Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-14T22:46:10.380Z Has data issue: false hasContentIssue false
  • English
  • Français

Atmospheric motions and granulation in cool stars - observations and theory

Published online by Cambridge University Press:  25 May 2016

P.L. Cottrell
P.L. Cottrell*
Affiliation:
Mount John University Observatory Dept of Physics & Astronomy University of Canterbury, Christchurch, New Zealand

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

This review presents a number of aspects in our quest for an understanding of the detailed structure of cool star stellar atmospheres through the study of atmospheric motion. It includes the observational tools (e.g. direct imaging, detailed analyses of line profiles) used to determine the type and amount of motion, as well as the modelling techniques (e.g. simulated images, velocity and pressure fields) used to interpret and describe these motions.

Linkages will be made through the solar-stellar connection to provide insight into the structure of stars where detailed imaging is not possible, and to the determination of the fundamental parameters of stars, such as effective temperature, surface gravity and elemental abundances.

Type
Stellar Atmospheres
Information
Symposium - International Astronomical Union , Volume 189: Fundamental Stellar Properties: The Interaction Between Observation and Theory , 1997 , pp. 239 - 244
Copyright
Copyright © Kluwer 1997 

References

Collados, M., Rodriguez Hidalgo, I., Ballesteros, E., Ruiz Cobo, B., Sanchez Almeida, J. & del Toro Iniesta, J.C. 1996 A&A Supp. , 115, 367–77.Google Scholar
Dawes, W.R. (1964) MNRAS , 24, 161.Google Scholar
Gadun, A.S. & Vorob'yov, Yu. Yu. (1995) Solar Physics , 159, 45–51.Google Scholar
Glebocki, R. & Stawikowski, A. (1980) in Stellar Turbulence , (eds Gray, D.F. & Linsky, J.L.) IAU Coll. 51, p55.Google Scholar
Gray, D.F. (1988) in Lectures on spectral-line analysis: F, G and K stars , Lecture 4 -Stellar Granulation.Google Scholar
Gray, D.F. & Nagel, T. (1989) ApJ , 341, 421–6.Google Scholar
Gray, D.F., Baliunas, S.L., Lockwood, G.W. & Skiff, B.A. (1996) ApJ , 465, 945–50.Google Scholar
Nordlund, Å. & Stein, R.F. (1991) in ‘Challenges to theories of the structure of moderate-mass stars’ (eds Gough, D. & Toomre, J) Lecture Notes in Physics , 388, 141.Google Scholar
Paxman, R.G., Seldin, J.H., Lofdahl, M.G., Scharmer, G.B. & Keller, C.U. (1996) ApJ , 466, 1087–99.CrossRefGoogle Scholar
Spruit, H.C., Nordlund, Å. & Title, A.M. (1990) Ann. Rev. Astron. Astrophys. , 28, 263.Google Scholar
Stein, R.F. & Nordlund, Å (1991) in ‘Challenges to theories of the structure of moderate-mass stars’ (eds Gough, D. & Toomre, J) Lecture Notes in Physics , 388, 195.CrossRefGoogle Scholar
Title, A.M. & Berger, T.E. (1996) ApJ , 463, 797–807.Google Scholar
Wallerstein, G., Jacobsen, T.S., Cottrell, P.L., Clark, M. & Albrow, M.D. (1992) MNRAS , 259, 474–88.Google Scholar