@article{ee2977666f974a20b5334884039b99e0,
title = "Surface magnetism of cool stars",
abstract = "Magnetic fields are essential ingredients of many physical processes in the interiors and envelopes of cool stars. Yet their direct detection and characterization is notoriously difficult, requiring high-quality observations and advanced analysis techniques. Significant progress has been recently achieved by several types of direct magnetic field studies on the surfaces of cool, active stars. In particular, complementary techniques of field topology mapping with polarization data and total magnetic flux measurements from intensity spectra have been systematically applied to different classes of active stars, leading to interesting and occasionally controversial results. In this paper, we summarize the current status of direct magnetic field studies of cool stars and investigations of surface inhomogeneities caused by the field, based on the material presented at the Cool Stars 19 splinter session.",
keywords = "stars: activity – stars: late-type – stars: low-mass – stars: magnetic field – starspots",
author = "O. Kochukhov and P. Petit and Strassmeier, {K. G.} and Carroll, {T. A.} and R. Fares and Folsom, {C. P.} and Jeffers, {S. V.} and H. Korhonen and Monnier, {J. D.} and J. Morin and L. Ros{\'e}n and Roettenbacher, {R. M.} and D. Shulyak",
note = "Funding Information: C.P.F. was supported by the grant ANR 2011 Blanc SIMI5-6 020 01 “Toupies: Towards understanding the spin evolution of stars” (http://ipag.osug.fr/Anr\_Toupies/). He also thanks the IDEX initiative at Universit{\'e} F{\'e}d{\'e}rale Toulouse Midi-Pyr{\'e}n{\'e}es (UFTMiP) for funding through the STEPS collaboration program between IRAP/OMP and ESO. R.F. acknowledges partial support from STFC consolidated grant number ST/J001651/1. D.S. acknowledges support from DFG project CRC 963 “Astrophysical Flow Instabilities and Turbulence”. O.K. acknowledges support by the Swedish Research Council and the Swedish National Space Board. H.K. thanks the Fonden Dr. N.P. Wieth-Knudsens Observatorium for the travel grant which made it possible for her to attend Cool Stars 19. J.D.M. and R.M.R. acknowledge support for the interferometric imaging work by the National Science Foundation (NSF) grant AST-1108963. Publisher Copyright: {\textcopyright} 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",
year = "2017",
month = may,
doi = "10.1002/asna.201713310",
language = "English",
volume = "338",
pages = "428--441",
journal = "Astronomische Nachrichten",
issn = "0004-6337",
publisher = "Wiley-VCH Verlag",
number = "4",
}