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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >CO(J = 3a€“2) on-the-fly mapping of the nearby spiral galaxies NGCa€‰628 and NGCa€‰7793: Spatially resolved CO(J = 3a€“2) star-formation law
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CO(J = 3a€“2) on-the-fly mapping of the nearby spiral galaxies NGCa€‰628 and NGCa€‰7793: Spatially resolved CO(J = 3a€“2) star-formation law

机译：邻近螺旋星系NGCa·628和NGCa·7793的CO（J = 3a·2）动态映射：空间分辨的CO（J = 3a·2）星型定律

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摘要

WepresenttheresultsofCO(J=3a€“2)on-the-flymappingsoftwonearbynon-barredspiralgalaxies,NGCa€‰628andNGCa€‰7793,withtheAtacamaSubmillimeterTelescopeExperimentataneffectiveangularresolutionof25a€3.WesuccessfullyobtainedglobaldistributionsofCO(J=3a€“2)emissionovertheentiredisksatasub-kpcresolutionforbothgalaxies.Weexaminedthespatiallyresolved(sub-kpc)relationshipbetweenCO(J=3a€“2)luminosities($$L^{prime}_{ mCO(3-2)}$$)andinfrared(IR)luminosities(LIR)forNGCa€‰628,NGCa€‰7793,andMa€‰83,andcompareditwithgloballuminositiesofaJCMT(JamesClerkMaxwellTelescope)NearbyGalaxyLegacySurveysample.Wefoundastrikinglinear$$L^{prime}_{ mCO(3-2)}$$a€“LIRcorrelationoverthefourordersofmagnitude,andthecorrelationisconsistentevenwiththatforultraluminousIRgalaxiesandsubmillimeter-selectedgalaxies.Inaddition,weexaminedthespatiallyresolvedrelationshipbetweenCO(J=3a€“2)intensities(ICO(3a€“2))andextinction-correctedstarformationrates(SFRs)forNGCa€‰628,NGCa€‰7793,andMa€‰83,andcompareditwiththatforGiantMolecularCloudsinMa€‰33and14nearbygalaxycenters.WefoundalinearICO(3a€“2)a€“SFRcorrelationwitha??1dexscatter.WeconcludethattheCO(J=3a€“2)star-formationlaw(i.e.,linear$$L^{prime}_{ mCO(3-2)}$$a€“LIRandICO(3a€“2)a€“SFRcorrelations)isuniversallyapplicabletovarioustypesandspatialscalesofgalaxies;fromspatiallyresolvednearbygalaxydiskstodistantIR-luminousgalaxies,withina??1dexscatter.
机译：我们用Atacama亚毫米望远镜实验通过有效的角分辨率（25 = 3）对飞碟软件（不带棒螺旋星系，NGCa 628和NGCa 7793）的飞行制图软件进行了分析。我们成功地求出了通过CO（J = 3）计算得到的全部因数（CO = J）。 J = 3a€2的发光度（$$ L ^ {prime} _ {mCO（3-2）} $$）和红外（IR）发光度分别为NGCa 628，NGCa7793和Ma83 ，andcompareditwithgloballuminositiesofaJCMT（JamesClerkMaxwellTelescope）NearbyGalaxyLegacySurveysample.Wefoundastrikinglinear $$ L ^ {}素_ {MCO（3-2）} $$一个€“LIRcorrelationoverthefourordersofmagnitude，andthecorrelationisconsistentevenwiththatforultraluminousIRgalaxiesandsubmillimeter-selectedgalaxies.Inaddition，weexaminedthespatiallyresolvedrelationshipbetweenCO（J = 3A€“2）强度（ICO（ 3a”（2））和NGCa 628，NGCa7793和Ma 83的消光校正星型率（SFR），并与M中的巨分子云相比一个33和14个星系中心附近。我们发现线性ICO（3a“ 2” a）与一个SFR相关性与1 dex散点相关。 ）} $$ a“ LIRandICO（3a“ 2）a”与“ SFR相关性”通常适用于各种类型和空间规模的星系;从空间上分辨由邻近的星系盘到远红外星系，并带有1 dex散射。

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