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Diagnosys of the accretion process in MYSOs through molecular and ionic outflows

Grant number: 13/11680-2
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): December 01, 2013
Effective date (End): November 01, 2017
Field of knowledge:Physical Sciences and Mathematics - Astronomy - Stellar Astrophysics
Principal Investigator:Augusto Damineli Neto
Grantee:Felipe Donizeti Teston Navarete
Host Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated scholarship(s):14/20522-4 - Massive molecular outflows, BE.EP.DR

Abstract

We plan to test two scenarios of massive star formation -- disc accretion or coalescence of low mass stars -- from observations of massive young stellar objects (MYSOs). The first step was to identify those high mass objects ($> 8\,$M$_\odot$) that are associated with bipolar outflows. That was completed with a complete all-sky survey, which is the Master's project of the candidate. The second step, proposed on this Doctorate's project, consists in measuring the parameters of the jets on their launching points with enough spartial and spectral resolution to decide if they are originated by the same type of phenomena that occurs on low mass conterparts (magnetized disc coupling) or if they are launched by winds produced by the accreting discs due to the radiation pressure of the central star.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
NAVARETE, F.; LEURINI, S.; GIANNETTI, A.; WYROWSKI, F.; URQUHART, J. S.; KOENIG, C.; CSENGERI, T.; GUESTEN, R.; DAMINELI, A.; MENTEN, K. M.. ATLASGAL-selected massive clumps in the inner Galaxy VII. Characterisation of mid-J CO emission. Astronomy & Astrophysics, v. 622, . (13/11680-2, 14/20522-4, 17/18191-8)
DAMINELI, A.; ALMEIDA, L. A.; BLUM, R. D.; DAMINELI, D. S. C.; NAVARETE, F.; RUBINHO, M. S.; TEODORO, M.. Extinction law in the range 0.4-4.8 mu m and the 8620 angstrom DIB towards the stellar cluster Westerlund 1. Monthly Notices of the Royal Astronomical Society, v. 463, n. 3, p. 2653-2666, . (13/11680-2, 12/09716-6, 13/18245-0, 11/51680-6)
NAVARETE, F.; LEURINI, S.; GIANNETTI, A.; WYROWSKI, F.; URQUHART, J. S.; KOENIG, C.; CSENGERI, T.; GUESTEN, R.; DAMINELI, A.; MENTEN, K. M.. ATLASGAL-selected massive clumps in the inner Galaxy VII. Characterisation of mid-J CO emission. ASTRONOMY & ASTROPHYSICS, v. 622, p. 45-pg., . (13/11680-2, 14/20522-4, 17/18191-8)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
NAVARETE, Felipe Donizeti Teston. The Formation of High-Mass Stars: from High-Mass Clumps to Accretion Discs and Molecular Outflows. 2018. Doctoral Thesis - Universidade de São Paulo (USP). Instituto Astronômico e Geofísico (IAG/SBD) São Paulo.

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