SIMBAD references

2004A&A...420.1079F - Astronomy and Astrophysics, volume 420, 1079-1085 (2004/6-4)

Detection and high-resolution spectroscopy of a huge flare on the old M9 dwarf DENIS 104814.7-395606.1.

FUHRMEISTER B. and SCHMITT J.H.M.M.

Abstract (from CDS):

We report a flare on the M9 dwarf DENIS 104814.7-395606.1, whose mass places it directly at the hydrogen burning limit. The event was observed in a spectral sequence during 1.3h. Line shifts to bluer wavelengths were detected in Hα, Hβ, and in the NaI D lines, indicating mass motions. In addition we detect a flux enhancement on the blue side of the two Balmer lines in the last spectrum of our series. We interpret this as rising gas cloud with a projected velocity of about 100km/s which may lead to mass ejection. The higher Balmer lines Hγ to H8 are not seen due to our instrumental setup, but in the last spectrum there is strong evidence for H9 being in emission.

Abstract Copyright:

Journal keyword(s): stars: activity - stars: flare - stars: late-type

Simbad objects: 5

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2021.03.07-04:52:10

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