3 papers
astro-ph.SR2019
The HST Key Project galaxies NGC 1326A, NGC 1425 and NGC 4548: New variable stars and massive star population
Z. T. Spetsieri, A. Z. Bonanos, M. Yang +2
Studies on the massive star population in galaxies beyond the Local Group are the key to understand the link between their numbers and modes of star formation in different environm…
astro-ph.SR2018
On the evolutionary state of massive stars in transition phases in M33
M. Kourniotis, M. Kraus, M. L. Arias +2
The advanced stages of several high-mass stars are characterized by episodic mass loss shed during phases of instability. Key for assigning these stars a proper evolutionary state…
astro-ph.SR2018
The massive star population of the Virgo Cluster galaxy NGC 4535
Z. T. Spetsieri, A. Z. Bonanos, M. Kourniotis +10
We analyzed the massive star population of the Virgo Cluster galaxy NGC 4535 using archival Hubble Space Telescope Wide Field Planetary Camera 2 images in filters F555W and F814W,…