Independent Signs of Lower Mass-Loss Rates for O-Type Stars

Details Independent Signs of Lower Mass-Loss Rates for O-Type Stars Independent Signs of Lower Mass-Loss Rates for O-Type Stars

2007-10-18

arxiv.org/abs/0710.3430v1

Astronomy and Astrophysics

Astrophysics

in proceedings "Clumping in Hot Star Winds"

Scientific paper

I discuss observational evidence -- independent of the direct spectral diagnostics of stellar winds themselves -- suggesting that mass-loss rates for O stars need to be revised downward by roughly a factor of three or more, in line with recent observed mass-loss rates for clumped winds. These independent constraints include the large observed mass-loss rates in LBV eruptions, the large masses of evolved massive stars like LBVs and WNH stars, WR stars in lower metallicity environments, observed rotation rates of massive stars at different metallicity, supernovae that seem to defy expectations of high mass-loss rates in stellar evolution, and other clues. I pay particular attention to the role of feedback that would result from higher mass-loss rates, driving the star to the Eddington limit too particular attention to the role of feedback that would result from higher mass-loss rates, driving the star to the Eddington limit too soon, and therefore making higher rates appear highly implausible. Some of these arguments by themselves may have more than one interpretation, but together they paint a consistent picture that steady line-driven winds of O-type stars have lower mass-loss rates and are significantly clumped.

Affiliated with

Also associated with

No associations

Rating

Independent Signs of Lower Mass-Loss Rates for O-Type Stars 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 Independent Signs of Lower Mass-Loss Rates for O-Type Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Independent Signs of Lower Mass-Loss Rates for O-Type Stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-460699