The Metallicity of the Sun Reviewed from Pre-Main Sequence Evolution

Putri Indriani; Aprilia Aprilia

doi:10.12962/j24604682.v18i3.12791

The Metallicity of the Sun Reviewed from Pre-Main Sequence Evolution

Putri Indriani, Aprilia Aprilia

Abstract

Metallicity is defined as the fraction of the abundance of elements heavier than hydrogen and helium. Metallicity has different values for different stellar objects and its value will also change as the star evolves. This research is focused on calculating and analyzing the early metallicity of the Sun, that is at the beginning of the Sun's evolution at the Pre-Main Sequence. Five metallicity samples with an initial mass of 1 M_⊙ were used. This study uses the evolution code MESA r-15140 which produces a Hertzsprung-Russell diagram with various metallicities. From the simulation, it is found that the most suitable metallicity is 0.065. There are four dominant elements at the core of the Sun, namely hydrogen, helium, carbon, and oxygen. The density, pressure, and temperature values at the core of the Sun also increase with age.

Keywords

Metallicity; Sun; Pre-Main Sequence Evolution; MESA

Full Text:

PDF

References

S. Vagnozzi, ”New Solar Metallicity Measurements,” Atoms, vol. 7, issue 2, April 2019.

A. Prsa˘ et al., ”Nominal Values for Selected Solar and Planetary Quantities: IAU 2015 Resolution B3,” The Astronomical Journal, vol. 152, pp. 4147, August 2016.

B. Paxton et al., ”Modules for Experiments in Stellar Astrophysics (MESA): Pulsating Variable Stars, Rotation, Convective Boundaries, and Energy Conservation,” The Astrophysical Journal Supplement Series, vol. 243, issue 1, July 2019.

J. Choi et al., ”Mesa Isochrones and Stellar Tracks (Mist). I. Solar-Scaled Models,” The Astrophysical Journal, vol. 823, no. 2, p. 102, June 2016.

H. S. Wang et al., ”The Volatility Trend of Protosolar and Terrestrial Elemental Abundances,” Icarus, vol. 328, pp. 287305, 2019.

F. Spada et al., ”Improved Calibration of the Radii of Cool Stars Based on 3D Simulations of Convection: Implication for the Solar Model,” The Astrophysical Journal, vol. 868, no. 2, p. 135, December 2018.

DOI: http://dx.doi.org/10.12962%2Fj24604682.v18i3.12791