O. Havnes / B.R. Pettersen / J.H.M.M. Schmitt / Jan-Erik Solheim (Hgg.)

Activity in Cool Star Envelopes

Proceedings of the Midnight Sun Conference, held in Tromsø, Norway, July 1¿8,1987
Herausgegeben:Havnes, O.; Pettersen, B. R.; Solheim, Jan-Erik

• Gebundenes Buch

Produktbeschreibung

Proceedings of the Midnight Sun Conference, held in Tromsø, Norway, July 1-8, 1987

Produktdetails

• Astrophysics and Space Science Library 143
• Verlag: Springer / Springer Netherlands
• Artikelnr. des Verlages: 978-90-277-2706-0
• 1988.
• Seitenzahl: 372
• Erscheinungstermin: 31. Mai 1988
• Englisch
• Abmessung: 241mm x 160mm x 25mm
• Gewicht: 699g
• ISBN-13: 9789027727060
• ISBN-10: 9027727066
• Artikelnr.: 21333549

Inhaltsangabe

I. Magnetic Fields.- Stellar Magnetic Fields, Origin and Structure.- Observational Constraints for Solar-Type Dynamos.- The Development of Structure in Coronal Magnetic Fields.- Stellar magnetic fields: measurements and diagnostics.- A new technique for the measurement of stellar magnetic fields: First Results.- Multiwavelength observations of magnetic fields and related activity on XI Bootis A.- II. Atmospheric Activity.- Atmospheric Activity in the outer envelopes of cool dwarf stars.- Radiation losses in chromospheric and transition region emission lines from AD Leo (dM4e).- Variation of the flare energy spectrum during the activity cycle of the UV CET-TYPE stars.- Statistical photometry of flare stars in the ultraviolet and photographic bands.- Photographic photometry and'statistical investigation of Pleiades flare stars.- B-19-A flare star in front of the NGC 7000 aggregate.- IRAS observations of flare stars.- Spectroscopic observations of X-ray selected late type stars.- Activity in envelopes of T Tauri Stars.- RY Lupi-A pulsating T Tauri Star?.- Deuterium burning and pulsational instabilities in pre-main-sequence stars.- Small scale stellar surface structures.- Visible and infrared photometry of ER Val.- Spot activity and circumstellar matter in II Peg.- III. Stellar and Solar Flares.- Magnetic reconnection models of flares.- Conditions for transition from quiescent to active states in stellar atmospheres.- Stellar and solar flares: Some theoretical problems from the point of view of modern observations.- Quasi-static evolution of a force-free magnetic field - Applications to the theory of stellar flares and coronal heating.- Flares: Magnetic or convective origin?.- Simultaneous optical and infrared observations of stellar flares.- Coordinated photometry,spectroscopy and X-ray observations of flare stars.- Modeling of long-decay stellar flares on EQ Peg and Prox Cen.- Spatially resolved flares in RSCVn Systems.- Simultaneous EXOSAT and VLA observations of the W UMa binaries VW Cep and XY Leo: A Flare on VW Cep.- IV. Stellar Coronae and Winds.- Models of Solar-type coronae.- Acceleration of energetic particles in solar flares.- Effect of a dense coronal region on line observations from coronal holes.- Dynamic Nature of coronal heating.- Stellar X-ray astronomy with ROSAT.- Observing Cool Stars with the XUV wide field camera on ROSAT.- On solar and stellar coronal models.- EXOSAT observations of RSCVn stars.- Densities and heating of coronae of the active late-type dwarfs.- EXOSAT observations of quiescent and flaring emission from M dwarf flare stars.- X-ray variability of dM stars observed by EXOSAT.- Stellar Radio Emission.- Radio Emission Processes Related to Solar Flares.- Properties of Stellar Magnetospheres Deduced from Radio Observations of Close Binaries.- VLA observations of the X-ray bright Hyades M-dwarfs.- Radio Emission from Active Young Stars in the RHO OPHIUCHI CLOUD.- Mass Loss Mechanisms for Cool Stars.- Winds in Cool Stars.- The Ultraviolet Variability of Betelgeuse.- Envelope Activity of the K-Type Supergiant HD 4817.- Helium Lines Formation in T-Tauri Stars.- (X-ray observations of solar flares.- Name Index.- Object Index.