Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 442, Issue 1, Pages 273-284Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stu726
Keywords
stars: variables: general; open clusters and associations: individual
Categories
Ask authors/readers for more resources
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. 45 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 beta Cep, slowly pulsating B stars and new class variables as discussed by Mowlavi et al. These variable candidates show similar to 0.005 to similar to 0.02 mag brightness variations with periods of <1.0 d. 17 new class variables are located in the H - R diagram between the slowly pulsating B stars and d Scuti variables. Pulsation could be one of the causes for periodic brightness variations in these stars. The X-ray emission of present main-sequence variables associated with the cluster lies in the saturated region of X-ray luminosity versus period diagram and follows the general trend by Pizzolato et al.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available