Activity in Red-Dwarf Stars

1. Front Matter

   Pages i-xxvi

   PDF

2. Introductory Address

   1. Introductory Address

      • M. Rodonò

      Pages 1-3

3. Magnetic Fields and Activity of the Sun and Stabs: An Overview

   1. Magnetic Fields and Activity of the Sun and Stars: An Overview

      • Robert Rosner

      Pages 5-14

4. General Characteristics of Active Dwarfs

   1. Front Matter

      Pages 15-15

      PDF

   2. Global and Photospheric Physical Parameters of Active Dwarf Stars

      • B. R. Pettersen

      Pages 17-33

   3. Mean Colors and Effective Temperatures of K and M Dwarfs

      • Robert F. Wing

      Pages 35-38

   4. The Quiescent Chromospheres and Transition Regions of Active Dwarf Stars: What are We Learning from Recent Observations and Models?

      • Jeffrey L. Linsky

      Pages 39-60

   5. The Structure and Energy Balance in Main Sequence Stars

      • C. Jordan, T. R. Ayres, A. Brown

      Pages 61-65

   6. The Distribution of Chromospheric Emission Strengths Among Red Dwarfs

      • David R. Soderblom

      Pages 67-70

   7. Chromospheric Emission and Rotation of Main Sequence Stars

      • S. Catalano, E. Marilli

      Pages 71-73

   8. Late-Type Ca II Emission-Line Stars in the Southern Hemisphere

      • A. C. Collier

      Pages 75-76

   9. The Atmosphere of a Probably Very Young by Dra-Type Flare Star

      • R. de la Reza, C. J. Butler, C. A. O. Torres, C. C. Batalha

      Pages 77-77

   10. Some Properties of Stellar Transition Regions

       • Mikael Saxner

       Pages 79-81

   11. Quiescent Coronae of Active Chromosphere Stars

       • Leon Golub

       Pages 83-108

   12. Einstein and IUE Observations of Nearby Red Dwarfs

       • Hugh M. Johnson

       Pages 109-124

   13. X-Ray Emission from Flare Stars

       • P. C. Agrawal, A. R. Rao, B. V. Sreekantan

       Pages 125-129

   14. Stellar X-Ray Activity in the Hyades

       • Robert A. Stern, Marie-Christine Zolcinski

       Pages 131-134

5. Observed Activity in Red-Dwarfs

   1. Front Matter

      Pages 135-135

      PDF

   2. Spots, Spot-Cycles and Magnetic Fields of Late-Type Dwarfs

      • Steven S. Vogt

      Pages 137-156

   3. Optical Photometry of Flares and Flare Statistics

      • Patrick B. Byrne

      Pages 157-174

IAU Colloquium No. 71 had its immediate origins in a small gathering of people interested. in the optical and UV study of flare stars which took place during the 1979 Montreal General Assembly. We recognized that a fundamental change was taking place in the study of these objects. Space-borne instruments (especially lUE and Einstein) and a new genera­ tion of ground-based equipment were having a profound effect on the range of investigations it was possible to make. To extract maximum benefit from these new possibilities it would be necessary as never before to have good communication with colleagues in other disciplines, for instance,. with atomic and solar physicists. Similarly, studies of phenomena associated with the outer atmospheres of the late-type stars could now hope to give significant insights into certain aspects of solar activity. So, in view of the wide range of backgrounds of those participating, the meeting had an unusually high proportion of invited reviews while most of the contributed papers were presented as posters. It is gratifying that in the short time since the meeting a good deal of correspondence has been received from participants remarking on the success of this format. Once the decision had been taken in principle to hold the meeting, a very considerable amount of work fell on the two organizing committees, viz. the Scientific and Local Organizing Committees. The Scientific Organizing Committee was chaired by D.J. Mullan and consisted of A.D.

• Accretion
• Variation
• interferometry
• magnetosphere
• observatory
• photometry
• planet
• spectroscopy
• star
• stars
• stellar
• sun

• Armagh Observatory, Northern Ireland

  Patrick B. Byrne

• Astrophysical Observatory, Italy

  Marcello Rodonò

• University of Catania, Italy

  Marcello Rodonò

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