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Periodicity Search in Sources with Low Count Rate
Bisnovatyi-Kogan, G. S.; Gurin, L. S.; Beliaeva, N. P. +2 more
The problem of discovery and estimation of the period, slowly changing in time is considered, when the pulses are rare. Several criteria are proposed on the base of which a multilevel algorithm of the period detection is constructed. The reliability and precision of the period determination are investigated with taking into account of the correlat…
Column Densities of Interstellar Matter in the Direction of the Star Kappa-Cassiopeiae B1IA
Mentese, H. Huseyin
We have studied the interstellar column densities in the direction of the star κCas with the IUE high resolution SWP spectrum so as to see the relations of element depletions with condensation temperature and compare our results with the interstellar column densities in the directions of the other B-type stars obtained with the COPERNICUS satellit…