Bursting Activity in a High-Mass Star-Forming Region G33.640.21 Observed with the 6.7 GHz Methanol Maser

Fujisawa Kenta; Sugiyama Koichiro; Aoki Nozomu; Hirota Tomoya; Mochizuki Nanako; Doi Akihiro; Honma Mareki; Kobayashi Hideyuki; Kawaguchi Noriyuki; Ogawa Hideo; Omodaka Toshihiro; Yonekura Yoshinori

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Bursting Activity in a High-Mass Star-Forming Region G33.640.21 Observed with the 6.7 GHz Methanol Maser

机译：用6.7 GHz甲醇Maser观测到的高质量恒星形成区G33.640.21的爆裂活动

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Wereportonthedetectionofburstsof6.7GHzmethanolmaseremissioninahigh-massstar-formingregion,G33.64$$-$$0.21.Oneofthespectralcomponentsofthemaserinthissourcechangeditsfluxdensityby7timesthatofthepreviousday,anditdecayedwithatimescaleof5days.Theburstoccurredrepeatedlyinthespectralcomponent,andnoothercomponentsshowedsuchvariability.AVLBIobservationwiththeJapaneseVLBINetwork(JVN)showedthattheburstlocationwasatthesouthwestedgeofaspatialdistribution,andtheburstingphenomenonoccurredinaregionmuchsmallerthan70AU.Wesuggestanimpulsiveenergyrelease,likeastellarflare,asapossiblemechanismfortheburst.Theseresultsimplythat6.7GHzmethanolmaserscouldbeausefulnewprobeforstudyingburstingactivityintheprocessofthestarformationofhigh-massYSOswithahigh-resolutionofAUscale.

机译：Wereportonthedetectionofburstsof6.7GHzmethanolmaseremissioninahigh-massstar-formingregion，G33.64 $$ - $$ 0.21.Oneofthespectralcomponentsofthemaserinthissourcechangeditsfluxdensityby7timesthatofthepreviousday，anditdecayedwithatimescaleof5days.Theburstoccurredrepeatedlyinthespectralcomponent，andnoothercomponentsshowedsuchvariability.AVLBIobservationwiththeJapaneseVLBINetwork（JVN）showedthattheburstlocationwasatthesouthwestedgeofaspatialdistribution，andtheburstingphenomenonoccurredinaregionmuchsmallerthan70AU.Wesuggestanimpulsiveenergyrelease，likeastellarflare，asapossiblemechanismfortheburst.Theseresultsimplythat6.7GHzmethanolmaserscouldbeausefulnewprobeforstudyingburstingactivityintheprocessofthestarformationofhigh-massYSOswithahigh-resolutionofAUscale。

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《PASJ: Publications of the Astronomical Society of Japan》 |2012年第1期|共页
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Fujisawa Kenta; Sugiyama Koichiro; Aoki Nozomu; Hirota Tomoya; Mochizuki Nanako; Doi Akihiro; Honma Mareki; Kobayashi Hideyuki; Kawaguchi Noriyuki; Ogawa Hideo; Omodaka Toshihiro; Yonekura Yoshinori;
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机译：用6.7 GHz甲醇maser观测到高质量恒星形成区G33.64-0.21的爆发活动
2. The Relationship between 6.7 GHz Methanol Masers and Radio Recombination Lines in High-mass Star-forming Regions [J] . Ouyang Xu-Jia, Chen Xi, Shen Zhi-Qiang, The Astrophysical Journal. Supplement Series . 2019,第1期

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Bursting Activity in a High-Mass Star-Forming Region G33.640.21 Observed with the 6.7 GHz Methanol Maser

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