Radio emission from the massive stars in Westerlund 1

Details Radio emission from the massive stars in Westerlund 1 Radio emission from the massive stars in Westerlund 1

2010-11-02

arxiv.org/abs/1011.0775v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

5 pages, 2 figures; to appear in "The multi-wavelength view of hot, massive stars - 39th Liege Int. Astroph. Coll., 12-16 July

Scientific paper

The diverse massive stellar population in the young massive cluster Westerlund 1 (Wd~1) provides an ideal laboratory to observe and constrain mass-loss processes throughout the transitional phase of massive star evolution. A set of high sensitivity radio observations of Wd~1 leads to the detection of 18 cluster members, a sample dominated by cool hypergiants, but with detections among hotter OB supergiants and WR stars. Here the diverse radio properties of the detected sample are briefly described. The mass-loss rates of the detected objects are surprisingly similar across the whole transitional phase of massive star evolution, at ~10^-5 solar masses per year. Such as rate is insufficient to strip away the H-rich mantle in a massive star lifetime, unless the stars go through a period of enhanced mass-loss. The radio luminous star W9 provides an example of such an object, with evidence for two eras of mass-loss with rates of ~10^-4 solar masses per year.

Affiliated with

Also associated with

No associations

Rating

Radio emission from the massive stars in Westerlund 1 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Radio emission from the massive stars in Westerlund 1, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radio emission from the massive stars in Westerlund 1 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-602129