7 citations · 14 across the 7 of their papers we have counts for
8 papers · 1 filter
Central stars of newly discovered infrared nebulae: eruptive Be stars PY Gem and HD253659
Olga Maryeva, Julieta Sánchez Arias, Sergey Karpov +3
The presence of a nebula around massive hot stars often works as an indicator that the object is either in an advanced evolutionary stage or a rare product of close binary interact…
Gravity modes and potential evidence for Rossby Waves in late O-type supergiants
Lydia S. Cidale, Alejandra Christen, Aldana Alberici Adam +6
The properties of O-type supergiant stars remain largely unexplored. By analysing their light variations, we can unravel underlying physical phenomena, such as binarity, stellar pu…
An Halpha survey of infrared bow-shocks around OB-type stars
Kuljeet Singh Saddal, Michaela Kraus, Dieter H. Nickeler +3
Bow shocks (BSs) around massive stars are commonly identified in mid-infrared (MIR) surveys. In contrast, systematic optical investigations of these structures remain scarce with o…
Near-infrared characterization of evolved massive stars in M31 and M33
Michaela Kraus, Maria Laura Arias, Michalis Kourniotis +3
The upper region of the Hertzsprung-Russell diagram is populated by massive stars in a diversity of evolutionary stages, and the classification of these stars is often based on obs…
Variability of Galactic blue supergiants observed with TESS
Michalis Kourniotis, Lydia S. Cidale, Michaela Kraus +2
Blue supergiants (BSGs) mediate between the main sequence and the late stages of massive stars, which makes them valuable for assessing the physics that drives the stars across the…
HD 144812: A transition-phase massive star in a binary system
Michalis Kourniotis, Michaela Kraus, Maria Laura Arias +1
In this Letter, we shed light on the evolutionary phase of HD 144812, a Galactic yellow supergiant showing infrared excess that is typically expected for evolved stars undergoing e…
Follow-Up of Extended Shells around B[e] Stars
T. Liimets, M. Kraus, A. Moiseev +3
B[e] stars are massive B type emission line stars in different evolutionary stages ranging from pre-main sequence to post-main sequence. Due to their mass loss and ejection events…
Intriguing detection of CO molecular emission in a classical Be star
Y. R. Cochetti, M. L. Arias, M. Kraus +4
In the group of B stars with spectroscopic peculiarities, we can find the Be and the B[e] stars. The Be stars are early-type rapid rotators that present, as their principal charact…