408 citations · 3.1k across the 48 of their papers we have counts for
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M-dwarf metallicities - A high-resolution spectroscopic study in the near infrared
Anna Önehag, Ulrike Heiter, Bengt Gustafsson +3
The relativley large spread in the derived metallicities ([Fe/H]) of M dwarfs shows that various approaches have not yet converged to consistency. The presence of strong molecular…
M2K: II. A Triple-Planet System Orbiting HIP 57274
Debra A. Fischer, Eric Gaidos, Andrew Howard +14
Doppler observations from Keck Observatory have revealed a triple planet system orbiting the nearby mid-type K dwarf, HIP 57274. The inner planet, HIP 57274b, is a super-Earth with…
Reducing low signal-to-noise FUSE spectra: confirmation of Lyman continuum escape from Haro 11
E. Leitet, N. Bergvall, N. Piskunov +1
Galaxies are believed to be the main providers of Lyman continuum (LyC) photons during the early phases of the cosmic reionization. Little is known however, when it comes to escape…
Doppler images of II Pegasi for 2004-2010
Thomas Hackman, Maarit J. Mantere, Marjaana Lindborg +4
Aims. We study the spot activity of II Peg during the years 2004-2010 to determine long- and short-term changes in the magnetic activity. In a previous study, we detected a persist…
First detection of linear polarization in the line profiles of active cool stars
O. Kochukhov, V. Makaganiuk, N. Piskunov +6
The application of high-resolution spectropolarimetry has led to major progress in understanding the magnetism and activity of late-type stars. During the last decade, magnetic fie…