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1.
1 IntroductionAnextralargeTypeⅣmicrowaveburstwasobservedwithPhoenixⅡMicrowaveSpec trometer ( 4 0 0GHz ,2 84GHzand 1 42GHz)atYunnanObservatoryfrom 0 8h31 mto 0 9h41 mUTonDecember 1 6 ,1 988.Inthemorethan 70minutes ,fiveintensivemainpeaksweregener atedontheType Ⅳμburstonthreewa…  相似文献   

2.
OnJulyof1 998,NanjingAstronomicalInstrumentResearchCenter (NAIRC)ofChineseA cademyofSciences,hasprovidedaUniversalBirefringentFilter (UBF)toTokyoMeiseiUniver sitythroughNikonCorporationofJapan .1 Opticalscheme (Fig 1 )TheUBFiscomposedofsixtunableLyotelementsL1 L6,…  相似文献   

3.
1 IntroductionDuringtheROSATAll-SkySurvey (RASS)about 80 ,0 0 0X -raysourceswithadetectionlikelihood≥ 1 0werefound (Vogesetal.1 996 ) ,fromwhich 1 8,81 1sourceswerecompiledintheROSATBrightSourceCatalogue (RASS -BSC) (Vogesetal.1 996 ;) .OfRASSsourcesmorethan 6 5 %oftheobjectswerepre…  相似文献   

4.
1 ObservationalvelocityfieldWeanalyseHβspectraobtainedatYunnanObservatorywiththetwo dimensionMulti Wave bandSpectra SpectroHelioGraph (MW SSHG) (XuanandLin 1 993) .ThePFLsappearedat0 1 :0 4UTofAugust 1 7,1 989onthewesternsolarlimbabovethelargeactiveregion (AR 5 6 2 9,S1 5°;W 1 …  相似文献   

5.
StarPhysicsProgressintheStudyofAbundancesofHeavyElementsinMetal-PoorStarsZHOUGui-de ( 4) . 7……………………………………………………………………SolarPhysics RadioAstronomyTheDynamicalFeatureofFilamentsinAR750 0JIANGYun -chun ,LUANDi ( 1 ) . 1 8………SolarRadioMetricWaveEventsFromActiveRegion 653 8…  相似文献   

6.
1 IntroductionUltraluminousfar infrared (UFIR) galaxiesareoneoftheimportantdiscoveriesmadebyI RAS .Theluminositiesofthesegalaxies,>1 0 12 L⊙ ,are 2to 3ordersofmagnitudehigherthanthoseofmostofspiralgalaxies,totheluminositydomainofquasars .Thesourceofenergyforsuchg…  相似文献   

7.
BIRACisacooperationprojectbetweenBeijingAstronomicalObservatoryofChinaandNa tionalAstronomicalObservatoryofJapan .A 5 1 2× 5 1 2PtSiarrayisemployedinBIRAC .ACOGITOcontrollerdevelopdebyDr.Ueno’sgroupinTokyoUniversityisusednow .Now ,itisasimplecameraonly ,withoutc…  相似文献   

8.
1 IntroductionTheHipparcoscatalogue (ESA 1 997) ,whichsuppliesunprecedentedlyaccuratepropermo tiondata (inertiality~± 0 2 5mas/ yr,randomerror~± 1mas/ yr)foralargenumberofstars,invitesattemptstore examinegalacticinteriormotions ,andenablesustoperformakinematicanalys…  相似文献   

9.
1 IntroductionTworeceiversystemhavebeenusedatTRAO (TaedukRadioAstronomyObservatory) .OneisSIS (SuperconductorInsulatorSuperconductor)receiverof 1 0 0GHzbandwiththefre quencyrangesof 85 1 1 5GHz〔1〕.TheotherisSchottkyreceiverof 1 5 0GHzbandwiththefre quencyrangesof 1 2 5 …  相似文献   

10.
1 IntroductionIRAS 0 331 3 6 0 5 8wasclassifiedasacandidateextremecarbonstarbasedonthesimilarityofitsIRASLRSspectrumtothoseofAFGL 30 6 8andIRC 1 0 2 1 6 (Volketal.1 992 ) .IthasnoopticalcounterpartinthePOSSplates (Jiang&Hu 1 992 ) .Inthenearinfrared ,thesourcewasdetectedatK =1 5 6…  相似文献   

11.
1 IntroductionTheDepartmentofAstronomyatSeoulNationalUniversityiscarryingoutaprojecttobuildaradioobservatory ,theSeoulRadioAstronomicalObservatory (SRAO) .Theobservatorywilloperatea 6 mmillimeter wavetelescope .TheantennaisidenticaltothoseoftheBIMA (Berke le…  相似文献   

12.
Fisrt,welisttheinstrumentssofardeveloped ,beingreadyandtobeplanned ;PSPⅠPASPⅡPSP 0NewPSP planned“PASPⅢ”detectors 1 5InSb Si 32InSb 2 0 48Si 1 6InGaAs 1 6Silicon 1 6InSbcoverage 0 .9~ 2 .5 1 .4~ 4.2 0 .35~ 1 .0 0 .9~ 1 .5 5 0 .35~ 2 .5 μmresolution(R) 0 .1 (~ 2 0 ) 0 .1 (~ 40 ) ( 40 0~ 70 ) 0 .0 5 (~ 2 5 ) 0 .0 4(~ 2 0 ) μmamp…  相似文献   

13.
1 ObservationsandDataProcessing1 1 RadioObservationsAparticularradiomicroflarewasobservedduring 0 6 4 5~ 0 72 0UTonJanuary 5 ,1 994bytheYunnanObservatoryhightimeresolutionsolarradiotelescope .Itoccurredat 1 42GHzdur ingasmall4S/Ftypeburst.Theobservationwasalsomadebyth…  相似文献   

14.
1 IntroductionTheWUMa typecontactbinaryV1 0 73CygwasfirstreportedasavariablebyStrohmeier( 1 96 0 )anditsphotographiclightcurveandphotographictimesofminimumlightduring 1 930~1 939and 1 95 3~ 1 95 9werepublished (Strohmeieretal.1 96 2 ) .SpectroscopicobservationsofV1 0 73Cygweremade…  相似文献   

15.
《天文研究与技术》2001,313(2):74-80
一、发表论文1、 SCI (科学引文索引 )类论文1 ) 一个日珥D3线的特征和计算 =CalculationsandphysicalpropertiesoftheD3emissionlinesofapromi nence .李可军 ,顾啸马 ,陈学昆 .MNRAS,2 0 0 0 ,Vol.31 3,761 - 766.2 ) 两个相接双星TZBoo和YSex的轨道周期研究 =OrbitalperiodStudiesofthetwocontactbinariesTZBootisandYSextantis .钱声邦 ,刘清耀 .A&A ,2 0 0 0 ,Vol.…  相似文献   

16.
Ourmeterwavesolarradioacousto -opticalspectrograph(AOS)tracesbacktotheyear 1 979whenitwasbeingbuilt.TheAOScoversaworkingfrequencyrangeof 2 30~ 30 0MHz .Ithasthemeritsofhighspectralresolutionandgoodsensitivity .Thespectralresolution( 0 2 5MHz)de pendsonthecharacteris…  相似文献   

17.
1 IntroductionSirius (α2 0 0 0 =6 h45 m2 ,δ2 0 0 0 =- 1 6°41′) ,thebrighteststarinthesky ,isadoublestarsystemwithlargemagnitudedifferencebetweenthetwocomponents (V =- 1 5 8forthebrighterstarand 8 44forthesecondary) .Thisyieldsvisualobservationstobemadeonlywhentheseparationsarela…  相似文献   

18.
1 IntroductionTheNarrowLineSeyfert 1Galaxies (NLSI ,Osterbrock&Pogge 1 985 )areapeculiarsub classofactivegalacticnuclei (AGNs) ,thedescriptivecriteria (Goodrich 1 989)usedtodefineNLS1are :( 1 )theBalmerlinesareonlyslightlybroaderthantheforbiddenlinessuchas〔OⅢ〕 ,〔NⅡ〕 ,and…  相似文献   

19.
IntroductionCometHale Bopp(Hale,1 995 )isanextremelybrightcomet.Ithasbeenactivewhendiscov eryat 7AUfromtheSun(Sekanina ,1 996 ) .Thelocalizedejectionofdustandgasproducedcom plexcomastructurethatcanbeusedtostudytheejectionspeedandnucleusrotationperiod .Fur thermore…  相似文献   

20.
Since 1 991 ,NanjingAstronomicalInstrumentResearchCenterhasprovidedofalotofLyotfilters,physicalopticaldevices,heliostatsandcoelostatssolarexhibitioninstrumentsfortheob servatoriesandinstitutesoutsidetheChinacontinent,asJapan ,Korea,IndiaandTaiwan .Allofthese…  相似文献   

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