Variable Stars in the Field of the Open Cluster NGC 2126

Abstract

We report the results of a time-series CCD photometric survey of variable stars in the field of the open cluster NGC 2126. In about one square degree field covering the cluster, a total number of 21 variable candidates are detected during this survey, of which 16 are newly found. The periods, classifications and spectral types of 14 newly discovered variables are discussed, which consist of six eclipsing binaries systems, three pulsating variable stars, three long period variables, one RS CVn star, and one W UMa or $\delta$ Scuti star. In addition, there are two variable candidates, the properties of which cannot be determined in this paper. By a method based on fitting spectral energy distributions(SEDs) of stars with theoretical ones, the membership probabilities and the fundamental parameters of this cluster are determined. As a result, five variables are probably members of NGC 2126. The fundamental parameters of the this cluster are determined as: the metallicity to be 0.008 $Z_{\odot }$, the age $\log (t)$= 8.95, the distance modulus $(m-M{)}_0$= 10.34 and the reddening value $E(B-V)$=0.55 mag.

12 pages, accepted for publication in RAA

References in corpus (5)

• Variable stars in the open cluster NGC 6791 and its surrounding field
• BATC 13-band Photometry of Open Cluster NGC 7789
• Variable Stars in the Open Cluster NGC 2099 (M37)
• Membership Determination of Open Cluster M48 Based on BATC Thirteen-Band Photometry
• Variable stars in the field of the old open cluster Melotte 66

Cited by in corpus (2)

• Contact Binaries as Viable Distance Indicators: New, Competitive (V)JHKs Period-Luminosity Relations
• Period-Luminosity-Metallicity-Color Relations of Late-type Contact Binaries in the Big Data Era