Evidence for Disks around Young Massive Stars from 3D Radiative Transfer Image Modeling

J. Steinacker (1) , R. Chini , M. Nielbock , D. E. A. Nürnberger , V. Hoffmeister , J.-M. Huré (2, 3, 4, 5) , D. Semenov (6, 1) , C. M. Scheyda , R. Siebenmorgen

1 MPIA - Max-Planck-Institut für Astronomie
2 OASU - Observatoire aquitain des sciences de l'univers
3 L3AB - Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux
4 LAB - Laboratoire d'Astrophysique de Bordeaux [Pessac]
5 UB - Université Sciences et Technologies - Bordeaux 1
6 A.N. Severtsov Institute of Ecology and Evolution

While a paradigm for the formation of low-mass stars has been established that is based on accretion of gas and dust through a circumstellar disk, there is no agreed formation scenario for stars with masses greater than 10 solar masses. New evidence for the existence of large-scale flattened structures around young massive stars and compact H II regions is presented and analyzed by radiative transfer models: i) An analysis of the most-extended circumstellar disk known so far including a stability analysis of extended disk structures. ii) A comparison of K-band images of the first hypercompact H II region with a disk candidate and scattered light models. iii) A modeling of the first candidate for a remnant disk around a massive star.

Domaines: Cosmologie et astrophysique extra-galactique [astro-ph.CO]; Astrophysique [astro-ph]

J. Steinacker, R. Chini, M. Nielbock, D. E. A. Nürnberger, V. Hoffmeister, et al.. Evidence for Disks around Young Massive Stars from 3D Radiative Transfer Image Modeling. Massive Star Formation: Observations Confront Theory ASP Conference Series, 2008 Vol. 387, proceedings of the conference held 10-14 September 2007 at Heidelberg Convention Center, Heidelberg, Germany. Edited by Henrik Beuther, Hendrik Linz, and Thomas Henning. San Francisco: Astronomical Society of the Pacific, 2008., p.270, Sep 2007, Heidelberg, Germany. pp.270. ⟨hal-00286488⟩