output
19982026
most citedRate of Period Change as a Diagnostic of Cepheid Properties

125 citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing 2011Show all

8 papers · 1 filter

astro-ph.CO2011★ 3 cited

Statistics of interacting galaxies at z~0.7

V. P. Reshetnikov, Y. H. Mohamed

We present the results of our analysis of the frequencies of galaxies with tidal tails and M51-type galaxies in several deep fields of the Hubble Space Telescope (HDF-N, HDF-S, HUD…

astro-ph.GA2011★ 9 cited

PPMXL photometric analysis of three open cluster candidates

A. L. Tadross

We present here the astrophysical parameters of three stellar open cluster candidates using PPMXL1 database. In this study, the main photometric, astrometry and statistical paramet…

astro-ph.GA2011★ 5 cited

First PPMXL photometric analysis of open cluster "Ruprecht 15"

A. L. Tadross

We present here our first series in studying the astrophysical parameters of the open cluster "Ruprecht 15" using PPMXL1 database. In this context, the photometric, astrometry and…

astro-ph.HE2011

X-Ray Spectral Study of AGN Sources Content in Some Deep Extragalactic XMM-Newton Fields

M. A. Hassan, B. A. Korany, R. Misra +3

We undertake a spectral study of a sample of bright X-ray sources taken from six XMM-Newton fields at high galactic latitudes, where AGN are the most populous class. These six fiel…

astro-ph.CO2011★ 42 cited

The 2XMMi/SDSS Galaxy Cluster Survey I. The first cluster sample and X-ray luminosity-temperature relation

A. Takey, A. Schwope, G. Lamer

We present a catalogue of X-ray selected galaxy clusters and groups as a first release of the 2XMMi/SDSS Galaxy Cluster Survey. The survey is a search for galaxy clusters detected…

astro-ph.CO2011★ 7 cited

On the characteristics of tidal structures of interacting galaxies

Y. H. Mohamed, V. P. Reshetnikov, N. Ya. Sotnikova

We present the results of our analysis of the geometrical tidal tail characteristics for nearby and distant interacting galaxies. The sample includes more than two hundred nearby g…

astro-ph.GA2011★ 36 cited

A catalog of 120 NGC open star clusters

A. L. Tadross

A sample of 145 JHK--2MASS observations of NGC open star clusters is studied, of which 132 have never been studied before. Twelve are classified as non-open clusters and 13 are re-…

astro-ph.GA2011★ 1 cited

Astrophysical parameters of ten poorly studied open star clusters

A. L. Tadross, R. El-Bendary, A. Osman +2

We present here the fundamental parameters of ten open star clusters, nominated from Kronberger et al. (2006) who presented some new discovered stellar groups on the basis of 2MASS…