Dynamical instability as the cause of the massive outbursts in Eta Carinae and other luminous blue variables

Details Dynamical instability as the cause of the massive outbursts in Eta Carinae and other luminous blue variables Dynamical instability as the cause of the massive outbursts in Eta Carinae and other luminous blue variables

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...408l..85s&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 408, no. 2, p. L85-L88.

Statistics

Computation

61

Blue Stars, Dynamic Stability, Stellar Envelopes, Stellar Evolution, Stellar Mass, Stellar Oscillations, Variable Stars, Hertzsprung-Russell Diagram, Opacity, Stellar Mass Ejection, Stellar Temperature

Scientific paper

A new type of stellar envelope structure has been computationally discovered at very high stellar masses. The outer part of the envelope resembles a nearly detached, diffusely filled shell overlying an ultrahot surface of small radius. This structural anomaly is caused by a large iron bump occurring in the new opacities of Iglesias et al. (1992). The new stellar models with normal metallicity encounter a strong ionization-induced dynamical instability in the outer envelope as they rapidly transit the H-R diagram after the end of central hydrogen burning. Preliminary evolutionary and hydrodynamical calculations successfully mimic the most basic observed properties of Eta Carinae and other very luminous blue variables. The Humphreys-Davidson sloped line in the H-R diagram, however, seems to be unrelated to these variables, and is instead the observed terminus of the main-sequence phase of evolution if convective core overshooting is insignificant.

Affiliated with

Also associated with

No associations

Rating

Dynamical instability as the cause of the massive outbursts in Eta Carinae and other luminous blue variables 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 Dynamical instability as the cause of the massive outbursts in Eta Carinae and other luminous blue variables, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamical instability as the cause of the massive outbursts in Eta Carinae and other luminous blue variables will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1852606