about Grigoris Maravelias
Tag: <span>ob stars</span>

Tag: ob stars

New paper: X-Shooting ULLYSES: massive stars at low metallicity I. Project Description

It was back in 2020 during the pandemic that the first call for the XShootU collaboration was sent. I had really little idea of what would follow, but I fount it definitely motivating to participate. Therefore I volunteer to help with the data reduction. After 2.5 years we are getting …

New paper: A new automated tool for the spectral classification of OB stars

This paper is a result of an attempt that started way back during my PhD thesis actually. back then in early 2010’s we started investigating a way to automate the spectral classification of Be X-ray binaries. The problem with these sources is that due to the strong emission in the …