Intermediate-Mass Mergers: A New Scenario for Several FS CMa Stars
Fuente:
arXiv
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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| Soggetti: | |
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| _version_ | 1866913026901278720 |
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| author | Korcakova, Daniela Dvorakova, Nela Lozano, Iris Bermejo Wade, Gregg A. Basurto, Alicia Moranchel Kroupa, Pavel Chametla, Raul Ortega Folsom, Colin Peter Juhas, Ondrej |
| author_facet | Korcakova, Daniela Dvorakova, Nela Lozano, Iris Bermejo Wade, Gregg A. Basurto, Alicia Moranchel Kroupa, Pavel Chametla, Raul Ortega Folsom, Colin Peter Juhas, Ondrej |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_11907 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Intermediate-Mass Mergers: A New Scenario for Several FS CMa Stars Korcakova, Daniela Dvorakova, Nela Lozano, Iris Bermejo Wade, Gregg A. Basurto, Alicia Moranchel Kroupa, Pavel Chametla, Raul Ortega Folsom, Colin Peter Juhas, Ondrej Solar and Stellar Astrophysics 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. |
| title | Intermediate-Mass Mergers: A New Scenario for Several FS CMa Stars |
| topic | Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2604.11907 |