RR Tel: Determination of Dust Properties During Minimum Obscuration
the ISO infrared spectra and the SAAO long-term JHKL photometry of RR Tel in the epochs during minimum obscuration are studied in order to construct a circumstellar dust model. the spectral energy distribution in the near- and the mid-IR spectral range (1–15 μm) was obtained for an epoch without the...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2012-06-01
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| Series: | Open Astronomy |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/astro-2017-0366 |
| _version_ | 1819121838288011264 |
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| author | Jurkić T. Kotnik-Karuza D. |
| author_facet | Jurkić T. Kotnik-Karuza D. |
| author_sort | Jurkić T. |
| collection | DOAJ |
| description | the ISO infrared spectra and the SAAO long-term JHKL photometry of RR Tel in the epochs during minimum obscuration are studied in order to construct a circumstellar dust model. the spectral energy distribution in the near- and the mid-IR spectral range (1–15 μm) was obtained for an epoch without the pronounced dust obscuration. the DUSTY code was used to solve the radiative transfer through the dust and to determine the circumstellar dust properties of the inner dust regions around the Mira component. Dust temperature, maximum grain size, dust density distribution, mass-loss rate, terminal wind velocity and optical depth are determined. the spectral energy distribution and the long-term JHKL photometry during an epoch of minimum obscuration show almost unattenuated stellar source and strong dust emission which cannot be explained by a single dust shell model. We propose a two-component model consisting of an optically thin circmustellar dust shell and optically thick dust outside the line of sight in some kind of a flattened geometry, which is responsible for most of the observed dust thermal emission. |
| first_indexed | 2024-12-22T06:42:55Z |
| format | Article |
| id | doaj.art-9d0e04ee8c5243879f07bd9bda6de6c2 |
| institution | Directory Open Access Journal |
| issn | 2543-6376 |
| language | English |
| last_indexed | 2024-12-22T06:42:55Z |
| publishDate | 2012-06-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Open Astronomy |
| spelling | doaj.art-9d0e04ee8c5243879f07bd9bda6de6c22022-12-21T18:35:24ZengDe GruyterOpen Astronomy2543-63762012-06-01211-212313010.1515/astro-2017-0366astro-2017-0366RR Tel: Determination of Dust Properties During Minimum ObscurationJurkić T.0Kotnik-Karuza D.1Physics Department, University of Rijeka, Omladinska 14, HR-51000 Rijeka, CroatiaPhysics Department, University of Rijeka, Omladinska 14, HR-51000 Rijeka, Croatiathe ISO infrared spectra and the SAAO long-term JHKL photometry of RR Tel in the epochs during minimum obscuration are studied in order to construct a circumstellar dust model. the spectral energy distribution in the near- and the mid-IR spectral range (1–15 μm) was obtained for an epoch without the pronounced dust obscuration. the DUSTY code was used to solve the radiative transfer through the dust and to determine the circumstellar dust properties of the inner dust regions around the Mira component. Dust temperature, maximum grain size, dust density distribution, mass-loss rate, terminal wind velocity and optical depth are determined. the spectral energy distribution and the long-term JHKL photometry during an epoch of minimum obscuration show almost unattenuated stellar source and strong dust emission which cannot be explained by a single dust shell model. We propose a two-component model consisting of an optically thin circmustellar dust shell and optically thick dust outside the line of sight in some kind of a flattened geometry, which is responsible for most of the observed dust thermal emission.https://doi.org/10.1515/astro-2017-0366starsbinariessymbioticstarscircumstellar matterstarsagb and post-agbradiative transfer |
| spellingShingle | Jurkić T. Kotnik-Karuza D. RR Tel: Determination of Dust Properties During Minimum Obscuration Open Astronomy stars binaries symbiotic stars circumstellar matter stars agb and post-agb radiative transfer |
| title | RR Tel: Determination of Dust Properties During Minimum Obscuration |
| title_full | RR Tel: Determination of Dust Properties During Minimum Obscuration |
| title_fullStr | RR Tel: Determination of Dust Properties During Minimum Obscuration |
| title_full_unstemmed | RR Tel: Determination of Dust Properties During Minimum Obscuration |
| title_short | RR Tel: Determination of Dust Properties During Minimum Obscuration |
| title_sort | rr tel determination of dust properties during minimum obscuration |
| topic | stars binaries symbiotic stars circumstellar matter stars agb and post-agb radiative transfer |
| url | https://doi.org/10.1515/astro-2017-0366 |
| work_keys_str_mv | AT jurkict rrteldeterminationofdustpropertiesduringminimumobscuration AT kotnikkaruzad rrteldeterminationofdustpropertiesduringminimumobscuration |