We studied the stellar population and star clusters around six regions in the Large Magellanic Cloud (LMC) in order to understand the correlation between star formation and cluster formation episodes. We used the stellar data base of the OGLE II LMC survey and the star cluster catalogues. The analysis of the colourmagnitude diagrams (CMDs) were used to estimate the ages of the stellar populatio...

It is inferred from the symmetrical and luminous X-ray emission of fossil groups that they are mature, relaxed galaxy systems. Cosmological simulations and observations focusing on their dark halo and inter-galactic medium properties confirm their early formation. Recent photometric observations suggest that, unlike the majority of non-fossil brightest group galaxies (BGGs), the central early-t...

The release of SAS Scalable Performance Data Server 4.4 included SQL planner and execution optimizations for star schemas. This paper will cover important areas relevant to the SAS Scalable Performance Data Server star schema support: 1. basic concepts behind the star schema 2. overview of customer needs for star schemas 3. how the query is rewritten to enhance performance 4. limitation of the ...

If there exists the quark star of maximum mass ∼ 0.7M⊙ as suggested by recent Chandra observations, we show that the general relativistic collapse of a neutron star of mass greater than the maximum mass of the neutron star with angular momentum parameter q ≡ cJ/GM > 1 may lead to such a strange star. Here J and M are the angular momentum and the gravitational mass of the neutron star, respectiv...

Chinese star anise (Illicium verum Hook f.) is a well-known spice used in many cultures. Many populations use it as a treatment for infant colic. Japanese star anise (Illicium anisatum L), however, has been documented to have both neurologic and gastrointestinal toxicities. Recently, concern has been raised regarding the adulteration of Chinese star anise with Japanese star anise. We report 7 c...

The influence of strength of hyperon-hyperon interactions on neutron star properties. Abstract. An equation of state of neutron star matter with strange baryons has been obtained. The effects of the strength of hyperon-hyperon interactions on the equations of state constructed for the chosen parameter sets have been analyzed. Numerous neutron star models show that the appearance of hyperons is ...

A proper vertex coloring of a graphG is called a star-coloring if there is no path on four vertices assigned to two colors. The graph G is L-star-colorable if for a given list assignment L there is a star-coloring c such that c(v) ∈ L(v). If G is L-star-colorable for any list assignment L with |L(v)| ≥ k for all v ∈ V (G), then G is called k-star-choosable. The star list chromatic number of G, ...

A star-factor of a graph G is a spanning subgraph of G such that each of its component is a star. Clearly, every graph without isolated vertices has a star factor. A graph G is called star-uniform if all star-factors of G have the same number of components. To characterize star-uniform graphs was an open problem posed by Hartnell and Rall, which is motivated by the minimum cost spanning tree an...