Modeling of molecules in circumstellar media

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00553613" target="_blank" >RIV/67985815:_____/21:00553613 - isvavai.cz</a>
Result on the web
<a href="http://astronomiaargentina.fcaglp.unlp.edu.ar/uploads/docs/baaa62.pdf" target="_blank" >http://astronomiaargentina.fcaglp.unlp.edu.ar/uploads/docs/baaa62.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Modeling of molecules in circumstellar media
Original language description
B[e] stars are characterized by having spectral lines in emission, both of forbiden and allowed transitions, produced in the disk that surrounds the star. The temperature and density conditions in these disks allow the formation of molecules, whose presence is manifested in the observation of molecular bands in emission. In this work we present the code that we have developed which allows us to model the emission bands of different diatomic molecules, such as CO, SiO, CS, SiS, NH, etc. The program takes into account the different isotopes that make up the molecules, since these significantly affect the bands. With this program we can obtain the combined spectra of molecules composed of different isotopes and the superposition of different molecules. Comparing with the observations, we can use these theoretical spectra not only to determine the presence of the molecules, but also other parameters, such as the temperature and density of the regions of formation of the molecules in the disk, the velocity of rotation, and the region of the disk where the molecules are found. We can also use them to determine the abundance ratio of the different isotopes of a molecule, which can be used to determine the evolutionary stage of the star.nn
Czech name
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Czech description
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Project
<a href="/en/project/GA17-02337S" target="_blank" >GA17-02337S: Molecules in the environments of evolved massive stars</a><br>
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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