Differential abundances in solar-type stars: implications for planets formation and stellar nucleosynthesis

• Grant number: 14/15706-9
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: January 01, 2015
• End date: September 30, 2017
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Stellar Astrophysics
• Principal Investigator: Jorge Luis Melendez Moreno
• Grantee: Lorenzo Spina
• Host Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 12/24392-2 - High precision spectroscopy: impact in the study of planets, stars, the galaxy and cosmology, AP.TEM

Abstract

This postdoctoral project aims to explore the differential analysis technique developed in our group, in order to determine stellar parameters and chemical abundances in solar-type stars. Using precise abundances (0.01 dex) we will investigate the connection between chemical anomalies and planet formation and we will study various stellar nucleosynthesis processes at unprecedented detail.

Scientific publications

(14)

(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)

SPINA, LORENZO; MELENDEZ, JORGE; RAMIREZ, IVAN. Planet signatures and effect of the chemical evolution of the Galactic thin-disk stars. Astronomy & Astrophysics, v. 585, JAN 2016. (14/15706-9, 12/24392-2)

SPINA, L.; PALLA, F.; RANDICH, S.; SACCO, G.; JEFFRIES, R.; MAGRINI, L.; FRANCIOSINI, E.; MEYER, M. R.; TAUTVAISIENE, G.; GILMORE, G.; et al. The Gaia-ESO Survey: chemical signatures of rocky accretion in a young solar-type star. Astronomy & Astrophysics, v. 582, OCT 2015. (14/15706-9)

TUCCI MAIA, M.; MELENDEZ, J.; LORENZO-OLIVEIRA, D.; SPINA, L.; JOFRE, P.. Revisiting the 16 Cygni planet host at unprecedented precision and exploring automated tools for precise abundances. Astronomy & Astrophysics, v. 628, AUG 20 2019. (16/20667-8, 14/15706-9, 18/04055-8)

SPINA, L.; MELENDEZ, J.; KARAKAS, A. I.; RAMIREZ, I.; MONROE, T. R.; ASPLUND, M.; YONG, D.. Nucleosynthetic history of elements in the Galactic disk [X/Fe]-age relations from high-precision spectroscopy. Astronomy & Astrophysics, v. 593, SEP 2016. (12/24392-2, 14/15706-9)

DOS SANTOS, LEONARDO A.; MELENDEZ, JORGE; DO NASCIMENTO, JR., JOSE-DIAS; BEDELL, MEGAN; RAMIREZ, IVAN; BEAN, JACOB L.; ASPLUND, MARTIN; SPINA, LORENZO; DREIZLER, STEFAN; ALVES-BRITO, ALAN; et al. The Solar Twin Planet Search IV. The Sun as a typical rotator and evidence for a new rotational braking law for Sun-like stars. Astronomy & Astrophysics, v. 592, AUG 2016. (14/15706-9, 16/01684-9, 12/24392-2, 14/26908-1)

DUFFAU, S.; CAFFAU, E.; SBORDONE, L.; BONIFACIO, P.; ANDRIEVSKY, S.; KOROTIN, S.; BABUSIAUX, C.; SALVADORI, S.; MONACO, L.; FRANCOIS, P.; et al. The Gaia-ESO Survey: Galactic evolution of sulphur and zinc. Astronomy & Astrophysics, v. 604, AUG 2017. (14/15706-9)

DOS SANTOS, LEONARDO A.; MELENDEZ, JORGE; BEDELL, MEGAN; BEAN, JACOB L.; SPINA, LORENZO; ALVES-BRITO, ALAN; DREIZLER, STEFAN; RAMIREZ, IVAN; ASPLUND, MARTIN. Spectroscopic binaries in the Solar Twin Planet Search program: from substellar-mass to M dwarf companions. Monthly Notices of the Royal Astronomical Society, v. 472, n. 3, p. 3425-3436, DEC 2017. (14/15706-9, 16/01684-9, 12/24392-2, 14/26908-1)

SPINA, L.; PALLA, F.; RANDICH, S.; SACCO, G.; JEFFRIES, R.; MAGRINI, L.; FRANCIOSINI, E.; MEYER, M. R.; TAUTVAISIENE, G.; GILMORE, G.; et al. The Gaia-ESO Survey: chemical signatures of rocky accretion in a young solar-type star. ASTRONOMY & ASTROPHYSICS, v. 582, p. 5-pg., 2015-10-01. (14/15706-9)

BEDELL, MEGAN; BEAN, JACOB L.; MELENDEZ, JORGE; SPINA, LORENZO; RAMIREZ, IVAN; ASPLUND, MARTIN; ALVES-BRITO, ALAN; DOS SANTOS, LEONARDO; DREIZLER, STEFAN; YONG, DAVID; et al. The Chemical Homogeneity of Sun-like Stars in the Solar Neighborhood. ASTROPHYSICAL JOURNAL, v. 865, n. 1, SEP 20 2018. (14/15706-9, 12/24392-2)

SPINA, LORENZO; MELENDEZ, JORGE; CASEY, ANDREW R.; KARAKAS, AMANDA I.; TUCCI-MAIA, MARCELO. Chemical Inhomogeneities in the Pleiades: Signatures of Rocky-forming Material in Stellar Atmospheres. ASTROPHYSICAL JOURNAL, v. 863, n. 2, AUG 20 2018. (14/15706-9, 12/24392-2)

SPINA, LORENZO; MELENDEZ, JORGE; KARAKAS, AMANDA I.; DOS SANTOS, LEONARDO; BEDELL, MEGAN; ASPLUND, MARTIN; RAMIREZ, IVAN; YONG, DAVID; ALVES-BRITO, ALAN; BEAN, JACOB L.; et al. The temporal evolution of neutron-capture elements in the Galactic discs. Monthly Notices of the Royal Astronomical Society, v. 474, n. 2, p. 2580-2593, FEB 2018. (14/15706-9, 12/24392-2)

SPINA, L.; RANDICH, S.; MAGRINI, L.; JEFFRIES, R. D.; FRIEL, E. D.; SACCO, G. G.; PANCINO, E.; BONITO, R.; BRAVI, L.; FRANCIOSINI, E.; et al. The Gaia-ESO Survey: the present-day radial metallicity distribution of the Galactic disc probed by pre-main-sequence clusters. Astronomy & Astrophysics, v. 601, MAY 2017. (14/15706-9)

TUCCI MAIA, M.; MELENDEZ, J.; LORENZO-OLIVEIRA, D.; SPINA, L.; JOFRE, P.. Revisiting the 16 Cygni planet host at unprecedented precision and exploring automated tools for precise abundances. ASTRONOMY & ASTROPHYSICS, v. 628, p. 11-pg., 2019-08-20. (18/04055-8, 16/20667-8, 14/15706-9)

SPINA, LORENZO; MELENDEZ, JORGE; RAMIREZ, IVAN. Planet signatures and effect of the chemical evolution of the Galactic thin-disk stars. ASTRONOMY & ASTROPHYSICS, v. 585, p. 15-pg., 2016-01-01. (12/24392-2, 14/15706-9)