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We discovered the outburst of 2MASS J06422218-0226285. Between end 2012 and early 2014, this object brightened by 3 mag in r and i, and by 3.7 mag in J. Since then, it has stayed at high brightness of about 16 mag in r and 15 mag in i. Possible explanations for this kind of light curve might be a Catalysmic Variable, a Symbiotic Binary or a FUor or EXor type Young Stellar Object. The color properties favor an outbursting Young Stellar Object. [ABSTRACT FROM AUTHOR]

The article discusses the Mira variable star V620 Oph observed by the CoRoT satellite, which is a fundamental mode pulsating RR Lyrae star and shows a small amplitude but real Blazhko effect.

The article discusses the orbital period of the cataclysmic variable stars AO Piscium (Psc). Topics covered include the findings of the photometric observations of AO Psc carried out over eleven seasons, from 2004 to 2014, the results of the fits and cycle counts, and the least square method to determine the amplitudes.

The article presents a study which monitors the open cluster IC4651. Methods and instruments used in the observations of the long period variables (LPVs) in stellar clusters conducted at Mount Stromlo in Australia. Results of the study and several charts are presented showing the light curves of the four variables detected and 2MASS colour-magnitude diagram for sources 10 arcminutes in IC4651.

The article discusses a study on the three eclipsing binary systems SW Lacertae, CN Andromedae and V502 Ophiuchi which exhibits a variable of O'Connell effect in an orbital period of variable stars. The study examines the photometric observation of the systems for evidence of correlation between orbital period change and size of asymmetry in maxima. The research also outlines the behavioral approach of starsport cycles and its phenomena in the binary system.

The article focuses on a research study that confirms the formation of V409 Cen and V4142 Sgr Double Periodic Variables (DPVs). It notes that the researchers examined the All Sky Automated Survey (ASAS) catalogue of semi-detached eclipsing binaries that are characterized by a long photometric period that lasts about 33 times the orbital period. It also mentions that they inspected the light curves of the DPVs.