Inhomogeneities in molecular layers of Mira atmospheres???

Authors: M. Wittkowski, D. A. Boboltz, M. Ireland, I. Karovicova, K. Ohnaka, M. Scholz, F. van Wyk, P. Whitelock, P. R. Wood and A. A. Zijlstra.<br />Astronomy & Astrophysics Vol. 532 , page L7<br />Published online: 21/07/2011<br />
Keywords:
techniques: interferometric ; techniques: photometric ; stars: AGB and post-AGB ; stars: atmospheres ; stars: fundamental parameters ; stars: mass-loss.

Strong chaos induced by close encounters with Ceres and Vesta

Authors: J. Laskar, M. Gastineau, J.-B. Delisle, A. Farrés and A. Fienga.<br />Astronomy & Astrophysics Vol. 532 , page L4<br />Published online: 14/07/2011<br />
Keywords:
chaos ; methods: numerical ; celestial mechanics ; planets and satellites: dynamical evolution and stability ; minor planets, asteroids: individual: Ceres ; minor planets, asteroids: individual: Vesta.

The close circumstellar environment of Betelgeuse

Authors: P. Kervella, G. Perrin, A. Chiavassa, S. T. Ridgway, J. Cami, X. Haubois and T. Verhoelst.<br />Astronomy & Astrophysics Vol. 531 , page A117<br />Published online: 23/06/2011<br />
Keywords:
stars: individual: Betelgeuse ; stars: imaging ; supergiants ; circumstellar matter ; stars: mass-loss ; infrared: stars.