Zapartas et al. 2024: The effect of mass loss in models of red supergiants in the Small Magellanic Cloud

E. Zapartas, S. de Wit, K. Antoniadis, G. Muñoz-Sanchez, D. Souropanis, A.Z. Bonanos, G. Maravelias, K. Kovlakas, M.U. Kruckow, T. Fragos, J.J. Andrews, S.S. Bavera, M. Briel, S. Gossage, E. Kasdagli, K.A. Rocha, M. Sun, P.M. Srivastava, Z. Xing The rate and mechanism of mass loss of red supergiants (RSGs) …

Antoniadis et al. 2024: Establishing a mass-loss rate relation for red supergiants in the Large Magellanic Cloud

K. Antoniadis, A.Z. Bonanos, S. de Wit, E. Zapartas, G. Munoz-Sanchez, G. Maravelias High mass-loss rates of red supergiants (RSGs) drastically affect their evolution and final fate, yet their mass-loss mechanism remains poorly understood. Various empirical prescriptions scaled with luminosity have been derived in the literature, yielding results with a …

Bonanos et al. 2023: Introducing the ASSESS project: Episodic Mass Loss in Evolved Massive Stars – Key to Understanding the Explosive Early Universe

Introducing the ASSESS project: Episodic Mass Loss in Evolved Massive Stars – Key to Understanding the Explosive Early Universe A.Z. Bonanos, G. Maravelias, M. Yang, F. Tramper, S. de Wit, E. Zapartas, K. Antoniadis, E. Christodoulou, G. Munoz-Sanchez Episodic mass loss is not understood theoretically, neither accounted for in state-of-the-art …

ESO time granted for P112

Another successful ESO proposal! We managed to get about 1.5 nights for cycle P112, and in visitor mode! So, now that we are free to travel, we will have the PhD students Gonzalo Munoz-Sanchez (PI of the project) and Evangelia Christodoulou to travel to Paranal and observe from there. The …

Maravelias et al. 2023: Discovering New B[e] Supergiants and Candidate Luminous Blue Variables in Nearby Galaxies

Discovering New B[e] Supergiants and Candidate Luminous Blue Variables in Nearby Galaxies Grigoris Maravelias, Stephan de Wit, Alceste Z. Bonanos, Frank Tramper, Gonzalo Munoz-Sanchez and Evangelia Christodoulou Mass loss is one of the key parameters that determine stellar evolution. Despite the progress we have achieved over the last decades we …

Yang et al. 2023: Evolved Massive Stars at Low-metallicity V. Mass-Loss Rate of Red Supergiant Stars in the Small Magellanic Cloud

Evolved Massive Stars at Low-metallicity V. Mass-Loss Rate of Red Supergiant Stars in the Small Magellanic Cloud Ming Yang (杨明), Alceste Z. Bonanos, Biwei Jiang (姜碧沩), Emmanouil Zapartas, Jian Gao (高健), Yi Ren(任逸), Man I Lam (林敏仪), Tianding Wang (王天丁), Grigoris Maravelias, Panagiotis Gavras, Shu Wang (王舒), Xiaodian Chen (陈孝钿), …

Maravelias et al. 2022: A machine-learning photometric classifier for massive stars in nearby galaxies I. The method

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 …

Maravelias & Kraus 2022: Bouncing against the Yellow Void — exploring the outbursts of ρ Cas from visual observations

Bouncing against the Yellow Void — exploring the outbursts of ρ Cas from visual observations Grigoris Maravelias and Michaela Kraus Massive stars are rare but of paramount importance for their immediate environment and their host galaxies. They lose mass from their birth through strong stellar winds up to their spectacular …