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0178Three New Variable Stars in the Field of KN Vul
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Martin Lehky2016-11-03
 Three new variable stars were found in the field of EW eclipsing binary KN Vul using 0.40-m f/5 JST reflector of the Astronomical Society in Hradec Králové, Czech Republic. In order to confirm the light variations and to determine precise periods, amplitudes, colour indices and types of variability, vicinity of the new variable stars during the period between October 2010 – October 2011 (13 nights) was observed. The shape of the light curve and basic parameters allowed classification of HKV9 Vul = CzeV254 = USNO-B1.0 1177-0589158 as an EW eclipsing binary (Min I = HJD 2455482.27667 + 0.3328594 × E), HKV12 Vul = CzeV338 = USNO-B1.0 1177-0589357 as a pulsating variable star, BCEP or DSCT (Max = HJD 2455792.48972 + 0.280559 × E), HKV13 Vul = CzeV339 = USNO-B1.0 1176-0576059 as an EW eclipsing binary (Min I = HJD 2455819.32899 + 0.779826 × E).

Simbad object(s): USNO-B1.0 1176-0576059, USNO-B1.0 1177-0589357, USNO-B1.0 1177-0589158, ,


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