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http://elar.urfu.ru/handle/10995/51247
Название: | On the massive young stellar object AFGL 4176 High-spatial-resolution multi-wavelength observations and modeling |
Авторы: | Boley, P. A. Linz, H. Boekel, R. van Bouwman, J. Henning, T. Sobolev, A. M. |
Дата публикации: | 2012 |
Издатель: | EDP Sciences |
Библиографическое описание: | On the massive young stellar object AFGL 4176 High-spatial-resolution multi-wavelength observations and modeling / P. A. Boley, H. Linz, R. van Boekel, J. Bouwman, T. Henning, A. M. Sobolev // Astronomy and Astrophysics. — 2012. — Vol. 547. |
Аннотация: | Deeply embedded and at distances of several kiloparsecs, massive young stellar objects (MYSOs) present numerous challenges for observation and study. In this work, we present spatially-resolved observations of one MYSO, AFGL 4176, together with survey and literature data, ranging from interferometric observations with VLTI/MIDI in the mid-infrared, to single-dish Herschel measurements in the far-infrared, and sub-millimeter data from APEX. We consider this spatially-resolved, multi-wavelength data set in terms of both radiative transfer and geometric models. We find that the observations are well described by one-dimensional models overall, but there are also substantial deviations from spherical symmetry at scales of tens to hundreds of astronomical units, which are revealed by the mid-infrared interferometric measurements. We use a multiple-component, geometric modeling approach to explain the mid-infrared emission on scales of tens to hundreds of astronomical units, and find the MIDI measurements are well described by a model consisting of a one-dimensional Gaussian halo and an inclined (θ = 60°) circumstellar disk extending out to several hundred astronomical units along a position angle of 160°. Finally, we compare our results both with previous models of this source, and with those of other MYSOs, and discuss the present situation with mid-infrared interferometric observations of massive stars. © 2012 ESO. |
Ключевые слова: | RADIATIVE TRANSFER STARS: FORMATION STARS: INDIVIDUAL: AFGL 4176 TECHNIQUES: HIGH ANGULAR RESOLUTION TECHNIQUES: INTERFEROMETRIC |
URI: | http://elar.urfu.ru/handle/10995/51247 |
Идентификатор SCOPUS: | 84868628372 |
Идентификатор WOS: | 000311031700088 |
Идентификатор PURE: | 1071439 |
ISSN: | 0004-6361 1432-0746 |
DOI: | 10.1051/0004-6361/201218905 |
Располагается в коллекциях: | Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC |
Файлы этого ресурса:
Файл | Описание | Размер | Формат | |
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10.1051-0004-6361201218905.pdf | 1,08 MB | Adobe PDF | Просмотреть/Открыть |
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