Czasopismo
2022
|
Vol. 72, No. 1
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69--76
Tytuł artykułu
Autorzy
Wybrane pełne teksty z tego czasopisma
Warianty tytułu
Języki publikacji
Abstrakty
The disk of our Galaxy is filled with clouds of diffuse matter, modifying spectra of distant stars. These clouds are sources of extinction, polarization and of spectral features such as atomic and molecular lines as well as the diffuse interstellar bands (DIBs), still of unknown origin, though likely molecular. Apparently physical parameters of individual translucent clouds are various. We try to provide some constraints on theoretical models of translucent interstellar clouds. It is demonstrated that intensities and profile details of DIBs can be determined using the ESPRESSO spectrograph fed by VLT. This possibility follows its very high resolution and signal-to-noise ratio, necessary to analyze atomic and molecular features, detectable in spectra of OB-stars, and originated in single (thus - likely optically thin) interstellar clouds. Our set of five high resolution (λ/δλ =140 000) ESPRESSO spectra of hot, reddened stars allows us to analyze profiles of some DIBs. It is argued that more high quality spectra from ESPRESSO are necessary to identify the DIB cariers.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
69--76
Opis fizyczny
Bibliogr. 14 poz., tab., wykr.
Twórcy
autor
- Materials Spectroscopy Laboratory, University of Rzeszów, Pigonia 1 Street, 35-310 Rzeszów, Poland
autor
- ICAMER Observatory, NAS of Ukraine, Acad. Zabolotnoho 27 Street., 03143 , Kyiv, Ukraine
Bibliografia
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Uwagi
Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024)
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-247c01df-64d8-4c0c-9959-61e188d00bf8