This year’s European Astronomical Society meeting was held at Cork, Ireland, between 23 and 27 of June (2025). One of the plenary talks was given by Alceste (Bonanos) on June 24th. Entitled “Episodic Mass Loss in Evolved Massive Stars”, she summarized what we have managed to discover and understand during …
S. de Wit, G. Muñoz-Sanchez, G. Maravelias, A.Z. Bonanos, K. Antoniadis, D. García-Álvarez, N. Britavskiy, A. Ruiz, A. Philippopoulou Mass loss in massive stars is crucial to understanding how these stars evolve and explode. Despite increasing evidence indicating its importance, episodic mass loss remains poorly understood. Here we report the …
G. Maravelias, A. Z. Bonanos, K. Antoniadis, G. Munoz-Sanchez, E. Christodoulou, S. de Wit, E. Zapartas, K. Kovlakas, F. Tramper, P. Bonfini, S. Avgousti Mass loss is a key aspect of stellar evolution, particularly in evolved massive stars, yet episodic mass loss remains poorly understood. To investigate this, we need …
S. de Wit, A.Z. Bonanos, K. Antoniadis, E. Zapartas, A. Ruiz, N. Britavskiy, E. Christodoulou, K. De, G. Maravelias, G. Munoz-Sanchez, A. Tsopela Mass loss during the red supergiant (RSG) phase plays a crucial role in the evolution of an intermediate massive star, however, the underlying mechanism remains unknown. We …
Investigating episodic mass loss in evolved massive stars: I. Spectroscopy of dusty massive stars in ten southern galaxies A.Z. Bonanos, F. Tramper, S. de Wit, E. Christodoulou, G. Munoz-Sanchez, K. Antoniadis, S. Athanasiou, G. Maravelias, M. Yang, E. Zapartas The ASSESS project aims to determine the role of episodic mass-loss …
The Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing (IAASARS) of the National Observatory of Athens invites applications for 1 postdoctoral position on modeling evolved massive stars in nearby galaxies in the framework of the ERC consolidator grant titled “Episodic Mass Loss in Massive Stars: Key to Understanding the …
Gonzalo Munoz-Sanchez traveled to Tenerife (Spain) for a week in September (5-9), to participate in the XV scientific meeting of the Spanish Astronomical Society. There he presented his work from the reduction of GTC multi-object spectroscopic data we have obtained for NCG 6822 and IC 10 galaxies. The poster is …
A machine-learning photometric classifier for massive stars in nearby galaxies I. The method Grigoris Maravelias, Alceste Z. Bonanos, Frank Tramper, Stephan de Wit, Ming Yang, Paolo Bonfini Context. Mass loss is a key parameter in the evolution of massive stars. Despite the recent progress in the theoretical understanding of how …
The ASSESS team is joining the IAUS 366 “On the Origin of Outflows in Evolved Stars”, organized virtually from Nov 1-5. Alceste will give an overview (Wednesday, Nov. 3, @12:20 UTC) of the ASSESS project followed by the advance we have achieved over the last years, as first results are …
The Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing (IAASARS) of the National Observatory of Athens invites applications for 1 PhD position on characterizing evolved, dusty massive stars in nearby galaxies. The aim of the project is to determine whether episodic mass loss is a dominant process in the …
