نتایج جستجو برای: ellipticity

تعداد نتایج: 1777  

2009
B. P. Holden M. Franx G. D. Illingworth M. Postman A. van der Wel D. D. Kelson J. P. Blakeslee H. Ford R. Demarco S. Mei

We have compiled a sample of early-type cluster galaxies from 0 < z < 1.3 and measured the evolution of their ellipticity distributions. Our sample contains 487 galaxies in 17 z > 0.3 clusters with high quality space-based imaging and a comparable sample of 210 galaxies in 10 clusters at z < 0.05. We select early-type galaxies (elliptical and S0 galaxies) that fall within the cluster R200, and ...

Journal: :Journal of the Physical Society of Japan 2022

Electron excitation in dielectrics is studied for an elliptically polarized laser field. As the first step, we develop analytical formula electron rate under as extension of our previous work [Otobe et al., J. Phys. Soc. Jpn. 88, 024709 (2019)]. In next calculate depending on band structure by assuming direction dependence reduced mass. We find that although ellipticity decreases significantly ...

2002
David R. Andersen Matthew A. Bershady

We have measured the distribution of intrinsic ellipticities for a sample of 28 relatively face–on spiral disks. We combine Hα velocity fields and R and I-band images to determine differences between kinematic and photometric inclination and position angles, from which we estimate intrinsic ellipticities of galaxy disks. Our findings suggest disks have a lognormal distribution of ellipticities ...

Journal: :Kyoto Journal of Mathematics 1999

Journal: :Geophysical Journal International 1996

Journal: :Algebraic & Geometric Topology 2015

Journal: :Journal of Functional Analysis 1997

Journal: :Geophysical Journal International 1937

Journal: :Journal of Physics of the Earth 1987

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