In this work,we studied the variable stars in the open cluster NGC 1912 based on the photometric observations and Gaia DR2 *** than 3600 CCD frames in B,V,R filters were reduced,and we obtained the light curves that s...
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In this work,we studied the variable stars in the open cluster NGC 1912 based on the photometric observations and Gaia DR2 *** than 3600 CCD frames in B,V,R filters were reduced,and we obtained the light curves that span about 63 *** analyzing these light curves,we detected 24 variable stars,including 16 periodic variable stars,seven eclipsing binaries and one star whose type is *** these 24 variable stars,11 are newly discovered,which are classified as sixγDoradus stars,oneδScuti star,three detached binaries and one contact *** also confirmed 13 previously known variable *** on cluster members identified by Cantat-Gaudin et al.(2018),we inferred cluster memberships for these detected variable *** Gaia DR2 data,we plotted a new color-magnitude diagram for NGC1912,and showed the nature of variable cluster members in kinematical properties and heliocentric *** the 24 variable stars,seven variables are probable cluster members,which show homogeneity in kinematic characters and space position with the established cluster *** of the seven variable cluster members are the previously discovered stars,consisting of twoγDor stars and twoδSct *** remaining three variable cluster members,which are allγDor stars,are firstly detected in this *** main physical parameters of these variable cluster members estimated from the color-magnitude diagram are log(age/yr)=8.75,[Fe/H]=-0.1,m-M=10.03 mag,and E(B-V)=0.307.
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