On the lithium mass ejected in novae: a current analysis

• Grant number: 19/08341-8
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: February 01, 2020
• End date: January 17, 2024
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Stellar Astrophysics
• Principal Investigator: Marcos Perez Diaz
• Grantee: Larissa Takeda
• Host Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated scholarship(s): 22/02471-0 - Revising abundances of nova shells, BE.EP.PD

Abstract

The discussion on the stellar origin of the Galactic lithium has been revisited since the detection of 7Be, which decays into Li, in nova V339 Del spectra. Recent observations of several novae indicate that nova eruptions are relevant processes of Li production and could eventually explain the Galactic Li abundance. However, the determination of 7Be mass produced in a nova eruption is highly dependent on the Ca abundance and the total shell mass values. Thus, for a precise determination of the contribution of novae to the Galactic beryllium and lithium abundances, we need more accurate methods to study nova shells. Nowadays, 3D photoionization models allied to high-resolution imaging and multi-wavelength spectroscopy are the best methods to improve nova shell analysis. (AU)

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)

TAKEDA, L.; DIAZ, M.; CAMPBELL, R. D.; LYKE, J. E.; LAWRENCE, S. S.; LINFORD, J. D.; SOKOLOVSKY, V, K.. ptical and near-infrared data and modelling of nova V5668 Sg. Monthly Notices of the Royal Astronomical Society, v. 511, n. 2, p. 1591-1600, FEB 8 2022. (19/08341-8)