Quantitative morphology of galaxies in the hubble deep field
作者： Francine R. Marleau , Luc Simard
DOI: 10.1086/306356
关键词: Astronomy 、 Lenticular galaxy 、 Disc 、 Brightest cluster galaxy 、 Luminous infrared galaxy 、 Astrophysics 、 Physics 、 Peculiar galaxy 、 Surface brightness fluctuation 、 Galaxy group 、 Elliptical galaxy
摘要: We measure quantitative structural parameters of galaxies in the Hubble deep field (HDF) on drizzled F814W images. Our are based a two-component surface brightness made up Sersic profile and an exponential profile. compare our results to visual classification van den Bergh et al. C-A Abraham morphological analysis HDF indicates that spheroidal galaxies, defined here as with dominant bulge profile, make for only small fraction, namely, 8%, galaxy population down mF814W(AB) = 26.0. show larger fraction early-type systems sample is primarily due difference 40% round half-light radii less than 031. Although these objects visually classified elliptical we find they disk dominated fractions 0.5. Given existing large data set measured spectroscopic redshifts, able determine majority distant (z > 2) from this dominated. reveals subset have profiles flatter pure
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