Binary Progenitor Models for Bipolar Planetary Nebulae

Details Binary Progenitor Models for Bipolar Planetary Nebulae Binary Progenitor Models for Bipolar Planetary Nebulae

Mar 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...496..833s&link_type=abstract

Astrophysical Journal v.496, p.833

Astronomy and Astrophysics

Astronomy

70

Ism: General, Ism: Planetary Nebulae: General, Stars: Agb And Post-Agb, Stars: Binaries: Close, Stars: Mass Loss

Scientific paper

We propose an explanation for the positive correlation of bipolar planetary nebulae with massive progenitors in the paradigm of binary system progenitors. We list 10 critical observations, and argue that single-star models for the formation of bipolar planetary nebulae encounter difficulties complying with these observations. On the other hand, binary system progenitors can naturally explain these key observations, and in addition explain the rich varieties of structures possessed by bipolar planetary nebulae. Based on three of the critical observations, and on previous works by Corradi and Schwarz and by Morris, we postulate that the progenitors of bipolar planetary nebulae are binary stellar systems in which the secondary diverts a substantial fraction of the mass lost by the asymptotic giant branch (AGB) primary, but the systems avoid the common envelope phase for a large fraction of the interaction time. The positive correlation of bipolar planetary nebulae with massive progenitors, M >~ 2 M&sun;, is attributed to the larger ratios of red giant branch (RGB) to AGB radii which low-mass stars attain, compared with massive stars. These larger radii on the RGB cause most stellar binary companions, which potentially could have formed bipolar planetary nebulae if the primary had been on the AGB, to interact with low-mass primaries already on the RGB. This scenario predicts that the central stars of most bipolar planetary nebulae are in binary systems having orbital periods in the range of a few days to few times 10 yr.

Affiliated with

Also associated with

No associations

Rating

Binary Progenitor Models for Bipolar 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 Binary Progenitor Models for Bipolar Planetary Nebulae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Binary Progenitor Models for Bipolar Planetary Nebulae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1657319