Analysis of Selected Runaway Stars in the Orion Nebula Based on Data from the Gaia EDR3 Catalogue

Abstract

We have performed Monte Carlo simulations of the trajectories of several runaway stars using their parallaxes and proper motions from the Gaia EDR3 catalogue. We have confirmed the hypothesis that the stars AE Aur and $\mu$Col are a product of the multiple system breakup $\sim$2.5 Myr ago and the Orion Trapezium may be the parent cluster for this pair of stars. We show that the data from the Gaia EDR3 catalogue for the star $\iota$Ori, mainly the parallax, do not allow us to talk about the breakup of the multiple system of AE Aur, $\mu$Col, and $\iota$Ori. The existence of close pair encounters between the stars HD 30112 and HD 43112 $\sim$1 Myr ago has been confirmed. Close triple encounters confirm the hypothesis that the stars HD 30112 and HD 43112 escaped from the parent cluster Col 69. We show that the stars HIP 28133 and TYC 5368-1541-1 have a nonzero probability of escape from the region within 10 pc of the center of the Orion Trapezium cluster and a fairly high probability (about 8\%) that they were both at distances less than 20 pc from the center of the Orion Trapezium $\sim$2.5 Myr ago. It has been established for the first time that the stars Gaia EDR3 3021115184676332288 and Gaia EDR3 2983790269606043648 have a probability of about 0.5\% that they broke up as a binary system $\sim$1.1 Myr ago. The star Gaia EDR3 3021115184676332288 has a probability of about 16\% that it escaped from the region within 10 pc of the center of the Orion Trapezium cluster $\sim$1 Myr ago.

arXiv comment15 pages, 9 figures, 3 tables

References in corpus (26)

• A Universal Density Profile from Hierarchical Clustering
• Gaia Data Release 2. Summary of the contents and survey properties
• Validation of the new Hipparcos reduction
• Local Kinematics and the Local Standard of Rest
• Trigonometric Parallaxes Of High-Mass Star Forming Regions: Our View Of The Milky Way
• A Gaia DR2 view of the Open Cluster population in the Milky Way
• Astrophysical parameters of Galactic open clusters
• On the origin of the O and B-type stars with high velocities II Runaway stars and pulsars ejected from the nearby young stellar groups
• Kinematics in Young Star Clusters and Associations with Gaia DR2
• Pulkovo Compilation of Radial Velocities for 35495 Hipparcos Stars in a Common System
• A catalogue of young runaway Hipparcos stars within 3kpc from the Sun
• Astrophysical supplements to the ASCC-2.5. Ia. Radial velocities of about 55000 stars and mean radial velocities of 516 Galactic open clusters and associations
• Open clusters in APOGEE and GALAH: Combining Gaia and ground-based spectroscopic surveys
• A search for Galactic runaway stars using Gaia Data Release 1 and Hipparcos proper motions
• The Structure, Dynamics and Star Formation Rate of the Orion Nebula Cluster
• Runaway and walkaway stars from the ONC with Gaia DR2
• Analysis of the Z Distribution of Young Objects in the Galactic Thin Disk
• Rotation Curve and Mass Distribution in the Galaxy from the Velocities of Objects at Distances up to 200 kpc
• Runaway Young Stars in the Orion Nebula
• The Proper Motions of the Double Radio Source n in the Orion BN/KL Region
• Hunting for Runaways from the Orion Nebula Cluster
• Spatially resolved spectroscopy of close massive visual binaries with HST/STIS: I. Seven O-type systems
• HST astrometry in the Orion Nebula Cluster: census of low-mass runaways
• On the dynamical evolution of the Orion Trapezium
• Kinematics of the Orion Trapezium Based on Diffracto-Astrometry and Historical Data
• Open Clusters ASCC21 as a Probable Birthplace of the Neutron Star Geminga

Cited by in corpus (2)

• The origin of early-type runaway stars from open clusters
• Galaxy Rotation Parameters from OB2 Stars with Proper Motions and Parallaxes from the Gaia EDR3 Catalog