Results 91 to 100 of about 5,149 (236)
Causal Discovery in Astrophysics: Unraveling Supermassive Black Hole and Galaxy Coevolution
The Astrophysical JournalCorrelation does not imply causation, but patterns of statistical association between variables can be exploited to infer a causal structure (even with purely observational data) with the burgeoning field of causal discovery.
Zehao Jin +11 more
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Disks Controlling Chaos in a 3D Dynamical Model for Elliptical Galaxies
Open Astronomy, 2011 A 3D dynamical model with a quasi-homogeneous core and a disk component is used for the chaos control in the central parts of elliptical galaxy.
Zotos Euaggelos E.
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The Outer Halos of Elliptical Galaxies [PDF]
, 2010 Recent progress is summarized on the determination of the density distributions of stars and dark matter, stellar kinematics, and stellar population properties, in the extended, low surface brightness halo regions of elliptical galaxies. With integral field absorption spectroscopy and with planetary nebulae as tracers, velocity dispersion and rotation ...
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The Astrophysical Journal, 1983 We propose that dwarf elliptical galaxies are the bound remnants of more massive stellar systems, such as a parent galaxy which has lost more than half its mass in gas ejection during a burst of star formation, or an unbound tidal debris produced during the interaction of two giant galaxies.
P. Carnevali, H. Gerola, E. E. Salpeter
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Scaling Relations of Early-Type Galaxies in MOND
GalaxiesWe investigate the shape and morphology of early-type galaxies (ETGs) within the framework of Modified Newtonian Dynamics (MOND). Building on our previous studies, which demonstrated that the monolithic collapse of primordial gas clouds in MOND produces ...
Robin Eappen, Pavel Kroupa
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Relativistic jets in narrow-line Seyfert 1 galaxies. New discoveries and open questions
EPJ Web of Conferences, 2013 Before the launch of the Fermi satellite only two classes of AGNs were known to produce relativistic jets and thus emit up to the γ-ray energy range: blazars and radio galaxies, both hosted in giant elliptical galaxies.
D’Ammando F. +4 more
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The Baryonic Halos of Isolated Elliptical Galaxies
Galaxies, 2017 Without the interference of a number of events, galaxies may suffer in crowded environments (e.g., stripping, harassment, strangulation); isolated elliptical galaxies provide a control sample for the study of galaxy formation.
Ricardo Salinas +5 more
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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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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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A 5-GHz survey of bright Southern elliptical and S0 galaxies [PDF]
, 1977 M. J. Disney, J. V. Wall
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