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A Relic Star Cluster in the Sextans Dwarf Spheroidal Galaxy - Implications for Early Star and Galaxy Formation
Relic Star Cluster the Sextans Dwarf Spheroidal Galaxy Implications Galaxy Formation
2012/2/23
We present tentative evidence for the existence of a dissolved star cluster in the Sextans dwarf spheroidal galaxy. In a sample of six stars, we identify three (possibly four) stars around [Fe/H] =-2....
第二届“Five-Star金融论坛”圆满成功（图）
第二届“Five-Star金融论坛”
2011/12/4
5月23日，由中国人民大学汉青经济与金融高级研究院、财政金融学院联合主办的“Five- Star金融论坛”在明德楼830召开。来自中国人民大学、北京大学、长江商学院、清华大学、中央财经大学等多所教学科研单位的学者们共聚一堂，就国际前 沿的金融研究问题展开深入交流。
由中国人民大学、北京大学、长江商学院、清华大学、中央财经大学共同发起，中国人民大学汉青经济与金融高级研究院、中国人民大学财政金融学院联合主办的第三届“Five Star•金融论坛”于2010年6月28日在中国人民大学圆满落下帷幕。本次论坛主席由华盛顿大学圣路易斯分校刘蕻副教授担任。来自五所发起院校以及上海、香港、澳门和美国高校的众多学者共聚一堂，展示成果，分享心得，共论金融学前沿问题。
目的：观察老年人睾丸间质细胞结构以及类固醇激素合成快速调节蛋白（steroidogenic acute regulatory protein，StAR）和胆固醇侧链裂解酶（cholesterol-side-chain cleavage enzyme，P450scc）蛋白表达的变化，以探讨迟发性性腺功能减退症的机制。方法：青年人（20~30岁）及老年人（70~90岁）睾丸标本各10例，对患者进行AM...
SN 2008jb: A "Lost" Core-Collapse Supernova in a Star-Forming Dwarf Galaxy at ~10 Mpc
SN 2008jb Core-Collapse Supernova Star-Forming Dwarf Galaxy
2011/10/19
We present the discovery and follow-up observations of SN 2008jb, a core-collapse supernova in the dwarf irregular galaxy ESO 302-14 at 9.6 Mpc. This transient was missed by galaxy-targeted surveys an...
Oscillations of relativistic axisymmetric tori and implications for modelling kHz-QPOs in neutron-star X-ray binaries
X-rays: binaries – relativity – stars: neutron
2011/10/8
We perform a global linear perturbative analysis, and investigate the oscillation properties of relativistic, non-selfgravitating tori orbiting around neutron stars in the slow rotation limit approxim...
Runoff of Escherichia coli (E. coli) and other fecal indicator bacteria from grazing lands has been identified as a significant source of bacterial contamination in need of reductions to improve water...
A Mid-Infrared Indicator for Total Infrared Luminosity and Star Formation Rate of Local and High-Redshift Galaxies
Indicator Total Infrared Luminosity High-Redshift Galaxies
2011/10/9
We present a new method to use 24 micron observations to estimate the total infrared luminosity, LIR, and the star formation rate of star-forming galaxies across the redshift range 0 < z < 3. This is ...
Evolution of star clusters in arbitrary tidal fields
globular clusters: general – open clusters and associations: general – galaxies: star clusters – methods: analytical – methods: numerical
2011/10/20
We present a novel and flexible tensor approach to computing the effect of a time-dependent tidal field acting on a stellar system. The tidal forces are recovered from the tensor by polynomial interpo...
Enriched haloes at redshift $z=2$ with no star-formation: Implications for accretion and wind scenarios
galaxies:evolution galaxies:formation galaxies:high-redshifts galaxies
2011/10/13
In order to understand which process (e.g. galactic winds, cold accretion) is responsible for the cool (T~10^4 K) halo gas around galaxies, we embarked on a program to study the star-formation propert...
A star forest is a collection of vertex-disjoint trees of depth at most 1, and its size is the number of leaves in all its components. A spanning star forest of a given graph G is a spanning subgraph ...
R-Process Nucleosynthesis in Dynamically Ejected Matter of Neutron Star Mergers
Nucleosynthesis Dynamically Ejected Matter Neutron Star Mergers
2011/9/28
Although the rapid neutron-capture process, or r-process, is fundamentally important for explaining the origin of approximately half of the stable nuclei with A > 60, the astrophysical site of this pr...
We analyse the chromospherical activity of stars with extrasolar planets and search for a possible correlation between the equivalent width of the core of Ca II K line and orbital parameters of the pl...
An invariant formula for a star product with separation of variables
deformation quantization with separation of variables Kahler connection covariant tensors
2011/9/22
Abstract: We give an invariant formula for a star product with separation of variables on a pseudo-Kahler manifold.
Measuring a cosmological distance-redshift relationship using only gravitational wave observations of binary neutron star coalescences
neutron stars gravitational waves cosmology
2011/10/14
Detection of gravitational waves from the inspiral phase of binary neutron star coalescence will allow us to measure the effects of the tidal coupling in such systems. These effects will be measurable...