Is it possible to reveal the lost siblings of the Sun?

Abstract

We present the results of our numerical experiments on stellar scattering in the galactic disc under the influence of the perturbed galactic gravitation field connected with the spiral density waves and show that the point of view according to which stars do not migrate far from their birthplace, in general, is incorrect. Despite close initial locations and the same velocities after 4.6 Gyrs members of an open cluster are scattered over a very large part of the galactic disc. If we adopt that the parental solar cluster had $\sim 10^3$ stars, it is unlikely to reveal the solar siblings within 100 pc from the Sun. The problem stands a good chance to be solved if the cluster had $\sim 10^4$ stars. We also demonstrate that unbound open clusters disperse off in a short period of time under the influence of spiral gravitation field. Their stars became a part of the galactic disc. We have estimated typical times of the cluster disruption in radial and azimuth directions and the corresponding diffusion coefficients.

7 pages, 12 figures

References in corpus (1)

• Stellar Kinematic Constraints on Galactic Structure Models Revisited: Bar and Spiral Arm Resonances

Cited by in corpus (21)

• Elemental Abundances of Solar Sibling Candidates
• The Sun was not born in M 67
• Global survey of star clusters in the Milky Way IV. 63 new open clusters detected by proper motions
• Radial Migration of the Sun in the Milky Way: a Statistical Study
• The evolution of the Sun's birth cluster and the search for the solar siblings with Gaia
• Heterogeneity of the Population of Open Star Clusters in the Galaxy
• Assessing the influence of the solar orbit on terrestrial biodiversity
• Probabilities for Solar Siblings
• Galactic restrictions on iron production by various Types of supernovae
• Quest for finding the lost siblings of the Sun
• Galactic Kinematics from OB3 Stars with Distances determined from Interstellar Ca II Lines
• Searching for Possible Siblings of the Sun from a Common Cluster based on Stellar Space Velocities
• Galactic Constraints on Supernova Progenitor Models
• Searching for solar siblings among the HARPS data
• The Formation of Binary Star Clusters in the Milky Way and Large Magellanic Cloud
• Comet C/2018 V1 (Machholz-Fujikawa-Iwamoto): dislodged from the Oort Cloud or coming from interstellar space?
• Determination of the Spiral Pattern Speed in the Galaxy from Three Samples of Stars
• Search for Kinematic Siblings of the Sun Based on Data from the XHIP Catalog
• iota Horologii is unlikely to be an evaporated Hyades star
• Local metallicity distribution function derived from Galactic large-scale radial iron pattern modelling
• Kinematics of nearby OB3 stars with interstellar CaII line distances