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 …
X-Shooting ULLYSES: massive stars at low metallicityI. Project Description Jorick S. Vink, A. Mehner, P. A. Crowther, A. Fullerton, M. Garcia, F. Martins, N. Morrell, L.M. Oskinova, N. St-Louis, A. ud-Doula, A.A.C. Sander, H. Sana, J.-C. Bouret, B. Kubátová, P. Marchant, L.P. Martins, A. Wofford, J. Th. van Loon, O. …
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 …
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), …
The 2023 version of the VFTS meeting was held in Max Planck Institute for Astrophysics in Garching for three days in March (27-29). Like last year’s meeting the ASSESS team was there to discuss our recent findings. This time though the representation was broader with more members of the group …
About a year ago Stathis Athanasiou joined our team to work on cross-matching sources from the Hubble Space Telescope to those detected from the ASSESS observations. After a whole year of efforts he managed to complete his thesis and defend it successfully ! Details of the thesisTitle: Mass-loss rates of …
For our observing needs we require the largest and the most modern facilities in both hemispheres (to obtain data for both our Southern and Northern galaxies in our sample). For this reason we have managed to achieve time at both GTC and ESO telescopes. For the period P111 of ESO …
Environments of evolved massive stars: evidence for episodic mass ejections M. Kraus, L. S. Cidale, M. L. Arias, A. F. Torres, I. Kolka, G. Maravelias, D. H. Nickeler, W. Glatzel and T. Liimets The post-main sequence evolutionary path of massive stars comprises various transition phases, in which the stars shed …
We have a successful record of observing proposals with GTC to observe a number of Northern Galaxies for the ASSESS project. Although we got time in 2022A semester (~25 hours with OSIRIS) we did not manage to obtain the observations. The instrument was offered on a shared risk mode as …
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