Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/51247
Title: On the massive young stellar object AFGL 4176 High-spatial-resolution multi-wavelength observations and modeling
Authors: Boley, P. A.
Linz, H.
Boekel, R. van
Bouwman, J.
Henning, T.
Sobolev, A. M.
Issue Date: 2012
Publisher: EDP Sciences
Citation: 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.
Abstract: 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.
Keywords: RADIATIVE TRANSFER
STARS: FORMATION
STARS: INDIVIDUAL: AFGL 4176
TECHNIQUES: HIGH ANGULAR RESOLUTION
TECHNIQUES: INTERFEROMETRIC
URI: http://hdl.handle.net/10995/51247
https://elar.urfu.ru/handle/10995/51247
SCOPUS ID: 84868628372
WOS ID: 000311031700088
PURE ID: 1071439
ISSN: 0004-6361
1432-0746
DOI: 10.1051/0004-6361/201218905
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

Files in This Item:
File Description SizeFormat 
10.1051-0004-6361201218905.pdf1,08 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.