#TITLE_ALTERNATIVE#

• Main Author: DARMA (NIM : 10313007), RENDY
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/30312
• Institution: Institut Teknologi Bandung

Discovery of short-lived radioisotopes and Edgeworth-Kuiper belt objects with high inclination and eccentricity in our solar system indicates that sun was born in an open cluster (sun0s birth cluster) at 4.6 billion years ago. If sun was born in an open cluster, it means there are stars those were born in the same open cluster with sun at 4.6 billion years ago (solar siblings). In this final project I do N-body simulations of sun0s birth cluster in Galactic potential models, i.e. axisymmetric, axisymmetric + 2 spiral arms, and axisymmetric + 4 spiral arms. The results of this simulations are solar siblings distributions in our Galactic. <br /> <br /> <br /> <br /> N-body simulation in axisymmetric potential provides that about 12 up to 14 solar siblings can be found in the radius of 100 pc from sun. This number of solar siblings can be about 180 up to 200 in the radius of 1000 pc from sun. There are 20 up to 26 solar siblings with UBV apparent magnitudes less than or equal to of 20 in the radius of 1000 pc from sun. The fraction of siblings <br /> <br /> <br /> <br /> in the radius of 100 pc to 1000 pc from sun are in range of 0.05% to 0.2%. Meanwhile in the axisymmetric + 2 spiral arms and axisymmetric + 4 spiral arms potential models, solar siblings can be found in the radius of 300 pc to <br /> <br /> <br /> <br /> 1000 pc from sun with number of 8 up to 11 solar siblings. There are no solar siblings with UBV apparent magnitudes less than or equal to of 20 in both potential models. Fraction of siblings with both potential models are less than axisymmetric potential model, i.e. 0.009% to 0.013%.