Supernova Remnants in the AKARI IRC Survey of the Large Magellanic Cloud

Publications of the Astronomical Society of Japan

Kaneda, Hidehiro⁷  Onaka, Takashi⁶  Lee, Myung Gyoon³  Ita, Yoshifusa²  Lee, Ho-Gyu³  Lee, Hyung Mok³  Seok, Ji Yeon³  Koo, Bon-Chul³  Moon, Dae-Sik¹  Kim, Sung Eun⁵  Lee, Jae-Joon⁴  Sakon, Itsuki⁶ 

[1] Department of Astronomy and Astrophysics, University of Toronto, Toronto, ON M5S 3H4, Canada;National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588Department of Physics and Astronomy, Seoul National University, Seoul 151-742, Korea ; ; ; ;;Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802, USA;Department of Astronomy and Space Science, Sejong University, Seoul 143-747, KoreaDepartment of Astronomy, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033 ;;Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 229-8510

关键词: "dust;    extinction";    "ISM: individual objects (0509-67.5;    0519-69.0;    N 132 D;    N 49 B;    N 49;    SN 1987A;    N 157 B;    0548-70.4)";    "Magellanic Clouds";    "supernova remnants";   

DOI  :  10.1093/pasj/60.sp2.S453

学科分类：天文学(综合)

来源: Oxford University Press

【 摘 要 】

Wepresentanear-tomid-infaredstudyofsupernovaremnants(SNRs)usingtheAKARIIRCSurveyoftheLargeMagellanicCloud(LMC).TheLMCsurveyobservedabouta10squaredegreeareaoftheLMCinfivebandscenteredat3,7,11,15,and24$$mu$$musingtheInfraredCamera(IRC)aboardAKARI.ThenumberofSNRsinthesurveyareais21,whichisaboutahalfoftheknownLMCSNRs.WesystematicallyexaminedAKARIimagesandidentifiedeightSNRswithdistinguishableinfraredemission.Allofthemweredetectedat$$gtrsim$$10$$mu$$mandsomeat3and7$$mu$$m,too.WepresenttheirAKARIimagesandfluxes.Inthe11$$/$$15$$mu$$mversus15$$/$$24$$mu$$mcolor-colordiagram,theSNRsappeartobealignedalongamodifiedblackbodycurve,representingthermalemissionfromdustattemperaturesofbetween90and190K.Thereisagoodcorrelationbetweenthe24$$mu$$mandX-rayfluxesoftheSNRs.Itwasalsofoundthatthereisagoodcorrelationbetweenthe24$$mu$$mandradiofluxesevenifthereisnodirectphysicalconnectionbetweenthem.Weconsideredtheoriginofthedetectedmid-infraredemissioninindividualSNRs.Weconcludethatthemid-infraredemissionsinfiveSNRsthatshowmorphologiessimilartotheX-raysaredominatedbythermalemissionfromhotdustheatedbyX-rayemittingplasma.Their15$$/$$24$$mu$$mcolortemperaturesaregenerallyhigherthantheSpitzer24$$/$$70$$mu$$mcolortemperatures,whichsuggeststhatasingle-temperaturedustmodelcannotdescribethefullspectralenergydistribution(SED)oftheSNRs.ItalsoimpliesthatourunderstandingofthefullSEDisessentialforestimatingthedustdestructionrateofgrainsbySNRshocks.

【 授权许可】

Unknown