Intermediate-Mass Mergers: A New Scenario for Several FS CMa Stars
We summarise the properties and nature of a peculiar group of B-type stars called FS CMa stars. These stars show the B[e] phenomenon, i.e., their spectra exhibit both forbidden emission lines and infrared excess. Such properties point to an extended circumstellar gas and dust component. Although the phenomenon has been explained in most B[e] stars, the origin and nature of FS CMa stars is disputed. Here, we focus on the merger hypothesis, for which evidence has recently been discovered.
Authors
- Nela Dvořáková
- Alicia Moranchel Basurto
- C. P. Folsom (ORCID: https://orcid.org/0000-0002-9023-7890)
- Raúl O. Chametla (ORCID: https://orcid.org/0000-0002-4327-7857)
- Pavel Kroupa (ORCID: https://orcid.org/0000-0002-7301-3377)
- G. A. Wade (ORCID: https://orcid.org/0000-0002-1854-0131)
- D. Korčáková (ORCID: https://orcid.org/0000-0002-5859-7220)
- I. Lozano (ORCID: https://orcid.org/0009-0005-9588-624X)
- Ondrej Juhás
Institutions
- University of Bonn (DE)
- Queen's University (CA)
- Charles University (CZ)
- Czech Academy of Sciences, Astronomical Institute (CZ)
- Tartu Observatory (EE)
- Royal Military College of Canada (CA)
- University of Tartu (EE)
Publication Details
- Journal
- Galaxies
- Published
- 2025-04-22
- DOI
- https://doi.org/10.3390/galaxies13030046
- Citations
- 1
- Primary Topic
- Stellar, planetary, and galactic studies
- Type
- article
- Field-Weighted Citation Impact
- 1.15
Funders
- Grantová Agentura České Republiky