搜索结果: 1-15 共查到“天文学 elliptical galaxies”相关记录16条 . 查询时间(0.322 秒)
Confronting feedback simulations with observations of hot gas in elliptical galaxies
X-ray elliptical galaxies hot gas galaxy evolution
2014/12/23
Elliptical galaxies comprise primarily old stars, which collectively generate a long-lasting feedback via stellar mass-loss and Type Ia SNe. This feedback can be traced by X-ray-emitting hot gas in an...
Stellar lifetime and ultraviolet properties of the old metal-rich Galactic open cluster NGC6791: a pathway to understand the UV upturn of elliptical galaxies
Stellar lifetime ultraviolet properties old metal-rich Galactic cluster NGC6791 UV upturn elliptical galaxies
2012/2/23
The evolutionary properties of the old metal-rich Galactic open cluster NGC6791 are assessed, based on deep UB photometry and 2Mass JK data. For 4739 stars in the cluster, bolometric luminosity and ef...
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
Elliptical galaxies Environmental Effects
2011/9/26
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...
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...
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...
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...
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 ...
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,...
Stellar populations in elliptical galaxies of compact groups
Stellar populations elliptical galaxies compact groups
2009/6/26
Stellar populations in elliptical galaxies of compact groups。
Two Scenarios for the Formation of Cuspy Density Profiles in Elliptical Galaxies
Cuspy Density Profiles Elliptical Galaxies
2009/6/25
Two Scenarios for the Formation of Cuspy Density Profiles in Elliptical Galaxies。
First Results of Metallicity Gradients in Elliptical Galaxies
Elliptical Galaxies Metallicity Gradients
2009/6/10
First Results of Metallicity Gradients in Elliptical Galaxies。
Stellar Populations in Galaxies：Progress on The Milky Way, on Dwarf Irregulars, and on Elliptical Galaxies
Stellar Populations Elliptical Galaxies The Milky Way
2009/6/5
Stellar Populations in Galaxies：Progress on The Milky Way, on Dwarf Irregulars, and on Elliptical Galaxies。
WHY THERE ARE NO ELLIPTICAL GALAXIES MORE FLATTENED THAN E7. THIRTY YEARS LATER
dark matter-Galaxies evolution-Galaxies formation-Galaxies halos-Galaxies structure
2009/2/18
WHY THERE ARE NO ELLIPTICAL GALAXIES MORE FLATTENED THAN E7. THIRTY YEARS LATER。
PHENOMENOLOGICAL APPROACH TO THE MODELLING OF ELLIPTICAL GALAXIES: THE PROBLEM OF THE MASS-TO-LIGHT RATIO
galaxies kinematics and dynamics-galaxies elliptical and lenticular-galaxies structure-dark matter-galaxies
2009/2/13
In this paper the problem of the phenomenological modelling of
elliptical galaxies using various available observational data is presented. Recently,
Tortora, Cardona and Piedipalumbo (2007) suggest...