Observations of the suspected RR Lyr stars NSV 14172 and NSV 14264

Abstract

NSV 14264 and NSV 14172 are suspected to be variable stars of RR Lyr type (Brun, 1964). They were observed during three nights in October 2018 with a 25cm diameter telescope. These observations completed by ASAS-SN survey data bring to the conclusion that these two stars are not RR Lyraes but constant stars in the limit of the precision of the present photometry. The analysis of GAIA data allows to say that NSV 14264 is a main sequence dwarf similar to the Sun but that NSV 14172 is a yellow giant star located in the HR diagram at the limit between RR Lyraes and CW cepheids; however, it does not pulsate with significant amplitude.