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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 and 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, vol.~58, No~1, p.~155-168. ISSN~0185-1101. Available from: https://dx.doi.org/10.22201/ia.01851101p.2022.58.01.12.
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