CZEV502-AN M DWARF NEAR THE LEO TRIPLET WITH VERY STRONG FLARES

J 2022

CZEV502-AN M DWARF NEAR THE LEO TRIPLET WITH VERY STRONG FLARES

LIŠKA, Jiří; René HUDEC; Zdeněk MIKULÁŠEK; Miloslav ZEJDA; Jan JANÍK et al.

Základní údaje

Originální název

CZEV502-AN M DWARF NEAR THE LEO TRIPLET WITH VERY STRONG FLARES

Autoři

LIŠKA, Jiří; René HUDEC; Zdeněk MIKULÁŠEK; Miloslav ZEJDA; Jan JANÍK a Jan ŠTROBL

Vydání

Revista Mexicana de Astronomia y Astrofisica, MEXICO CITY, Universidad Nacional Autonoma de Mexico, 2022, 0185-1101

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Mexiko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 1.000

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/22:00126533

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

methods: observational; stars: flare; stars: variables: general; surveys; techniques: photometric; X-rays: stars

Štítky

14312040, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 11. 1. 2023 11:29, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

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).

Citovat

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. 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://doi.org/10.22201/ia.01851101p.2022.58.01.12.

@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 = {https://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://doi.org/10.22201/ia.01851101p.2022.58.01.12.

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