An atlas of gas temperature maps is presented for a flux limited catalog of galaxy clusters. The sample of clusters is based on the Edge et al. (1990) sample, with the inclusion of five additional clusters, all with fluxes fX(2 − 10 keV) ≥ 1.7 × 10 −11 ergs sec cm, drawn from a variety of other sources. The temperature maps are derived from ASCA GIS observations using a common methodology to co...

Optically selected clusters of galaxies display a relation between their optical mass estimates and their X-ray luminosities LX that has a large scatter. A substantial fraction of optically selected clusters have LX estimates or upper limits significantly below the values expected from the LX-mass relation established for X-ray selected clusters, i.e., these clusters are X-ray underluminous for...

Oscillatory cluster patterns are studied numerically in a reaction-diffusion model of the photosensitive Belousov-Zhabotinsky reaction supplemented with a global negative feedback. In one- and two-dimensional systems, families of cluster patterns arise for intermediate values of the feedback strength. These patterns consist of spatial domains of phase-shifted oscillations. The phase of the osci...

two bonding models i.e cumullenic and acetylenic models have been proposed to account for thebonding patterns in linear carbon clusters while the bonding patterns in cyclic and 3d geometries of theseclusters have remained ambiguous.this work presents the bonding patterns in various c4 and c5 pure clusters at mp2/aug-cc-pvtz level oftheory. this subject is studied in the light of modern bonding ...

Optically selected clusters of galaxies display a relation between their optical mass estimates and their X-ray luminosities LX with a large scatter. A substantial fraction of optically selected clusters have LX estimates or upper limits significantly below the values expected from the LX-mass relation established for X-ray selected clusters, i.e., these clusters are Xray underluminous for thei...

We present CCD broad band photometric observations in the fields of the Third Galactic Quadrant open clusters NGC 2580 and NGC 2588 (V (I)C and UBV (RI)C respectively). From the analysis of our data we found that NGC 2580 is located at a distance of about 4 kpc and its age is close to 160 Myr. As for NGC 2588, it is placed at about 5 kpc from the Sun and is 450 Myr old. This means that NGC 2588...

We derive photometric, structural and dynamical evolution-related parameters of five as yet unstudied low-contrast open clusters located in the third quadrant using 2MASS data. The target clusters are Czernik 31, Czernik 32, Haffner 9, Haffner 11 and Trumpler 13. We apply a statistical field-star decontamination procedure to infer on the intrinsic colour-magnitude diagram (CMD) morphology which...

We establish the global lower mass-bound property for largest connected components in critical window configuration model when degree distribution has an infinite third moment. The scaling limit of percolation clusters, viewed as measured metric spaces, was established our prior work with respect to Gromov-weak topology. Our result extends those results stronger Gromov-Hausdorff-Prokhorov topol...