Hans Olofsson

Professor, Department of Space, Earth and Environment, Astronomy and Plasma Physics, Galactic Astronomy

My research focusses on the final evolution of solar-type stars on and beyond the asymptotic giant branch (AGB). These stars are important ingredients in the life cycle of galaxies, maybe even in the early universe. The stellar mass loss is the key process, and the stellar winds provide the dust and molecular line emission which lies at the base of the analysis. Of particular importance are the compositions of the stellar winds, i.e., atomic and molecular abundances, isotope ratios, and dust species. Finally, the dramatic changes in mass-loss properties and chemistry as the object leaves the AGB and evolves towards the planetary nebula stage are part of the research.
​To see which research projects Hans Olofsson participates in, please visit the database Chalmers research.
  • ​A Study of Circumstellar Envelopes around Bright Carbon Stars, I. Structure, kinematics, and mass loss rate; Astrophysical Journal Supplement Series, vol. 87, p. 267, 1993
  • A High-resolution Study of Episodic Mass Loss from the Carbon Star TT Cygni; Astronomy and Astrophysics, vol. 353, p. 583, 2000
  • Models of Circumstellar Molecular Radio Line Emission: Mass loss rates for a sample of bright carbon stars; Astronomy and Astrophysics, vol. 368, p. 969, 2001

Published: Mon 14 Oct 2013. Modified: Mon 21 Aug 2017