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Challenges and Opportunities in Stellar Granulation Observations

  • Dainis Dravins
Part of the NATO ASI Series book series (ASIC, volume 263)

Abstract

Effects of stellar granulation are observed in photospheric line asymmetries and wavelength shifts. Challenges for the future include achieving sufficiently high spectral resolution to fully resolve stellar line asymmetries; methods to identify granulation signatures also in heavily blended spectra; measuring differential wavelength shifts between groups of different lines in the same star; obtaining very accurate laboratory wavelengths; measuring different convective lineshifts in different stars; understanding activity-cycle lineshift variations that may hinder the detection of extrasolar planets; and ultimately spectroscopic and other studies of spatially resolved granulation structure across stellar disks.

Keywords

Radial Velocity Wavelength Shift High Spectral Resolution Stellar Surface Stellar Disk 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • Dainis Dravins
    • 1
  1. 1.Lund ObservatoryLundSweden

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