2020
DOI: 10.1093/mnras/staa2881
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Abstract: This work presents the first long-term photometric variability survey of the intermediate-age open cluster NGC 559. Time-series V band photometric observations on 40 nights taken over more than three years with three different telescopes are analyzed to search for variable stars in the cluster. We investigate the data for the periodicity analysis and reveal 70 variable stars including 67 periodic variables in the target field, all of them are newly discovered. The membership analysis of the periodic variables … Show more

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Cited by 6 publications
(5 citation statements)
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“…We examined the light curves of all the periodic variables for the presence of primary and secondary minima, which is the signature of binary systems, by plotting phase-folded light curves corresponding to twice the obtained periods. The amplitude of the variation in periodic variables was calculated by taking half of the difference in the mean magnitudes of the three faintest and the three brightest points in the curves (Joshi et al 2020a). We have provided the basic parameters such as period, amplitude, and magnitude in Table 2.…”
Section: Identificationmentioning
confidence: 99%
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“…We examined the light curves of all the periodic variables for the presence of primary and secondary minima, which is the signature of binary systems, by plotting phase-folded light curves corresponding to twice the obtained periods. The amplitude of the variation in periodic variables was calculated by taking half of the difference in the mean magnitudes of the three faintest and the three brightest points in the curves (Joshi et al 2020a). We have provided the basic parameters such as period, amplitude, and magnitude in Table 2.…”
Section: Identificationmentioning
confidence: 99%
“…Mowlavi et al (2016) classified these stars as fast-rotating pulsating B (FaRPB) variable stars based on a spectroscopic study that revealed that the majority of these stars were fast-rotating. FaRPB stars are known to have short periods (p < 0.55 days; Mowlavi et al 2016;Joshi et al 2020a). However, these variables were classified as miscellaneous variables since they have periods significantly longer than 0.55 days.…”
Section: Misc Variablesmentioning
confidence: 99%
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“…Open clusters are exceptional laboratories for us to understand the fundamental astrophysical processes and one of the principal components of the galaxy. It is believed that a significant number of stars in the galaxy are formed in clusters (Joshi et al 2020). Therefore, their extensive study is vital to infer the star formation history in the galaxy (Phelps & Janes 1994) and to probe the Galactic structure (Chen et al 2003;Cantat-Gaudin et al 2018).…”
Section: Introductionmentioning
confidence: 99%