搜索结果: 1-11 共查到“知识库 天体物理学 nuclear”相关记录11条 . 查询时间(0.062 秒)
Extending the M_(bh)-sigma diagram with dense nuclear star clusters
Extending the M_(bh)-sigma diagram dense nuclear star clusters
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2012/2/21
Abridged: Four new nuclear star cluster masses, M_nc, plus seven upper limits, are provided for galaxies with previously determined black hole masses, M_bh. Together with a sample of 64 galaxies with ...
Influence of nuclear de-excitation on observables relevant for space exploration
nuclear de-excitation observables relevant
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2011/1/13
The composition of the space radiation environment inside spacecrafts is modified by the interaction with shielding material, with equipment and even with the astronauts' bodies. Accurate quantitativ...
The orientation of the nuclear obscurer of the AGNs
galaxies statistics — galaxies Seyfert — galaxies nuclei — galaxies spiral
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2010/11/15
We examine the distribution of axis ratios of a large sample of disk galaxies hosting type 2 AGNs selected from the Sloan Digital Sky Survey and compare it with a well-defined control sample of non-ac...
Spin and spin-isospin instabilities in asymmetric nuclear matter at zero and finite temperatures using Skyrme functionals
Spin spin-isospin instabilities asymmetric nuclear matter at zero finite temperatures
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2010/11/16
Self-consistent mean field methods based on phenomenological Skyrme effective interactions are
known to exhibit spurious spin and spin-isospin instabilities both at zero and finite temperatures when ...
The nature of nuclear Halpha emission in LINERs
Galaxies:active Galaxies:nuclei Galaxies evolution X-ray:galaxies
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2010/11/10
To get insight in the nature of the ionized gas in the nuclear region of LINERs we have performed a study of HST Hα imaging of 32 LINERs. The main conclusion from this analysis is that for the large m...
Astronomy with Radioactivities: Chapter 9, Nuclear Reactions
Astronomy Radioactivities Nuclear Reactions
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2010/11/10
Nuclear reaction rates determine the abundances of isotopes in stellar burning processes.A multitude of reactions determine the reaction flow pattern which is described in terms of reaction network si...
Comparison of AGN and Nuclear Starburst Activity in Seyfert 1 and 2 Galaxies over a Wide Luminosity Range Based on Near-infrared 2-4 micrometer Spectroscopy
Galaxy Astrophysics (astro-ph.GA)
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2011/1/4
We present near-infrared K- (1.9-2.5 micrometer) and L- (2.8-4.2 micrometer) band spectroscopy of 22 Seyfert nuclei. We use two methods to investigate the presence of nuclear starbursts.
Dense Molecular Gas Excitation in Nuclear Starbursts at High Redshift: HCN, HNC, and HCO+(J=6-5) Emission in the z=3.91 Quasar Host of APM08279+5255
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
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2010/12/29
We report the detection of surprisingly strong HCN, HNC, and HCO+(J=6-5) emission in the host galaxy of the z=3.91 quasar APM08279+5255 through observations with CARMA. HCN, HNC, and HCO+ are typicall...
Measurements of stellar and explosive nuclear astrophysics reactions
transfer reaction indirect measurement astrophysical s-factor reaction rate
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2009/8/14
This paper described the nuclear astrophysical studies using the unstable ion beam facility GIRAFFE in CIAE, by indirect measurements. We measured the angular distributions for some single proton or ...
Spectral Classification and Analysis of Nuclear Activity in the UZC-Compact Group Sample
Spectral Classification UZC-Compact Group Sample Nuclear Activity
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2009/7/9
Spectral Classification and Analysis of Nuclear Activity in the UZC-Compact Group Sample。
Studies in Nuclear Astrophysics Using Radioactive Beams at the HRIBF
Nuclear Astrophysics Radioactive Beams the HRIBF
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2010/10/22
The availability of radioactive beams has produced great opportunities for advances in our understanding of the nucleosynthesis occurring in stellar explosions such as novae, X-ray bursts, and superno...