Collimated Fast Winds in Wide Binary Progenitors of Planetary Nebulae

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

11 pages + 8 figures, submitted to ApJ

Scientific paper

10.1086/322458

We discuss the formation of planetary nebulae (PNe) having a pair of lobes, or multi-lobes, in their inner region surrounded by an elliptical or spherical shell or halo. We suggest that most of these PNe are formed by wide binary systems, with final orbital periods in the range of 40-10,000 years, such that there is no strong tidal interaction. The outer more spherical structure is formed from the early asymptotic giant branch (AGB) wind. Toward the end of the AGB the mass loss rate increases, and wind velocity possibly decreases, making the conditions for the formation of an accretion disk around the wide companion, more favorable. We assume that the accreting companion blows jets or a collimated fast wind (CFW), which lead to the formation of a pair of lobes in the inner region. In cases of a precessing accretion disk, a multi-lobes structure can be formed. We conduct a population synthesis study of such systems, and find that overall 5-20 percents of all PNe are formed by such binary systems. We also estimate that 20-40 percents of these systems possess observable departure from axisymmetry, e.g., the central star is not in the center of the nebula.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Collimated Fast Winds in Wide Binary Progenitors of Planetary Nebulae 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 Collimated Fast Winds in Wide Binary Progenitors of Planetary Nebulae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Collimated Fast Winds in Wide Binary Progenitors of Planetary Nebulae will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-461295

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.