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Young stars in the periphery of the Large Magellanic Cloud
Moni Bidin, C.1; Casetti-Dinescu, D. I.2; Girard, T. M.3; Zhang, L.4,5; Mendez, R. A.6; Vieira, K.7; Korchagin, V. I.8; van Altena, W. F.9
2017-04-01
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号466期号:3页码:3077-3087
摘要Despite their close proximity, the complex interplay between the two Magellanic Clouds, the Milky Way and the resulting tidal features, is still poorly understood. Recent studies have shown that the Large Magellanic Cloud (LMC) has a very extended disc strikingly perturbed in its outskirts. We search for recent star formation in the far outskirts of the LMC, out to similar to 30. from its centre. We have collected intermediate-resolution spectra of 31 young star candidates in the periphery of the LMC and measured their radial velocity, stellar parameters, distance and age. Our measurements confirm membership to the LMC of six targets, for which the radial velocity and distance values match well with those of the Cloud. These objects are all young (10-50 Myr), main-sequence stars, projected between 7(o) and 13(o) from the centre of the parent galaxy. We compare the velocities of our stars with those of a disc model, and find that our stars have low to moderate velocity differences with the disc model predictions, indicating that they were formed in situ. Our study demonstrates that recent star formation occurred in the far periphery of the LMC, where thus far only old objects were known. The spatial configuration of these newly formed stars appears ring-like with a radius of 12 kpc and a displacement of 2.6 kpc from the LMC's centre. This structure, if real, would be suggestive of a star formation episode triggered by an off-centre collision between the Small Magellanic Cloud and the LMC's disc.
文章类型Article
关键词Stars: Early-type Magellanic Clouds
WOS标题词Science & Technology ; Physical Sciences
资助者FONDECYT(1150060) ; FONDECYT(1150060) ; Chilean Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA)(BASAL PFB/06) ; Chilean Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA)(BASAL PFB/06) ; Millennium Institute of Astrophysics (MAS) of the Iniciativa Cientifica Milenio del Ministerio de Economia, Fomento y Turismo de Chile(IC120009) ; Millennium Institute of Astrophysics (MAS) of the Iniciativa Cientifica Milenio del Ministerio de Economia, Fomento y Turismo de Chile(IC120009) ; Chinese Academy of Sciences (CAS) through a CAS-CONICYT Postdoctoral Fellowship ; Chinese Academy of Sciences (CAS) through a CAS-CONICYT Postdoctoral Fellowship ; Natural Science Foundation of China (NSFC)(11303037 ; Natural Science Foundation of China (NSFC)(11303037 ; Russian Foundation for Basic Research (RFBR)(15-02-06204-a) ; Russian Foundation for Basic Research (RFBR)(15-02-06204-a) ; Las Campanas Observatory, Chile(CHILE-2015A-029) ; Las Campanas Observatory, Chile(CHILE-2015A-029) ; 11390371) ; 11390371) ; FONDECYT(1150060) ; FONDECYT(1150060) ; Chilean Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA)(BASAL PFB/06) ; Chilean Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA)(BASAL PFB/06) ; Millennium Institute of Astrophysics (MAS) of the Iniciativa Cientifica Milenio del Ministerio de Economia, Fomento y Turismo de Chile(IC120009) ; Millennium Institute of Astrophysics (MAS) of the Iniciativa Cientifica Milenio del Ministerio de Economia, Fomento y Turismo de Chile(IC120009) ; Chinese Academy of Sciences (CAS) through a CAS-CONICYT Postdoctoral Fellowship ; Chinese Academy of Sciences (CAS) through a CAS-CONICYT Postdoctoral Fellowship ; Natural Science Foundation of China (NSFC)(11303037 ; Natural Science Foundation of China (NSFC)(11303037 ; Russian Foundation for Basic Research (RFBR)(15-02-06204-a) ; Russian Foundation for Basic Research (RFBR)(15-02-06204-a) ; Las Campanas Observatory, Chile(CHILE-2015A-029) ; Las Campanas Observatory, Chile(CHILE-2015A-029) ; 11390371) ; 11390371)
DOI10.1093/mnras/stw3242
关键词[WOS]HORIZONTAL-BRANCH STARS ; SUBDWARF B STARS ; GLOBULAR-CLUSTERS ; CLOSE BINARIES ; WHITE-DWARFS ; STELLAR POPULATIONS ; MASS-DISTRIBUTION ; EHB BINARIES ; CARINA DWARF ; LEADING ARM
收录类别SCI
语种英语
资助者FONDECYT(1150060) ; FONDECYT(1150060) ; Chilean Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA)(BASAL PFB/06) ; Chilean Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA)(BASAL PFB/06) ; Millennium Institute of Astrophysics (MAS) of the Iniciativa Cientifica Milenio del Ministerio de Economia, Fomento y Turismo de Chile(IC120009) ; Millennium Institute of Astrophysics (MAS) of the Iniciativa Cientifica Milenio del Ministerio de Economia, Fomento y Turismo de Chile(IC120009) ; Chinese Academy of Sciences (CAS) through a CAS-CONICYT Postdoctoral Fellowship ; Chinese Academy of Sciences (CAS) through a CAS-CONICYT Postdoctoral Fellowship ; Natural Science Foundation of China (NSFC)(11303037 ; Natural Science Foundation of China (NSFC)(11303037 ; Russian Foundation for Basic Research (RFBR)(15-02-06204-a) ; Russian Foundation for Basic Research (RFBR)(15-02-06204-a) ; Las Campanas Observatory, Chile(CHILE-2015A-029) ; Las Campanas Observatory, Chile(CHILE-2015A-029) ; 11390371) ; 11390371) ; FONDECYT(1150060) ; FONDECYT(1150060) ; Chilean Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA)(BASAL PFB/06) ; Chilean Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA)(BASAL PFB/06) ; Millennium Institute of Astrophysics (MAS) of the Iniciativa Cientifica Milenio del Ministerio de Economia, Fomento y Turismo de Chile(IC120009) ; Millennium Institute of Astrophysics (MAS) of the Iniciativa Cientifica Milenio del Ministerio de Economia, Fomento y Turismo de Chile(IC120009) ; Chinese Academy of Sciences (CAS) through a CAS-CONICYT Postdoctoral Fellowship ; Chinese Academy of Sciences (CAS) through a CAS-CONICYT Postdoctoral Fellowship ; Natural Science Foundation of China (NSFC)(11303037 ; Natural Science Foundation of China (NSFC)(11303037 ; Russian Foundation for Basic Research (RFBR)(15-02-06204-a) ; Russian Foundation for Basic Research (RFBR)(15-02-06204-a) ; Las Campanas Observatory, Chile(CHILE-2015A-029) ; Las Campanas Observatory, Chile(CHILE-2015A-029) ; 11390371) ; 11390371)
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000398418600040
引用统计
被引频次:4[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/114a11/8219
专题应用天文研究部
作者单位1.Univ Catolica Norte, Inst Astron, Ave Angamos, Antofagasta 0610, Chile
2.Southern Connecticut State Univ, Dept Phys, 501 Crescent St, New Haven, CT 06515 USA
3.14 Dunn Rd, Hamden, CT 06518 USA
4.CAS South Amer Ctr Astron, Camino Observ, Santiago 1515, Chile
5.Chinese Acad Sci, Natl Astron Observ, Key Lab Optic Astron, 20A Datun Rd, Beijing 100012, Peoples R China
6.Univ Chile, Dept Astron, Casilla 36-D, Santiago, Chile
7.Ctr Invest Astron, Apartado Postal 264, Merida 5101A, Venezuela
8.Southern Fed Univ, Inst Phys, Stachki St 124, Rostov Na Donu 344090, Russia
9.Yale Univ, Astron Dept, POB 208101, New Haven, CT 06520 USA
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Moni Bidin, C.,Casetti-Dinescu, D. I.,Girard, T. M.,et al. Young stars in the periphery of the Large Magellanic Cloud[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,466(3):3077-3087.
APA Moni Bidin, C..,Casetti-Dinescu, D. I..,Girard, T. M..,Zhang, L..,Mendez, R. A..,...&van Altena, W. F..(2017).Young stars in the periphery of the Large Magellanic Cloud.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,466(3),3077-3087.
MLA Moni Bidin, C.,et al."Young stars in the periphery of the Large Magellanic Cloud".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 466.3(2017):3077-3087.
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