منابع مشابه
Spectropolarimetry of cool stars
In recent years, the development of spectropolarimetric techniques deeply modified our knowledge of stellar magnetism. In the case of solar-type stars, the challenge is to measure a geometrically complex field and determine its evolution over very different time frames. In this article, I summarize some important observational results obtained in this field over the last two decades and detail ...
متن کاملRadio Emission from Cool Stars
Recent developments in the study of radio emission from cool stars are reviewed. The eld of stellar radio astronomy would barely exist if active cool stars were similar to the Sun. However, many active stars appear to be fundamentally diierent from the Sun in that they possess a nonthermal corona which produces strong and steady radio emission. That is, in addition to the thermal populations at...
متن کاملBrown Dwarfs and Cool Stars
We review the current picture of disks around cool stars and brown dwarfs, including disk fractions, mass estimates, disk structure and dispersal, accretion, dust composition, the debris disk phase. We discuss these in the framework of recent planet formation models. The study of disks around brown dwarfs and cool stars allows testing disk physics and planet formation processes in a parameter r...
متن کاملMagnetic topologies of cool stars
Stellar magnetic fields can be investigated using several, very complementary approaches. While conventional spectroscopy is capable of estimating the average magnetic strength of potentially complex field configurations thanks to its low sensitivity to the vector properties of the field, spectropolarimetry can be used to map the mediumand large-scale structure of magnetic topologies. In partic...
متن کاملVan Belle Cool Stars in Hot Places
During the last three decades, evidence has mounted that star and planet formation is not an isolated process, but is influenced by current and previous generations of stars. Although cool stars form in a range of environments, from isolated globules to rich embedded clusters, the influences of other stars on cool star and planet formation may be most significant in embedded clusters, where hun...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1977
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/179.3.417