High-mass star formation: the mass of the central sources and the physics of the accretion process

• Grant number: 17/18191-8
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: March 01, 2018
• End date: November 19, 2021
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Astrophysics of the Interstellar Medium
• 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 research grant: 11/51680-6 - Exploring the universe: from the galaxies formation to Earth-like planets with the Giant Magellan Telescope, AP.ESP

Abstract

High-mass stars play a significant role on the evolution of the Universe and the process that leads to the formation of such objects is still an opened problem in Astrophysics. The details of the structures connected to the central sources, such as the circumstellar disks and the morphology of the jets at their launching points, still lack of observational evidences.We plan to estimate the mass of high-mass young stellar objects (HMYSOs) through the kinematics of the spectral features associated with the circumstellar disks, as well as to investigate the Physics of the accretion process in HMYSOs through the properties of the jets at their launching points.By following Davies et al. (2010), who measured the dynamical mass of the HMYSO W33A in ~10 Msun, we will use IFU observations with high angular resolution (0.050") acquired with the Gemini North telescope to determine the mass of 15 HMYSO candidates exhibiting large-scale jets.The accretion process on HMYSOs will be investigated through millimeter data taken with the ALMA interferometer at high angular and spectral resolution. Based on the ALMA observations, we will be able to investigate the structure of the jets at their launching points (in scales of ~100 AU) and to compare their properties are compatible with those derived at large-scales (~pc).These observations will also provide useful insights about rotation on jets associated with HMYSOs, such as recently found towards the low mass YSO HH 212.

Scientific publications

(12)

(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, FEB 8 2019. (13/11680-2, 14/20522-4, 17/18191-8)

NAVARETE, FELIPE; GALLI, PHILLIP A. B.; DAMINELI, AUGUSTO. Gaia-DR2 distance to the W3 Complex in the Perseus Arm. Monthly Notices of the Royal Astronomical Society, v. 487, n. 2, p. 2771-2784, AUG 2019. (17/18191-8, 11/51680-6)

DAMINELI, A.; FERNANDEZ-LAJUS, E.; ALMEIDA, L. A.; CORCORAN, M. F.; DAMINELI, D. S. C.; GULL, T. R.; HAMAGUCHI, K.; HILLIER, D. J.; JABLONSKI, F. J.; MADURA, T. I.; et al. Distinguishing circumstellar from stellar photometric variability in Eta Carinae. Monthly Notices of the Royal Astronomical Society, v. 484, n. 1, p. 1325-1346, MAR 2019. (12/09716-6, 17/18191-8, 13/18245-0, 11/51680-6)

BEAKLINI, PEDRO P. B.; MENDOZA, EDGAR; CANELO, CARLA M.; ALEMAN, ISABEL; MERELLO, MANUEL; KONG, SHUO; NAVARETE, FELIPE; JANOT-PACHECO, EDUARDO; ABRAHAM, ZULEMA; LEPINE, JACQUES R. D.; et al. Sulphur-bearing and complex organic molecules in an infrared cold core. Monthly Notices of the Royal Astronomical Society, v. 491, n. 1, p. 427-439, JAN 2020. (17/23708-0, 17/18191-8, 14/22095-6, 14/07460-0, 09/54006-4)

WEIGELT, G.; HOFMANN, K. -H.; SCHERTL, D.; LOPEZ, B.; PETROV, R. G.; LAGARDE, S.; BERIO, PH.; JAFFE, W.; HENNING, TH.; MILLOUR, F.; et al. VLTI-MATISSE chromatic aperture-synthesis imaging of eta Carinae's stellar wind across the Br alpha line Periastron passage observations in February 2020. Astronomy & Astrophysics, v. 652, AUG 25 2021. (19/02029-2, 17/18191-8)

GULL, THEODORE R.; NAVARETE, FELIPE; CORCORAN, MICHAEL F.; DAMINELI, AUGUSTO; ESPINOZA, DAVID; HAMAGUCHI, KENJI; HARTMAN, HENRIK; HILLIER, D. JOHN; MADURA, THOMAS; MOFFAT, ANTHONY F. J.; et al. Eta Carinae: A Tale of Two Periastron Passages. ASTROPHYSICAL JOURNAL, v. 923, n. 1, DEC 2021. (19/02029-2, 17/18191-8)

ALMEIDA-FERNANDES, F.; SAMPEDRO, L.; HERPICH, F. R.; MOLINO, A.; BARBOSA, C. E.; BUZZO, M. L.; OVERZIER, R. A.; DE LIMA, E. V. R.; NAKAZONO, L. M., I; OLIVEIRA SCHWARZ, G. B.; et al. Data Release 2 of S-PLUS: Accurate template-fitting based photometry covering similar to 1000 deg(2) in 12 optical filters. Monthly Notices of the Royal Astronomical Society, v. 511, n. 3, p. 29-pg., 2022-02-26. (09/54202-8, 16/12331-0, 19/01312-2, 18/09165-6, 19/10923-5, 19/26492-3, 20/00457-4, 19/23388-0, 14/10566-4, 18/20977-2, 19/11910-4, 19/26412-0, 11/51680-6, 18/21250-9, 17/18191-8)

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., 2019-02-08. (13/11680-2, 14/20522-4, 17/18191-8)

DAMINELI, A.; NAVARETE, F.; HILLIER, D. J.; MOFFAT, A. F. J.; CORCORAN, M. F.; GULL, T. R.; RICHARDSON, N. D.; WEIGELT, G.; MORRIS, P. W.; STEVENS, I. Spectroscopic signatures of the vanishing natural coronagraph of Eta Carinae. Monthly Notices of the Royal Astronomical Society, v. 505, n. 1, p. 963-978, JUL 2021. (11/51680-6, 19/02029-2, 17/18191-8)

HOFMANN, K-H; BENSBERG, A.; SCHERTL, D.; WEIGELT, G.; WOLF, S.; MEILLAND, A.; MILLOUR, F.; WATERS, L. B. F. M.; KRAUS, S.; OHNAKA, K.; et al. LTI-MATISSE L- and N-band aperture-synthesis imaging of the unclassified B[e] star FS Canis Majori. Astronomy & Astrophysics, v. 658, FEB 3 2022. (17/18191-8, 19/02029-2)

GREGORIO-HETEM, J.; NAVARETE, F.; HETEM, A.; SANTOS-SILVA, T.; GALLI, P. A. B.; FERNANDES, B.; MONTMERLE, T.; JATENCO-PEREIRA, V; FERNANDES, M. BORGES; PEROTTONI, H. D.; et al. Searching for Active Low-mass Stars in the CMa Star-forming Region: Multi-band Photometry with T80S. ASTRONOMICAL JOURNAL, v. 161, n. 3, MAR 2021. (18/06822-6, 14/18100-4, 18/21250-9, 17/19458-8, 17/18191-8, 18/05866-0)

NAVARETE, F.; DAMINELI, A.; STEINER, J. E.; BLUM, R. D.. Principal component analysis tomography in near-infrared integral field spectroscopy of young stellar objects - I. Revisiting the high-mass protostar W33A. Monthly Notices of the Royal Astronomical Society, v. 503, n. 1, p. 22-pg., 2021-03-12. (19/02029-2, 17/18191-8)