Results 161 to 170 of about 618,301 (285)
Astronomical Signatures of Dark Matter
Advances in High Energy Physics, 2014 Several independent astronomical observations in different wavelength bands reveal the existence of much larger quantities of matter than what we would deduce from assuming a solar mass to light ratio. They are very high velocities of individual galaxies
Paul Gorenstein, Wallace Tucker
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Structure and Kinematics of Star-forming Elliptical Galaxies in SDSS-MaNGA
The Astrophysical JournalUsing “spatially” resolved spectroscopy, we investigated the characteristics and different modes of formation of stars in elliptical galaxies. We identified an unusual population of 59 star-forming elliptical (SF-E) galaxies in SDSS-MaNGA, our primary ...
Pralay Biswas, Yogesh Wadadekar
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The Fundamental Plane of Galaxy Group Mergers [PDF]
arXiv, 2012 We present a series of hundreds of collisionless simulations of galaxy group mergers. These simulations are designed to test whether the properties of elliptical galaxies - including the key fundamental plane scaling relation, morphology and kinematics - can be simultaneously reproduced by dry multiple mergers in galaxy groups.
arxiv
Modified Newtonian Dynamics: A Falsification of Cold Dark Matter
Advances in Astronomy, 2009 The only viable alternative to dark matter is one in which Newtonian dynamics or gravity breaks down in the limit of low accelerations, as in modified Newtonian dynamics (MONDs).
R. H. Sanders
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Cold Gas and Star Formation in Elliptical Galaxies [PDF]
arXiv, 1998 Elliptical galaxies outside dense clusters are observed to contain small amounts (relative to spiral galaxies) of cold interstellar gas. This review discusses the atomic gas, the molecular gas, and the dust in elliptical galaxies. Field elliptical galaxies contain about 0.01 to 0.1 of the cold interstellar matter content of spiral galaxies of similar ...
arxiv
A search for close dwarf companions of elliptical galaxies [PDF]
, 1977 G. D. Bothun, III Sullivan W. T.
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The Evolution of the Integrated Colors of Globular Clusters and Elliptical Galaxies [PDF]
, 1978 Robin Ciardullo, P. Demarque
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, 2002 Neutral hydrogen is an important component of the interstellar medium in elliptical galaxies as well as a potentially valuable mass tracer. Until recently, HI surveys of early-type galaxies have been sparse and inhomogeneous but this has changed with the advent of the HI Parkes All-Sky Survey (HIPASS; Barnes et al. 2001). We discuss HIPASS observations
Sadler, Elaine M. +2 more
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Iraqi Journal of PhysicsUnderstanding the CNO cycle and the proton-proton (p-p) chain is essential for comprehending the development of main sequence stars in the initial stages of spiral and elliptical galaxy formation. This study investigates two nuclear reactions that occur
Rabab Muzhir J., Al Najm M. N.
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Structural and Morphological Properties of Ultraluminous Infrared Galaxies at 1 < z < 3
Open Astronomy, 2015 Using the Hubble Space Telescope (HST)/Wide Field Camera 3 (WFC3) near-infrared high-resolution imaging from the 3D-HST survey, we analyze the morphology and structure of 502 ultraluminous infrared galaxies (ULIRGs; LIR > 1012L⊙) at 1 < z < 3. Their rest-
Fang Guanwen +3 more
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