The estimates of the age of the dominant population in M32 range from 3 to 5 Gyr and depend not only on the model but also on the SED of this galaxy used in the fits. The same models predict an age of 11 to 13 Gyr for the stars in a typical old E/S0 galaxy. A 1 to 2 Gyr...
Our results show that star formation histories with a much more gradual rise in the star formation rate are likely to be better templates, and are likely to give better overall estimates of the age distribution and star formation rate distribution of Lyman break galaxies. For B- and V-...
Parkinson’s disease (PD) is the second most common neurodegenerative disease following Alzheimer’s disease, affecting approximately 3% of the population over 65 years of age1. Although PD is defined primarily as a movement disorder (i.e. resting tremor, rigidity, bradykinesia), it is a heterog...
analyze and decipher [1]. The main characteristic feature of the human being is the face which exhibits different emotions that can be determined and easily predicted by several facial expressions [2]. Just by glancing at the face of a person, one can estimate the age and gender ...
The Age of the Universe and the Cosmological Constant Determined from Cosmic Microwave Background Anisotropy Measurements If Omega_tot = 1 and structure formed from adiabatic initial conditions then the age of the Universe, as constrained by measurements of the cosmic microwav... L Knox,N Christens...
We propose a technique for estimation of the mass m of the young stellar population and the starburst age T in luminous compact galaxies (LCGs). For this purpose we use LCG H alpha emission line luminosities from the Sloan Digital Sky Survey (SDSS) spectra and Galaxy Evolution Explorer (...
A method for estimating the dynamical age of FRII-type radio sources from multi-frequency data Context.Determining the ages of powerful radio sources is crucial for understanding galaxy evolution, the activity cycle of galactic nuclei, and their infl... J Machalski,K. T. Chyy,Stawarz,... ...
TheAreciboSurveyofNorthernDwarfandLowSurfaceBrightnessGalaxies(Schneider,Thuan,Magri&Wadiak1990)andTheCatalogofLowSurfaceBrightnessGalaxy,ListII(Schombert,Bothun,Schneider&McGaugh1992).Thegoalsare(1)toevaluatetheadditionstothecompletenessoftheFisherandTully(1981a)10MpcSampleand(2)toestimatewhetherthedensityof...
a r X i v : 0 8 0 9 . 0 6 1 5 v 1 [ a s t r o - p h ] 3 S e p 2 0 0 8 Mon.Not.R.Astron.Soc.000,000–000(0000)Printed3September2008(MNL A T E Xstylefilev2.2) EstimationoftheTiltoftheStellarVelocityEllipsoidfrom RAVEandImplicationsforMassModels A.Siebert 1,2...
whichcouldleadtotheformationofanexoticobjectsuchasaverymassiveblackhole. Theimportantparameterofmasssegregationisitstimescale.Inordertoexplainanobserva- tionintermsofmasssegregation,thetimescalehastobelessthantheageofthestarcluster. However,masssegregationhasbeenstudiedonlyforspecificcasesusingnumericalmethods, i...