectroscopic Observation and Analysis of HII Regions in M33 with MMT: Temperatures and Oxygen Abundances[J]. ASTROPHYSICAL JOURNAL,2017,842(2).
APA Lin, Zesen.,Hu, Ning.,Kong, Xu.,Gao, Yulong.,Zou, Hu.,...&Wang, Jing.(2017).Spectroscopic Observation and Analysis of HII Regions in M33 with MMT: Temperatures and Oxygen Abundances.ASTROPHYSICAL JOURNAL,842(2).
MLA Lin, Zesen,et al."Spectroscopic Observation and Analysis of HII Regions in M33 with MMT: Temperatures and Oxygen Abundances".ASTROPHYSICAL JOURNAL 842.2(2017).
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