The effects of the vision on the central opacity and the positions of the curves invers for the brightness of the assumed elliptic sphere [PDF]
مجلة التربية والعلم, 2006 The seeing effects on spherical symmetric Elliptical galaxy type EO following the r1/4- model has been calculated by using two type of the point spread function the Gaussian and Moffat functions .
Saad Younis, Omer Salih
doaj +1 more source
Active Galactic Nucleus Feedback in an Elliptical Galaxy with the Most Updated AGN Physics. I. Low Angular Momentum Case [PDF]
, 2017 We investigate the effects of AGN feedback on the cosmological evolution of an isolated elliptical galaxy by performing two-dimensional high-resolution hydrodynamical numerical simulations. The inner boundary of the simulation is chosen so that the Bondi
F. Yuan +5 more
semanticscholar +1 more source
The orientation of elliptical galaxies [PDF]
Astrophysics and Space Science, 2010 We determine the orientations of the light distribution of individual elliptical galaxies by combining the profiles of photometric data from the literature with triaxial models. The orientation is given by a Bayesian probability distribution. The likelihood of obtaining the data from a model is a function of the parameters describing the intrinsic ...
D. K. Chakraborty, A. K. Diwakar
openaire +3 more sources
The Astrophysical Journal, 2022 Most stellar-dynamical determinations of the masses of nearby supermassive black holes (SMBHs) have been obtained with the orbit superposition technique under the assumption of axisymmetry.
Matthew E. Quenneville +2 more
doaj +1 more source
The rapid assembly of an elliptical galaxy of 400 billion solar masses at a redshift of 2.3 [PDF]
Nature, 2013 Stellar archaeology shows that massive elliptical galaxies formed rapidly about ten billion years ago with star-formation rates of above several hundred solar masses per year.
H. Fu +43 more
semanticscholar +1 more source
THE DRAGONFLY NEARBY GALAXIES SURVEY. II. ULTRA-DIFFUSE GALAXIES NEAR THE ELLIPTICAL GALAXY NGC 5485 [PDF]
, 2016 We present the unexpected discovery of four ultra-diffuse galaxies (UDGs) in a group environment. We recently identified seven extremely low surface brightness galaxies in the vicinity of the spiral galaxy M101, using data from the Dragonfly Telephoto ...
A. Merritt +6 more
semanticscholar +1 more source
Formation of Transitional cE/UCD Galaxies through Massive/Dwarf Disc Galaxy Mergers
Galaxies, 2023 The dynamics of the merger of a dwarf disc galaxy with a massive spiral galaxy of the Milky Way type were studied in detail. The remnant of such interaction after numerous crossings of the satellite through the disc of the main galaxy was a compact ...
Alexander V. Khoperskov +2 more
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Discovery of Ram-pressure Stripped Gas around an Elliptical Galaxy in Abell 2670 [PDF]
, 2017 Studies of cluster galaxies are increasingly finding galaxies with spectacular one-sided tails of gas and young stars, suggestive of intense ram-pressure stripping. These so-called “jellyfish” galaxies typically have late-type morphology.
Y. Sheen +9 more
semanticscholar +1 more source
High-resolution ALMA observations of SDP.81. I. The innermost mass profile of the lensing elliptical galaxy probed by 30 milli-arcsecond images [PDF]
, 2015 We report the detailed modeling of the mass profile of a z = 0.2999 massive elliptical galaxy using 30 milli-arcsecond resolution 1 mm Atacama Large Millimeter/submillimeter Array (ALMA) images of the galaxy–galaxy lensing system SDP.81.
Y. Tamura +5 more
semanticscholar +1 more source
The Astrophysical Journal Letters, 2023 Gravitational lensing provides unique insights into astrophysics and cosmology, including the determination of galaxy mass profiles and constraining cosmological parameters.
Aleksandar Cikota +12 more
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