Intriguing detection of (CO)-C-12 molecular emission in a classical Be star

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00547819" target="_blank" >RIV/67985815:_____/21:00547819 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1051/0004-6361/202040143" target="_blank" >https://doi.org/10.1051/0004-6361/202040143</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/202040143" target="_blank" >10.1051/0004-6361/202040143</a>

Result language
angličtina
Original language name
Intriguing detection of (CO)-C-12 molecular emission in a classical Be star
Original language description
Our goal is to study the evolution of the disks around peculiar B stars through the variability of their physical properties and dynamical structure, as well as to set constraints on different models and disk forming mechanisms. Throughout the last decade, we have carried out temporal monitoring of a sample of objects in the near infrared using spectroscopic facilities at the Gemini and Las Campanas Observatories. In the present work, we focus on the classical Be star 12 Vul, for which also optical spectra have been collected quasi-simultaneously.Results. We observed variability in the hydrogen line profiles of 12 Vul, attributed to dissipating and building-up processes of the circumstellar envelope. Also, we found that this Be star presented the (CO)-C-12 band heads in emission in one observation. The emission of this molecule has not been previously reported in a Be star, while it is a common feature among B[e] stars. We obtained parameters to describe the (CO)-C-12 emitting region and propose different scenarios to explain this intriguing emission.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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