37 citations · 37 across the 6 of their papers we have counts for
6 papers
Characterization of the variability of the blue supergiant HD 14134
Suryani Guha, Michaela Kraus, Julieta P. Sanchez Arias +2
The post-main sequence (MS) evolution of massive stars encompasses phases in which the stars display high variability. One such class of objects are the blue supergiants which may…
On the origin of variability in Cygni variable Ori (HD 37128) using TESS observations and modelling
Subharthi Dasgupta, Sugyan Parida, Abhay Pratap Yadav +2
Ori (HD 37128) is an Cygni variable characterized by irregular and small amplitude variations. From TESS observations, we find the presence of stochastic low-frequency vari…
Instabilities in the Yellow Hypergiant domain
Wolfgang Glatzel, Michaela Kraus
Yellow Hypergiants (YHGs) are massive stars that are commonly interpreted to be in a post-red supergiant evolutionary state. These objects can undergo outbursts on timescales of de…
Rings, shells, and arc structures around B[e] supergiants: I. Classical tools of non-linear hydrodynamics
Dieter H. Nickeler, Michaela Kraus
Structures in circumstellar matter reflect both fast processes and quasi-equilibrium states. A geometrical diversity of emitting circumstellar matter is observed around evolved mas…
On the stability and pulsation in models of B[e] star MWC 137
Sugyan Parida, Abhay Pratap Yadav, Michaela Kraus +3
B[e] type stars are characterised by strong emission lines, photometric spectroscopic variabilities and unsteady mass-loss rates. MWC 137 is a galactic B[e] type star situated…
Interplay between pulsations and mass loss in the blue supergiant 55 Cygnus = HD 198478
M. Kraus, M. Haucke, L. S. Cidale +14
Blue supergiant stars are known to display photometric and spectroscopic variability that is suggested to be linked to stellar pulsations. Pulsational activity in massive stars str…