Cool Environments Around Evolved Massive Stars as Seen by AKARI

Details Cool Environments Around Evolved Massive Stars as Seen by AKARI Cool Environments Around Evolved Massive Stars as Seen by AKARI

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..418..443m&link_type=abstract

AKARI, a Light to Illuminate the Misty Universe ASP Conference Series, Vol. 418, proceedings of a conference held 16-19 February

Astronomy and Astrophysics

Astronomy

Scientific paper

As very massive stars evolve, they are expected to pass through several evolutionary stages towards their expected end as supernovae. The precise evolutionary path of massive stars of various masses above 25 solar masses is still a topic of debate. An excellent probe of the evolution of evolved massive stars, such as Wolf-Rayet stars, is their circumstellar environment. In particular, knowledge of the amount of mass loss, timescales for mass loss and likely prior evolutionary status of these stars potentially leave their imprint on the surrounding gas. In these preliminary results, we present AKARI FIS observations of the environments of Wolf-Rayet stars which attempt to find the cool and massive component of the expelled material from earlier mass-loss phases.

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