24 citations · 114 across the 15 of their papers we have counts for
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OISTER Optical and Near-Infrared Observations of Type Iax Supernova 2012Z
Masayuki Yamanaka, Keiichi Maeda, Koji S. Kawabata +30
We report observations of the Type Iax supernova (SN Iax) 2012Z at optical and near-infrared wavelengths from immediately after the explosion until days after the maxi…
Determination of the Hubble Constant Using Cepheids
Mohamed Abdel-Sabour, Mohamed Ebrahim Nouh, Issa Ali Issa +5
This paper introduces a statistical treatment to use Cepheid variable stars as distance indicators. The expansion rate of the Universe is also studied here through deriving the val…
Photometric Investigation of the Total-Eclipsing Contact Binary V12 in the Intermediate-age Open Cluster NGC 7789
S. -B. Qian, A. Essam, J. -J. Wang +3
NGC 7789 is an intermediate-age open cluster with an age that is similar to the mean age of contact binary stars. V12 is a bright UMa-type binary star with an orbital period of 0.3…
First photometric analyses and classification for the W UMa type binary systems GSC 2362-2866 and GSC 107-596
A. Essam, N. S. Awadalla, M. A. El-Sadek +1
The CCD observations for the W UMa type binary systems GSC 2362-2866 and GSC 107-596 have been analyzed using the Wilson-Devinney Code to determine their photometric orbital and ph…
New Ccd Photometric Observations Of W-Uma Eclipsing Binary Nsv 5904 Using The 1.88-M Kottamia Telescope, Egypt
A. Essam, A. Naklawy, A. A. Haroon +6
New BVR light curves of the eclipsing binary system NSV 5904 have been constructed based on CCD observations obtained using 1.88-m telescope of Kottamia observatory during the phas…