Main-sequence variable stars in young open cluster NGC 1893

  title={Main-sequence variable stars in young open cluster NGC 1893},
  author={Sneh Lata and Ram Kesh Yadav and Anil Kumar Pandey and Andrea Richichi and Chakali Eswaraiah and Brajesh Kumar and Norbert Kappelmann and Saurabh Sharma},
In this paper we present time series photometry of 104 variable stars in the cluster region NGC 1893. The association of the present variable candidates to the cluster NGC 1893 has been determined by using (U −B)/(B−V ) and (J −H)/(H−K) two colour diagrams, and V/(V − I) colour magnitude diagram. Forty five stars are found to be main-sequence variables and these could be B-type variable stars associated with the cluster. We classified these objects as β Cep, slowly pulsating B stars and new… 

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The war exacts its heavy toll of human life, and science is not spared. On our side we have not forgotten the loss of the physicist Mpseley, at the threshold of a great career ; now, from the enemy,