The Virgo High-Resolution CO Survey: II. Rotation Curves and Dynamical Mass Distributions

Sofue Yoshiaki; Koda Jin; Nakanishi Hiroyuki; Onodera Sachiko

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The Virgo High-Resolution CO Survey: II. Rotation Curves and Dynamical Mass Distributions

机译：处女座高分辨率二氧化碳调查：II。旋转曲线和动态质量分布

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Basedonahigh-resolutionCOsurveyofVirgospiralswiththeNobeyamaMillimeter-waveArray,wedeterminedthedynamicalcentersusingvelocityfields,andderivedpositiona€“velocitydiagrams(PVDs)alongthemajoraxesofthegalaxiesacrosstheirdynamicalcenters.Weappliedanewiterationmethodtoderiverotationcurves(RCs),whichreproducetheobservedPVDs.Theobtainedhigh-accuracyRCsgenerallyshowasteepriseinthecentral$$sim100$$to200a€‰pcregions,followedbyflatrotationinthedisk.Weappliedadeconvolutionmethodtocalculatethesurface-massdensity(SMD)usingtheRCsbasedontwoextremeassumptionsthatthemassdistributioniseithersphericalorthin-diskshaped.Bothassumptionsgivenearlyidenticalresults,agreeingwitheachotherwithinafactoroftwoatanyradii.TheSMDdistributionsrevealedcentralmassivecoreswithpeakSMDof$$sim10^4hbox{--}10^5,{{{M}_{odot}}},mathrm{pc}^{-2}$$andatotalmasswithin200a€‰pcradiusoftheorderof$$sim10^9,{{{M}_{odot}}}$$.AcorrelationanalysisamongthederivedparametersshowsthatthecentralCO-lineintensityispositivelycorrelatedwiththecentralSMD,whichsuggeststhatthedeeperisthegravitationalpotential,thehigheristhemoleculargasconcentrationinthenuclei,regardlessofthemorphologicaltypes.

机译：Basedonahigh-resolutionCOsurveyofVirgospiralswiththeNobeyamaMillimeter-waveArray，wedeterminedthedynamicalcentersusingvelocityfields，andderivedpositiona€“velocitydiagrams（PVDS）alongthemajoraxesofthegalaxiesacrosstheirdynamicalcenters.Weappliedanewiterationmethodtoderiverotationcurves（RCS），whichreproducetheobservedPVDs.Theobtainedhigh-accuracyRCsgenerallyshowasteepriseinthecentral $$ SIM100 $$ to200a€‰pcregions，followedbyflatrotationinthedisk.Weappliedadeconvolutionmethodtocalculatethesurface-massdensity（SMD）usingtheRCsbasedontwoextremeassumptionsthatthemassdistributioniseithersphericalorthin-diskshaped.Bothassumptionsgivenearlyidenticalresults ，彼此同意，但有两个半径的因素。SMD分布显示了具有$ Simof $$ sim10 ^ 4hbox {-} 10 ^ 5，{{{M} _ {odot}}}，mathrm {pc} ^ {-2} $ and的总质量核，阶数为20的sim $ 10。 {{{M} _ {odot}}} $$。派生参数之间的相关分析显示，中心CO线强度与中心SM正相关D，这暗示着较深的引力势能，无论形态类型如何，核中较高的分子气体浓度。

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《PASJ: Publications of the Astronomical Society of Japan》 |2003年第1期|共页
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Sofue Yoshiaki; Koda Jin; Nakanishi Hiroyuki; Onodera Sachiko;
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1. The Virgo High-Resolution CO Survey: II. Rotation Curves and Dynamical Mass Distributions [J] . Sofue Yoshiaki, Koda Jin, Nakanishi Hiroyuki, PASJ: Publications of the Astronomical Society of Japan . 2003,第1期

机译：处女座高分辨率二氧化碳调查：II。旋转曲线和动态质量分布
2. High-Resolution Rotation Curves of Low Surface Brightness Galaxies. II. Mass Models [J] . W. J. G. de Blok14, Stacy S. McGaugh2, Vera C. Rubin3 The Astrophysical journal . 2007,第5期

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3. The Virgo high-resolution CO survey: v1. gas dynamics and star formation along the bar in NGC 4303 [J] . Koda J, Sofue Y PASJ: Publications of the Astronomical Society of Japan . 2006,第2期

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4. Rotation curve and dynamical mass in the inner region of M100 with ALMA [C] . Azeez Jazeel H., Abidin Z.Z., Ibrahim Z.A., 2015 International Conference on Space Science and Communication : Space Technology for Humanity . 2015

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7. The Virgo High-Resolution CO Survey: II. Rotation Curves and Dynamical Mass Distributions [O] . Yoshiaki Sofue, Jin Koda, Hiroyuki Nakanishi, 2003

机译：处女座高分辨率CO调查：II。旋转曲线和动态质量分布

The Virgo High-Resolution CO Survey: II. Rotation Curves and Dynamical Mass Distributions

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