首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Near- to mid-infrared imaging and spectroscopy of two buried AGNs of the nearby merging galaxy NGCa€‰6240 with Subaru/IRCS+AO and GTC/CanariCam
【24h】

Near- to mid-infrared imaging and spectroscopy of two buried AGNs of the nearby merging galaxy NGCa€‰6240 with Subaru/IRCS+AO and GTC/CanariCam

机译:使用Subaru / IRCS + AO和GTC / CanariCam合并附近合并星系NGCa€6240的两个埋藏AGN的近中红外成像和光谱

获取原文
           

摘要

Wereportnear-infraredKa€‰a€2,La€2,andMa€‰a€2bandimagingobservationsofthenearbymerginggalaxyNGCa€‰6240withtheInfraredCameraandSpectrographontheSubarutelescope.TheobservationswereperformedwiththeassistanceoftheSubaruAdaptiveOpticsSystem,andtheachievedspatialresolutionswerearound0$${^{primeprime}_{.}}$$10a€“0$${^{primeprime}_{.}}$$20.Wealsoobtainednewmid-infraredimagingintheSi-2filterband(8.7a€‰??m)andN-band(7.5a€“13a€‰??m)spectroscopyofthisgalaxywiththeCanariCamontheGranTelescopioCanariaswitha??spatialresolutionof0$${^{primeprime}_{.}}$$4a€“0$${^{primeprime}_{.}}$$5.IntheKa€‰a€2bandimagethetwonucleiofthegalaxyeachshowadoublepeaksuggestingthecomplexgeometryofthesource,whiletheLa€2,Ma€‰a€2,andSi-2bandimagesshowsinglecompactstructuresineachofthetwonuclei.Assumingthatthecentercoreobservedatwavelengthslongerthan3.8a€‰??misassociatedwithdustheatedbytheburiedAGN,were-evaluatedthespectralenergydistributions(SEDs)ofthesouthernnucleusfrom2to30a€‰??mwithadditionalliteraturevalues,andperformedtheSED+spectroscopyfitusingtheclumpytorusmodelsofNenkovaet??al.(2008a,ApJ,685,145;??2008b,ApJ,685,160)andaBayesianfittingapproach.Themodelfitsuggeststhatthehighcoveringfactortorusemissioninthesouthernnucleusisalsoobscuredbyforegrounddustinthehostgalaxy.TheestimatedAGNbolometricluminosityofthesouthernnucleus,Lbol(AGN)??a????1a€‰?—a€‰1045a€‰erga€‰sa?’1,accountsforapproximately40%ofthewholeluminosityofthesystem.
机译:我们在近红外光谱仪和红外光谱仪上将银河NGCa 6240合并后,在近红外的Ka2,La 2和Ma 2波段成像软件上进行了观测。在原始条件下,{e}约1元,{a在原始的分辨率下,{a}的原始分辨率为{{0}} {{0}}。 } _ {。}} $ 20美元。我们还用CanariCamontheGranTelescopioCanarias的空间分辨率为0 $$ {^ {primeprime} _ {。}} $$ 4a€“ 0 $$ {^ {primeprime} _ {。}} $$ 5。在Ka波段2中,星系的两个核显示出一个双峰,暗示着该光源的复杂几何形状,而La€2,Ma时,一个2的伸长率和Si-2波段中的两个长度则显示了一个以三个为中心的紧凑结构。对埋没的AGN造成的误用进行了评估,评估了2至30个原子核的光谱能量分布(SED),并附加了附加的文学价值,并执行了SED +光谱适用于Nenkova等人(2008a,ApJ,685,145;?2008b,ApJ,685,160)和贝叶斯拟合方法的集总弯曲模型。该模型建议,在该球状星系中,由高亮度的一面粗略的星母所产生的误差是由该星系的1个星系所引起的。 ?€?1,约占系统整体亮度的40%。

相似文献

  • 外文文献
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号