Infrared Observations of the Asymmetric Mass Loss of an AGB Star

Abstract

We report on the observations of the circumstellar envelope of the AGB star II Lup in the near- and mid-infrared with the use of direct imaging and interferometric techniques. Our findings indicate that the circumstellar envelope is not spherically symmetric and that the majority of the emission originates within 0.5 arcsec from the star.

Keywords

• infrared interferometry
• AGB stars
• stellar evolution
• observations
• aperture masking