A CO Survey of the LMC with NANTEN: II. Catalog of Molecular Clouds

Mizuno Norikazu; Yamaguchi Reiko; Mizuno Akira; Rubio M?3nica; Abe Rihei; Saito Hiro; Onishi Toshikazu; Yonekura Yoshinori; Yamaguchi Nobuyuki; Ogawa Hideo; Fukui Yasuo

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A CO Survey of the LMC with NANTEN: II. Catalog of Molecular Clouds

机译：与NANTEN对LMC进行的CO调查：II。分子云目录

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Froma12CO($$J=1hbox{--}0$$)surveywiththeNANTENtelescope,wepresentacompletecatalogofgiantmolecularclouds(GMCs)intheLargeMagellanicCloud.Intotal,107COcloudshavebeenidentified,55ofwhichweredetectedatmorethan3observedpositions.Forthe55clouds,thephysicalproperties,suchassize,line-width,virialmass,andCOluminosity,arecataloged.Fromastatisticalanalysisofthesequantities,weshowthatGMCsintheLMCareclosetogravitationalequilibrium.AcomparisonwithHidataindicatesthatmostoftheCOcloudsaredistributedindensepartsofHigas,whoseHicolumndensityisgreaterthan$$10^{21},mathrm{cm}^{-2}$$.Itisnotablethatthemassratioofthemolecular-to-atomichydrogenofthelowerradialvelocitycomponentofgasis$$sim0.2$$,whichisafactorof2higherthanthatofthegaseous-diskcomponent,$$sim0.1$$.Molecularcloudsareapparentlyformedefficientlyintheparentatomiccloudsinthelowervelocitycomponent.TheCOArc,whichisafewkpcscaleorderedstructureofCOcloudsalongthesouthernopticaledgeofthegalaxy,correspondswelltothethelowervelocitycomponentofHigas.

机译：Froma12CO（$$ J = 1hbox { - } 0 $$）surveywiththeNANTENtelescope，wepresentacompletecatalogofgiantmolecularclouds（系膜细胞）intheLargeMagellanicCloud.Intotal，107COcloudshavebeenidentified，55ofwhichweredetectedatmorethan3observedpositions.Forthe55clouds，thephysicalproperties，suchassize，线宽，virialmass，andCOluminosity，arecataloged.Fromastatisticalanalysisofthesequantities，weshowthatGMCsintheLMCareclosetogravitationalequilibrium.AcomparisonwithHidataindicatesthatmostoftheCOcloudsaredistributedindensepartsofHigas ，其全息密度大于$ 10 ^ {21}，磁导率{cm} ^ {-2} $$。值得注意的是，低径向速度分量的分子氢原子对原子氢的质量比SIM0.2 $$的高，而在气体云盘状分量中，CO的效率比云层的$$ 0.1的低，而在气态磁盘分量中，CO2的比原先的低。这是安全的，有序的CO云的结构沿银河系的非典型边缘较长，对应于Higas的较低速度分量。

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《PASJ: Publications of the Astronomical Society of Japan》 |2001年第6期|共页
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Mizuno Norikazu; Yamaguchi Reiko; Mizuno Akira; Rubio M?3nica; Abe Rihei; Saito Hiro; Onishi Toshikazu; Yonekura Yoshinori; Yamaguchi Nobuyuki; Ogawa Hideo; Fukui Yasuo;
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A CO Survey of the LMC with NANTEN: II. Catalog of Molecular Clouds

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