Large granulation cells on the surface of the giant star π1 Gruis.

Claudia Paladini,Fabien Baron,Alain Jorissen,J.-B. Le Bouquin,Bernd Freytag,S. Van Eck,Markus Wittkowski,J. Hron,Andrea Chiavassa,J.-P. Berger,Christos Siopis,A. Mayer,G. Sadowski,K. Kravchenko,S. Shetye,Franz Kerschbaum,J. Kluska,Sofia Ramstedt

Large granulation cells on the surface of the giant star π1 Gruis.

2018

Claudia Paladini
Fabien Baron
Alain Jorissen
J.-B. Le Bouquin
Bernd Freytag
S. Van Eck
Markus Wittkowski
J. Hron
Andrea Chiavassa
J.-P. Berger
Christos Siopis
A. Mayer
G. Sadowski
K. Kravchenko
S. Shetye
Franz Kerschbaum
J. Kluska
Sofia Ramstedt

Interferometric images of the surface of the giant star π1 Gruis reveal few but large convective cells, consistent with existing models of stellar surface convection.

Keywords:

Giant star
Astronomy
Granulation
Convection cell
Convection
Physics
Stars
Surface gravity
Astrophysics
Supergiant
Effective temperature
Atmosphere

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