Search of variable stars in the field of NGC 1960 and DOLIDGE 14. (arXiv:2101.00751v2 [astro-ph.SR] UPDATED)
<a href="http://arxiv.org/find/astro-ph/1/au:+Joshi_G/0/1/0/all/0/1">Gireesh C. Joshi</a>

Open clusters are host the several identical stars in the similar physical
and chemical environment. They become interesting objects to identify the
variable stars in the lower metallicity domain. In the present paper, the CCD
time series observations of cluster NGC1960 and DOLIDZE14 are performed to
search the variable stars within them. A comprehensive method of differential
phototometry and secondary standardization transformation is carried out to
search the stellar pulsation. A total of 18 and 4 short periodic variables
found in the field of NGC 1960 and DOLIDZE 14 respectively. Fast Fourier
transformation techniques are utilized to compute the pulsation. The period and
classification of 18 discovered variables of NGC 1960 are discussed, which
consist of one Planet transit variable, one RR Lyre-d variable, one Beta Cep
variable, one Gamma- Dor variable, one dual character Delta Scuti+RRC)
variable, two irregular variable, two s-Cepheid variables, four Delta Scuti
variables and five RRC variables. In the case of DOLIDZE 14, four discovered
variables consist of one Flare-type variable, one SX-Phenocs variable and two
Delta Scuti variables.

Open clusters are host the several identical stars in the similar physical
and chemical environment. They become interesting objects to identify the
variable stars in the lower metallicity domain. In the present paper, the CCD
time series observations of cluster NGC1960 and DOLIDZE14 are performed to
search the variable stars within them. A comprehensive method of differential
phototometry and secondary standardization transformation is carried out to
search the stellar pulsation. A total of 18 and 4 short periodic variables
found in the field of NGC 1960 and DOLIDZE 14 respectively. Fast Fourier
transformation techniques are utilized to compute the pulsation. The period and
classification of 18 discovered variables of NGC 1960 are discussed, which
consist of one Planet transit variable, one RR Lyre-d variable, one Beta Cep
variable, one Gamma- Dor variable, one dual character Delta Scuti+RRC)
variable, two irregular variable, two s-Cepheid variables, four Delta Scuti
variables and five RRC variables. In the case of DOLIDZE 14, four discovered
variables consist of one Flare-type variable, one SX-Phenocs variable and two
Delta Scuti variables.

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