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《Acta Astrophysica Sinica》 1997-01
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The Cosmological Constant and the Problem of the Age of the Universe

YUYun qiang1,3 MAEr1,2 CHENShi1 1(InstituteofTheoreticalPhysics,TheChineseAcademyofSciences) 2 (BeijingAstronomicalObservatory ,TheChineseAcademyofSciences) 3(DepartmentofPhysics,PekingUniversity)  
Wederivedarelationoftheaverageddensityofgalactichalotoitsformingtimeby sphericallysymmetric perturbationmodel,andestimatedtheformingtimetv ofour Galaxy .WhiletheagetGoftheGalaxyisrepresentedbytheageofglobularclustersinit, theageoftheUniverseshouldbetG+tv.ForflatuniversemodelswithΩλ=0 ,0 .7and 0 .8,wecalculatedtheHubbleconstantwhichcouldbesustained .Weshowedthatifthe Hubbleconstantisaslargeasabout 80km·s- 1·Mpc- 1,thepuzzleoftheageoftheUni versemightnotbesolvedbyintroducingthecosmologicalconstant.
【Fund】: 国家自然科学基金资助课题
【CateGory Index】: P159.3
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