Optical flares from the faint mid-dM star 2MASS J00453912+4140395

Z. Kővári, F. Vilardell, I. Ribas, K. Vida, L. Van Driel-Gesztelyi, C. Jordi, K. Oláh

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We present B and V light curves of a large stellar flare obtained with the Wide Field Camera at the Isaac Newton 2.5-m telescope (La Palma). The source object is a faint (mV = 21.38) foreground star in the field of the Andromeda galaxy, with its most probable spectral type being dM4. We provide an estimate of the total flare energy in the optical range and find it to be of the order of 1035 erg. The cooling phase of the large flare shows three additional weak flare-like events, which we interpret as results of a triggering mechanism also observed on the Sun during large coronal mass ejections.

Original languageEnglish
Pages (from-to)904-908
Number of pages5
JournalAstronomische Nachrichten
Volume328
Issue number9
DOIs
Publication statusPublished - Sep 2007

Fingerprint

coronal mass ejection
erg
flares
cooling
stars
stellar flares
Andromeda Galaxy
energy
newton
light curve
sun
cameras
telescopes
estimates

Keywords

  • Stars: activity
  • Stars: flare
  • Sun: coronal mass ejections (CMEs)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Kővári, Z., Vilardell, F., Ribas, I., Vida, K., Van Driel-Gesztelyi, L., Jordi, C., & Oláh, K. (2007). Optical flares from the faint mid-dM star 2MASS J00453912+4140395. Astronomische Nachrichten, 328(9), 904-908. https://doi.org/10.1002/asna.200710756

Optical flares from the faint mid-dM star 2MASS J00453912+4140395. / Kővári, Z.; Vilardell, F.; Ribas, I.; Vida, K.; Van Driel-Gesztelyi, L.; Jordi, C.; Oláh, K.

In: Astronomische Nachrichten, Vol. 328, No. 9, 09.2007, p. 904-908.

Research output: Contribution to journalArticle

Kővári, Z, Vilardell, F, Ribas, I, Vida, K, Van Driel-Gesztelyi, L, Jordi, C & Oláh, K 2007, 'Optical flares from the faint mid-dM star 2MASS J00453912+4140395', Astronomische Nachrichten, vol. 328, no. 9, pp. 904-908. https://doi.org/10.1002/asna.200710756
Kővári Z, Vilardell F, Ribas I, Vida K, Van Driel-Gesztelyi L, Jordi C et al. Optical flares from the faint mid-dM star 2MASS J00453912+4140395. Astronomische Nachrichten. 2007 Sep;328(9):904-908. https://doi.org/10.1002/asna.200710756
Kővári, Z. ; Vilardell, F. ; Ribas, I. ; Vida, K. ; Van Driel-Gesztelyi, L. ; Jordi, C. ; Oláh, K. / Optical flares from the faint mid-dM star 2MASS J00453912+4140395. In: Astronomische Nachrichten. 2007 ; Vol. 328, No. 9. pp. 904-908.
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