Portal de Periódicos da CAPES

(Sub)stellar companions shape the winds of evolved stars

2020; American Association for the Advancement of Science; Volume: 369; Issue: 6510 Linguagem: Inglês

10.1126/science.abb1229

1095-9203

L. Decin, M. Montargès, A. M. S. Richards, C. A. Gottlieb, W. Homan, Iain McDonald, I. El Mellah, T. Danilovich, S. H. J. Wallström, A. A. Zijlstra, A. Baudry, J. Bolte, Emily Cannon, E. De Beck, Frederik De Ceuster, A. de Koter, J. De Ridder, S. Etoka, D. Gobrecht, M. D. Gray, F. Herpin, M. Jeste, E. Lagadec, P. Kervella, T. Khouri, K. M. Menten, T. J. Millar, H. S. P. Müller, J. M. C. Plane, R. Sahai, H. Sana, M. Van de Sande, L. B. F. M. Waters, K. T. Wong, J. Yates,

Astro and Planetary Science

Complex stellar winds from evolved stars Stars less than eight times the mass of the Sun end their lives as planetary nebulae, structures of ionized gas thrown off by the star and heated by the exposed stellar core. Planetary nebulae are often bipolar in shape or contain complex morphological features such as rings or spirals. Decin et al. observed the stellar winds of 14 stars during their asymptotic giant branch (AGB) phase of stellar evolution, which immediately precedes the planetary nebula phase. They found morphologies in the AGB winds similar to planetary nebulae and demonstrated that they are produced by the influence of a binary companion on the AGB wind. Science , this issue p. 1497