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11 papers · 2 filters
Binaries among low-mass stars in nearby young moving groups
Markus Janson, Stephen Durkan, Stefan Hippler +5
The solar galactic neighbourhood contains a number of young co-moving associations of stars (so-called `young moving groups') with ages of ~10--150 Myr, which are prime targets for…
Magnetic cycles in a dynamo simulation of fully convective M-star Proxima Centauri
Rakesh K. Yadav, Ulrich R. Christensen, Scott J. Wolk +1
The recent discovery of an Earth-like exoplanet around Proxima Centauri has shined a spot light on slowly rotating fully convective M-stars. When such stars rotate rapidly (period…
Unravelling the components of a multi-thermal coronal loop using magnetohydrodynamic seismology
S. Krishna Prasad, D. B. Jess, J. A. Klimchuk +1
Coronal loops, constituting the basic building blocks of the active Sun, serve as primary targets to help understand the mechanisms responsible for maintaining multi-million Kelvin…
TYC 8241 2652 1 and the case of the disappearing disk: no smoking gun yet
Hans Moritz Günther, Stefan Kraus, Carl Melis +12
TYC 8241 2652 1 is a young star that showed a strong mid-infrared (mid-IR, 8-25 mu) excess in all observations before 2008 consistent with a dusty disk. Between 2008 and 2010 the m…
Early observations of the nearby type Ia supernova SN 2015F
R. Cartier, M. Sullivan, R. Firth +25
We present photometry and time-series spectroscopy of the nearby type Ia supernova (SN Ia) SN 2015F over days to days relative to maximum light, obtained as part of the…
Observations and simulations of the Na I D1 line profiles in an M-class solar flare
D. Kuridze, M. Mathioudakis, D. J. Christian +7
We study the temporal evolution of the Na I D1 line profiles in the M3.9 flare SOL2014-06-11T21:03 UT, using high spectral resolution observations obtained with the IBIS instrument…