[PDF] Top 20 Magnetic fields in O-, B- and A-type stars on the main sequence

... intensive magnetic surveys of massive stars have been performed by different col- laborations ...Massive Stars [13], BOB collaboration – B-fields in OB stars [14], BinaMIcs project – ... See full document

... solar-type stars with V 9, attempting to detect their magnetic ...stellar magnetic field and various stellar ...the magnetic fields of the targeted stars allows for the ... See full document

... A statistical assessment of SPI by Miller et al. (2015) shows that no particular correlation exists between proxies for SPI strength and coronal activity. A relationship with so- lar type (FGK) stars was ... See full document

... coronal magnetic field and also of the X-ray emission for the 2007, 2009 and 2010 mag- netic maps (see Paper ...The main change on the large scale is in the tilt of the dipole component of the ... See full document

... the magnetic en- ergy whereas the dipole field contains only 18 ± 5% and a quadrople field containing approximately 16 ± 7% of the magnetic ...where stars with signifi- cant toroidal fields ... See full document

... three main aspects to this BCool project studies of solar- type stars: (1) a snapshot survey of a large number of solar-type stars, in order to determine the number of stars ... See full document

... Ae/Be stars appear in binary/multiple systems (Baines et ...measured magnetic field to the particular compo- nent in the Herbig Ae/Be ...dipolar magnetic field in the Herbig Be star HD 200775, which ... See full document

... of magnetic fields on the surfaces of young solar- type stars, but in order to determine if such stars are undergoing magnetic reversals we need to be able to map the surface ... See full document

... -type stars was extensively studied by A bt (1965), who found th a t, for staxs in the spectral range A4 - F2, nearly 30% were spectro­ scopic ...short o rbital periods (< ...-type ... See full document

... solar-type stars with the rapid rotation (normally v sini > 20 km/s) needed for spot mapping, and exhibiting definite magnetic field detections (see for example Waite et ...solar- type ... See full document

... evolutionary sequence, the stellar radius is increased over that of models without turbulent pressure by at most a few per cent at any time during its main- sequence ...by magnetic ... See full document

... large-scale magnetic field strengths and topologies for 15 solar-type stars close the ZAMS, with ages ranging from 20 to 250 ...The stars have a range of complex magnetic ge- ometries, ... See full document

... the magnetic energy of that toroidal ...the magnetic topologies had significantly ...mean magnetic field strength was reduced ...stellar magnetic field ...toroidal fields also remain ... See full document

... 2011, Magnetic fields and differential rotation on the pre-main sequence - ...coronal magnetic field, H α emission and differential rotation, MNRAS, 413, ... See full document

... the magnetic field, and therefore, ZDI can yield information about all three components of the magnetic field over the stellar ...the magnetic field of an unresolved star by Donati et ...first ... See full document

... where stars are born are only weakly ion- ized ...three main non-ideal MHD effects – ambipolar (ion-neutral) diffusion, Ohmic resistivity, and the Hall effect – where the relative importance of each of ... See full document

... pre-main sequence stars may cause differences in the evolution of accretion, disk composition and grain ...mass stars to form planetary ...200 stars ranging from ∼ 20 to ...of ... See full document

... of magnetic Bp stars has been restricted to mainly individual studies of specific ...the magnetic field geometry and abundance variations over the stellar surface ...the magnetic field ... See full document

... presumed main sequence stars (red circles) and ensembles of known cool subdwarfs (yellow diamonds) and known young stars (blue ...late- type red dwarf is just smaller than ...for ... See full document

... Abstract:- The discovery of extrasolar planets, especially the habitable planets to be one of the most exciting and continuous studies has developed rapidly hitherto. The habitable planet must be in a habitable zone. The ... See full document