搜索结果: 1-14 共查到“天体物理学 Elliptical”相关记录14条 . 查询时间(0.015 秒)
X-ray properties expected from AGN feedback in elliptical galaxies
X-ray properties expected feedback elliptical galaxies
2011/10/11
The ISM evolution of elliptical galaxies experiencing feedback from accretion onto a central black hole was studied recently with high-resolution 1D hydrodynamical simulations including radiative heat...
The UV Upturn in Elliptical galaxies and Environmental Effects
galaxies elliptical and lenticular cD – galaxies:evolution – galaxies
2011/8/24
It is suspected that the ultraviolet (UV) upturn phenomenon in elliptical galaxies and extended horizontal-branch stars in globular clusters have a common origin. An extremely high abundance of helium...
Motions of stars in close binary systems with a conservative mass exchange are examined. It is shown that Paczynski-Huang model widely used now for obtaining the semi-major axis variation of a relativ...
Intrinsic Shapes of Very Flat Elliptical Galaxies
Intrinsic Shapes Flat Elliptical Galaxies
2011/1/11
Photometric data from the literature is combined with triaxial mass models to derive variation in the intrinsic shapes of the light distribution of elliptical galaxies NGC 720, 2768 and 3605. The infe...
A Census of Baryons and Dark Matter in an Isolated, Milky Way-sized Elliptical Galaxy
Baryons Dark Matter Milky Way-sized Elliptical Galaxy
2011/1/13
We present a study of the dark and luminous matter in the isolated elliptical galaxy NGC720, based on deep X-ray observations made with Chandra and Suzaku. The gas is reliably measured to ~R2500, allo...
A Very Close Binary Black Hole in a Giant Elliptical Galaxy 3C 66B and its Black Hole Merger
Black Hole Giant Elliptical Galaxy 3C 66B Black Hole Merger
2010/11/15
In recent years the possibility of measuring the temporal change of radial and transverse position of sources in the sky in real time have become conceivable thanks to the thoroughly improved techniqu...
The most recent burst of Star Formation in the Massive Elliptical Galaxy NGC 1052
galaxies individual NGC 1052 – galaxies interactions – galaxies nuclei –galaxies
2010/11/15
High-spatial resolution near-infrared (NIR) images of the central 2424 arcsec2(22 kpc2) of the elliptical galaxy NGC 1052 reveal a total of 25 compact sources randomly distributed in the region. Fi...
The similarity of observed X-ray coronae associated with L* disc and elliptical galaxies
galaxies:formation – galaxies haloes – galaxies cooling flows – galaxies intergalactic intergalactic
2010/11/12
The existence of hot, X-ray luminous gaseous coronae surrounding present day L? galaxies
is a generic prediction of galaxy formation theory in the cold dark matter cosmogony.
While extended X-ray em...
Non-axisymmetric oscillations of stratified coronal magnetic loops with elliptical cross-sections
magnetohydrodynamics(MHD) - plasmas - Sun corona - Sun oscillations - waves
2010/11/15
Aims. We study non-axisymmetric oscillations of a straight magnetic tube with an elliptic crosssection and density varying along the tube.
A SAURON study of dwarf elliptical galaxies in the Virgo Cluster
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/29
Dwarf elliptical galaxies are the most common galaxy type in nearby galaxy clusters, yet they remain relatively poorly studied objects and many of their basic properties have yet to be quantified. In ...
The PN.S Elliptical Galaxy Survey: a standard LCDM halo around NGC 4374?
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/27
As part of our current programme to test LCDM predictions for dark matter (DM) haloes using extended kinematical observations of early-type galaxies, we present a dynamical analysis of the bright elli...
Elliptical Weighted HOLICs for Weak Lensing Shear Measurement. part1:Definitions and isotropic PSF correction
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/23
We develop a new method to estimate gravitational shear by adopting an elliptical weight function to measure background galaxy images. In doing so, we introduce a new concept of "zero plane" which is ...
ELLIPTICAL GALAXIES: ROTATIONALLY DISTORTED, AFTER ALL
Galaxies: kinematics and dynamics Galaxies: elliptical and lenticular cD
2010/10/29
A possible interpretation of slow rotators as nonrotating at all and elongated due to negative anisotropy parameters, instead of flattened due to positive anisotropy parameters, is exploited. Finally,...
Herbig-Haro Jets from Sources in Elliptical Orbits。
