46 citations · 473 across the 27 of their papers we have counts for
27 papers
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…
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…
New Insight into the FS CMa System MWC 645 from Near-Infrared and Optical Spectroscopy
Andrea F. Torres, María L. Arias, Michaela Kraus +2
The B[e] phenomenon is manifested by a heterogeneous group of stars surrounded by gaseous and dusty circumstellar envelopes with similar physical conditions. Among these stars, the…
Dense Molecular Environments of B[e] Supergiants and Yellow Hypergiants
Michaela Kraus, Michalis Kourniotis, Maria Laura Arias +2
Massive stars expel large amounts of mass during their late evolutionary phases. We aim to unveil the physical conditions within the warm molecular environments of B[e] supergiants…
Possible discovery of Calvera's supernova remnant
M. Arias, A. Botteon, C. G. Bassa +13
We report the discovery of a ring of low surface brightness radio emission around the Calvera pulsar, a high Galactic latitude, isolated neutron star, in the LOFAR Two-metre Sky Su…
Simultaneous J-, H-, K- and L-band spectroscopic observations of galactic Be stars. I. IR atlas
Y. R. Cochetti, M. L. Arias, L. S. Cidale +2
It is already accepted that Be stars are surrounded by circumstellar envelopes, which are mostly compatible with a disc geometry in Keplerian rotation. We aim to obtain a more comp…