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@article{2213764, author = {Liška, Jiří and Hudec, René and Mikulášek, Zdeněk and Zejda, Miloslav and Janík, Jan and Štrobl, Jan}, article_location = {MEXICO CITY}, article_number = {1}, doi = {http://dx.doi.org/10.22201/ia.01851101p.2022.58.01.12}, keywords = {methods: observational; stars: flare; stars: variables: general; surveys; techniques: photometric; X-rays: stars}, language = {eng}, issn = {0185-1101}, journal = {Revista Mexicana de Astronomia y Astrofisica}, title = {CZEV502-AN M DWARF NEAR THE LEO TRIPLET WITH VERY STRONG FLARES}, url = {http://www.astroscu.unam.mx/rmaa/RMxAA..58-1/PDF/RMxAA..58-1_jliska-XII.pdf}, volume = {58}, year = {2022} }
TY - JOUR ID - 2213764 AU - Liška, Jiří - Hudec, René - Mikulášek, Zdeněk - Zejda, Miloslav - Janík, Jan - Štrobl, Jan PY - 2022 TI - CZEV502-AN M DWARF NEAR THE LEO TRIPLET WITH VERY STRONG FLARES JF - Revista Mexicana de Astronomia y Astrofisica VL - 58 IS - 1 SP - 155-168 EP - 155-168 PB - Universidad Nacional Autonoma de Mexico SN - 01851101 KW - methods: observational KW - stars: flare KW - stars: variables: general KW - surveys KW - techniques: photometric KW - X-rays: stars UR - http://www.astroscu.unam.mx/rmaa/RMxAA..58-1/PDF/RMxAA..58-1_jliska-XII.pdf N2 - Discovery of flares in the M dwarf CzeV502 and our follow-up results are presented. We classify it as a dMe eruptive variable of UV Ceti type due to the X-ray activity, measured B -V of 1.5 mag, H alpha emission, and flares. Our monitoring revealed only one reliable and one suspected superflare in 58 nights (210 hrs). The strongest flare with Delta R = 1.5 mag (Delta B approximate to 6-8 mag) could have a total energy of 3E+34 erg. The ASAS-SN data may contain 4 events up to Delta V of 0.43 mag and 12.55 d periodicity corresponding to the rotation or possible binarity. Other brightenings in sky survey (ASAS-3, CRTS, NSVS, and KWS) are doubtful. No event was unveiled on the 1600 photographic plates. The upper rate limit of 1-2 superflares/1 640 hrs corresponds to activity several orders higher than for other M-dwarfs, especially, for the slow rotators. The low amplitude flares (Delta B < 0.5 mag) may be common (1 flare/4 hrs). ER -
LIŠKA, Jiří, René HUDEC, Zdeněk MIKULÁŠEK, Miloslav ZEJDA, Jan JANÍK a Jan ŠTROBL. CZEV502-AN M DWARF NEAR THE LEO TRIPLET WITH VERY STRONG FLARES. \textit{Revista Mexicana de Astronomia y Astrofisica}. MEXICO CITY: Universidad Nacional Autonoma de Mexico, 2022, roč.~58, č.~1, s.~155-168. ISSN~0185-1101. Dostupné z: https://dx.doi.org/10.22201/ia.01851101p.2022.58.01.12.
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