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Stellar activity from spot planetary transit modeling

Grant number: 22/12024-0
Support Opportunities:Scholarships in Brazil - Post-Doctoral
Start date: December 01, 2022
End date: November 30, 2025
Field of knowledge:Physical Sciences and Mathematics - Astronomy - Stellar Astrophysics
Principal Investigator:Adriana Benetti Marques Valio
Grantee:Fabian Marcel Menezes
Host Institution: Escola de Engenharia (EE). Universidade Presbiteriana Mackenzie (UPM). Instituto Presbiteriano Mackenzie. São Paulo , SP, Brazil
Associated research grant:18/04055-8 - High precision spectroscopy: from the first stars to planets, AP.TEM

Abstract

This postdoctoral research project aims to better understand stellar activity from the characterization of features on the surface of the star such as spots and faculae. One way of doing this is from the modeling of signatures in the stellar light curve when a transiting planet eclipses such spots. From this modeling, physical properties of spots such as size, intensity, temperatura and magnetic field, as well as the spot position on the stellar surface can be estimated. Moreover, the rotation and differential rotation of the stars can also be determined.

News published in Agência FAPESP Newsletter about the scholarship:
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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)
MENEZES, FABIAN; ARAUJO, ALEXANDRE; VALIO, ADRIANA. Probing the magnetic fields of starspots with transit mapping. Astronomy & Astrophysics, v. 691, p. 5-pg., . (18/04055-8, 21/02120-0, 22/12024-0)
MENEZES, FABIAN; VALIO, ADRIANA; NETTO, YURI; ARAUJO, ALEXANDRE; KAY, CHRISTINA; OPHER, MERAV. Trajectories of coronal mass ejection from solar-type stars. Monthly Notices of the Royal Astronomical Society, v. 522, n. 3, p. 12-pg., . (13/10559-5, 22/12024-0)