Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-12-10
Astronomy and Astrophysics
Astrophysics
11 pages, 8 tables, accepted by A&A
Scientific paper
10.1051/0004-6361:20011743
Spectroscopic observations covering the wavelength range 3600--4600\AA are presented for a large flare on the late type M dwarf AT Mic (dM4.5e). A procedure to estimate the physical parameters of the flaring plasma has been used which assumes a simplified slab model of the flare based on a comparison of observed and computed Balmer decrements. With this procedure we have determined the electron density, electron temperature, optical thickness and temperature of the underlying source for the impulsive and gradual phases of the flare. The magnitude and duration of the flare allows us to trace the physical parameters of the response of the lower atmosphere. In order to check our derived values we have compared them with other methods. In addition, we have also applied our procedure to a stellar and a solar flare for which parameters have been obtained using other techniques.
Butler John C.
Doyle Gerry J.
Garcia-Alvarez David
Jevremovic Darko
Observatory Armagh
No associations
LandOfFree
Observations and modelling of a large optical flare on AT Microscopii does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Observations and modelling of a large optical flare on AT Microscopii, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observations and modelling of a large optical flare on AT Microscopii will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-139352