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G15.684-0.29: One of the Largest Galactic Infrared Bubbles Showing Strong Evidence of Triggered Star Formation
Zhou, Jianjun1,2; Zhou, Dongdong1,3; Esimbek, Jarken1,2; Baan, Willem1,4; Wu, Gang1,2; Ji, Weiguang1; He, Yuxin1,2; Li, Dalei1,2; Sailanbek, Serikbek1,3,5; Komesh, Toktarkhan1,3,5; Tang, Xindi1,2
2020-07-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume897Issue:1Pages:74
Contribution Rank1
AbstractThe bubble G15.684-0.29 has a radius of 15.7 pc. Its large size indicates that it may have enough time to trigger star formation. We identify 39 dense cold clumps around the bubble from the Hi-GAL survey. All of them satisfy the criteria for forming massive stars, and most of them lie in the bubble shell. We identify 19 molecular clumps around the bubble from the(12)CO(3-2) survey, all of which are gravitationally bound. We found 9 Class I YSOs, 28 Class II YSOs, and 12 transition disks (TDs) around the bubble. For those young stellar objects (YSOs) located within the bubble boundary, 6 of 7 Class I YSOs lie in the shell, 15 of 22 Class II YSOs lie inside the bubble, and 3 of 5 TDs lie inside the bubble. The dynamical age of G15.684-0.29 in a turbulent medium is similar to 4 Myr, which is much greater than the shell fragmentation time, similar to 0.82-1.74 Myr. We suggest that triggered star formation may be ongoing in the shell of the bubble, and the collect and collapse model may work here. However, we cannot rule out the possibility that the radiation-driven implosion model may work on the formation of some YSOs. As we expected, the larger bubble has a much longer dynamical age, but we failed to find a clear age gradient for YSOs around the bubble.
KeywordCO line emission Interstellar medium H II regions Dust shells Molecular clouds Star formation
DOI10.3847/1538-4357/ab94c0
URL查看原文
Indexed BySCI
Language英语
WOS KeywordH-II REGIONS ; BORDERS ; COLLECT ; I. ; RADIATION ; ATLASGAL ; PROJECT ; 1ST
Funding ProjectKey Laboratory of Xinjiang Uygur Autonomous Region[2019D04023] ; National Natural Science foundation of China (NSFC)[11973076] ; NSFC[11433008] ; NSFC[11603063] ; NSFC[11703074] ; NSFC[11703073] ; NSFC[11903070] ; CAS Light of West China Program[2018-XBQNXZ-B-024] ; CAS Light of West China Program[2016-QNXZ-B-23] ; CAS Light of West China Program[2016-QNXZ-B-22] ; Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; Youth Innovation Promotion Association CAS
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000548353800001
PublisherIOP PUBLISHING LTD
Funding OrganizationKey Laboratory of Xinjiang Uygur Autonomous Region ; National Natural Science foundation of China (NSFC) ; NSFC ; CAS Light of West China Program ; Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; Youth Innovation Promotion Association CAS
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Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/3586
Collection射电天文研究室_恒星形成与演化研究团组
射电天文研究室
Corresponding AuthorZhou, Jianjun
Affiliation1.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, 150 Sci 1 St, Urumqi 830011, Peoples R China
3.Univ Chinese Acad Sci, Yuquan Rd, Beijing 100080, Peoples R China
4.Netherlands Inst Radio Astron, NL-7991 PD Dwingeloo, Netherlands
5.Al Farabi Kazakh Natl Univ, Fac Phys & Technol, Dept Solid State Phys & Nonlinear Phys, Alma Ata 050040, Kazakhstan
First Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Corresponding Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
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GB/T 7714
Zhou, Jianjun,Zhou, Dongdong,Esimbek, Jarken,et al. G15.684-0.29: One of the Largest Galactic Infrared Bubbles Showing Strong Evidence of Triggered Star Formation[J]. ASTROPHYSICAL JOURNAL,2020,897(1):74.
APA Zhou, Jianjun.,Zhou, Dongdong.,Esimbek, Jarken.,Baan, Willem.,Wu, Gang.,...&Tang, Xindi.(2020).G15.684-0.29: One of the Largest Galactic Infrared Bubbles Showing Strong Evidence of Triggered Star Formation.ASTROPHYSICAL JOURNAL,897(1),74.
MLA Zhou, Jianjun,et al."G15.684-0.29: One of the Largest Galactic Infrared Bubbles Showing Strong Evidence of Triggered Star Formation".ASTROPHYSICAL JOURNAL 897.1(2020):74.
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