搜索结果: 1-13 共查到“空间天文学 THE GALAXY”相关记录13条 . 查询时间(0.046 秒)
Extreme Warm Absorber variability in the Seyfert Galaxy Mrk 704
Galaxies: active – X-rays: galaxies – X-rays: individual: Mrk 704
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2011/9/28
In about half of Seyfert galaxies, the X-ray emission is absorbed by an optically thin, ionized medium, the so-called "Warm Absorber", whose origin and location is still a matter of debate. The aims o...
The radio core of the Ultraluminous Infrared Galaxy F00183-7111: watching the birth of a quasar
radio continuum: galaxies-galaxies: evolution-galaxies: ULIRG-galaxies: active-VLBI
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2011/10/12
F00183-7111 is one of the most extreme Ultra-Luminous Infrared Galaxies known. Here we present a VLBI image which shows that F00183-7111 is powered by a combination of a radio-loud Active Galactic Nuc...
Resolving the nuclear dust distribution of the Seyfert 2 galaxy NGC 3081
galaxies: active – galaxies: nuclei – galaxies: imaging – galaxies: indi-vidual
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2011/10/8
We report far-infrared (FIR) imaging of the Seyfert 2 galaxy NGC 3081 in the range 70-500 micron, obtained with an unprecedented angular resolution, using the Herschel Space Observatory instruments PA...
VII Zw 403: HI Structure in a Blue Compact Dwarf Galaxy
Structure Compact Dwarf Galaxy
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2011/9/30
We present optical (UBVJ), ultraviolet (FUV, NUV), and high resolution atomic hydrogen (HI) observations of the nearby blue compact dwarf (BCD), VII Zw 403. We find that VII Zw 403 has a relatively hi...
Fermi Large Area Telescope Observations of the Active Galaxy 4C +55.17: Steady, Hard Gamma-Ray Emission and its Implications
Steady Hard Gamma-Ray Emission Implications
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2011/9/29
We report Fermi/LAT observations and broad-band spectral modeling of the radio-loud active galaxy 4C +55.17 (z=0.896), formally classified as a flat-spectrum radio quasar. Using 19 months of all-sky s...
Host Galaxy Properties of the Swift BAT Ultra Hard X-ray Selected AGN
Galaxy Properties Swift Hard X-ray Selected AGN
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2011/9/29
We have assembled the largest sample of ultra hard X-ray selected (14-195 keV) AGN with host galaxy optical data to date, with 185 nearby (z<0.05), moderate luminosity AGN from the Swift BAT sample. T...
Completeness III: identifying characteristic systematics and evolution in galaxy redshift surveys
Cosmology: methods: data analysis – methods:redshift surveys – galaxies: large-scale structure of Universe
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2011/9/28
This paper continues our development of non-parametric tests for analysing the completeness in apparent magnitude of magnitude-redshift surveys. The purpose of this third and final paper in our comple...
The inverse-Compton ghost HDF 130 and the giant radio galaxy 6C 0905+3955: matching an analytic model for double radio source evolution
galaxies: individual: RGJ123617/HDF130, 6C0905+3955 – galaxies: evolution – galaxies: jets – radio continuum: galaxies – X-rays: galaxies.
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2011/9/28
We present new GMRT observations of HDF 130, an inverse-Compton (IC) ghost of a giant radio source that is no longer being powered by jets. We compare the properties of HDF 130 with the new and import...
Optical and near IR galaxy number counts in the GOYA survey. The ages of ellipticals
GOYA survey Optical IR galaxy
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2009/7/1
Optical and near IR galaxy number counts in the GOYA survey. The ages of ellipticals。
Mid-infrared sub-arcsecond spectroscopy of active galaxy nuclei
Mid-infrared spectroscopy active galaxy n
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2009/6/30
Mid-infrared sub-arcsecond spectroscopy of active galaxy nuclei。
Hot gas and the gaseous structure of the galaxy
HYDRODYNAMICS SUPERNOVAREMNANTS X-RAYS GALAXIES
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2009/6/4
A parochial review is presented concerning the status of our understandingof hot gas regions in the Galaxy and their implications for the overall distributionsof the Galaxy抯 gaseous components. We hav...
Hot gas in the galaxy：what do we know for sure?
GENERAL GALAXY BUBBLES ISM GENERAL X-RAYS
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2009/6/4
Major advances have been made in the past decade in our knowledge of the hotinterstellar gas of our Milky Way galaxy. The Di.use X-ray Spectrometer obtainedspectra in the 0.15?.28 keV range from the G...
Evolution of the Distribution of Neutron Exposures in the Galaxy Disc: An Analytical Model
Nucleosynthesis—neutron exposures—abundances—stars AGB stars low-mass stars—galaxy evolution
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2010/9/16
In this work, based on the analytical model with delayed production approximation developed by Pagel & Tautvaiˇsien˙e (1995) for the Galaxy, the analytic solutions of the distribution of neutron expos...