English

Disk formation in oblate B[e] stars

Solar and Stellar Astrophysics 2016-10-14 v1

Abstract

We investigate the possible role of line-driven winds in the circumstellar envelope in B[e] stars, mainly the role of the Ω\Omega-slow wind solution, which is characterized by a slower terminal velocity and higher mass-loss rate, in comparison with the standard (m-CAK) wind solution. In this work, we assume two scenarios: 1) a spherically symmetric star and 2) a scenario that considers the oblate shape, considering only the oblate correction factor. For certain values of the line force parameters (according to previous works), we obtain in both scenarios a density contrast 102\gtrsim10^{2} between equatorial and polar densities, characterized for a fast polar wind and a slow and denser wind when the Ω\Omega-slow wind solution is obtained. All this properties are enhanced when the oblate correction factor is included in our calculations.

Keywords

Cite

@article{arxiv.1610.04208,
  title  = {Disk formation in oblate B[e] stars},
  author = {I. Araya and C. Arcos and M. Curé},
  journal= {arXiv preprint arXiv:1610.04208},
  year   = {2016}
}

Comments

6 pages, 3 figures, to appear in the proceedings of the conference "The B[e] Phenomenon: Forty Years of Studies" (Prague, Czech Republic, 27 June - 1 July 2016)

R2 v1 2026-06-22T16:20:08.050Z