Double trouble: Gaia reveals (proto)-planetary systems that may experience more than one dense star-forming environment
arXiv:2012.09879 · doi:10.1093/mnrasl/slaa182
Abstract
Planetary systems appear to form contemporaneously around young stars within young star-forming regions. Within these environments, the chances of survival, as well as the long-term evolution of these systems, are influenced by factors such as dynamical interactions with other stars and photoevaporation from massive stars. These interactions can also cause young stars to be ejected from their birth regions and become runaways. We present examples of such runaway stars in the vicinity of the Orion Nebula Cluster (ONC) found in Gaia DR2 data that have retained their discs during the ejection process. Once set on their path, these runaways usually do not encounter any other dense regions that could endanger the survival of their discs or young planetary systems. However, we show that it is possible for star-disc systems, presumably ejected from one dense star-forming region, to encounter a second dense region, in our case the ONC. While the interactions of the ejected star-disc systems in the second region are unlikely to be the same as in their birth region, a second encounter will increase the risk to the disc or planetary system from malign external effects.
arXiv comment6 pages, 1 figure, 2 tables, published in MNRAS Letters
References in corpus (67)
- Gaia Data Release 2. Summary of the contents and survey properties
- Embedded Clusters in Molecular Clouds
- Estimating distances from parallaxes IV: Distances to 1.33 billion stars in Gaia Data Release 2
- Disk Frequencies and Lifetimes in Young Clusters
- Protoplanetary Disks and Their Evolution
- First Results from High Angular Resolution ALMA Observations Toward the HL Tau Region
- The Disk Substructures at High Angular Resolution Project (DSHARP): I. Motivation, Sample, Calibration, and Overview
- Photoevaporation of Circumstellar Disks due to External FUV Radiation in Stellar Aggregates
- The Spitzer Space Telescope Survey of the Orion A & B Molecular Clouds - Part I: A Census of Dusty Young Stellar Objects and a Study of their Mid-IR Variability
- Unresolved stellar companions with Gaia DR2 astrometry
- The incidence of stellar mergers and mass gainers among massive stars
- Kinematics in Young Star Clusters and Associations with Gaia DR2
- The Spatial Distribution of Star Formation in the Solar Neighbourhood: Do all stars form in clusters?
- The APOGEE-2 Survey of the Orion Star Forming Complex II: Six-dimensional structure
- Early Evolution of Stellar Groups and Clusters: Environmental Effects on Forming Planetary Systems
- Before the first supernova: combined effects of HII regions and winds on molecular clouds
- Pre-main-sequence isochrones -- II. Revising star and planet formation timescales
- Inverse dynamical population synthesis: Constraining the initial conditions of young stellar clusters by studying their binary populations
- The Birth of High Mass Stars: Accretion and/or Mergers?
- Protoplanetary disc truncation mechanisms in stellar clusters: comparing external photoevaporation and tidal encounters
- A Multi-color Optical Survey of the Orion Nebula Cluster. II. the H-R diagram
- Dust evolution in protoplanetary disks around Herbig Ae/Be stars - The Spitzer view
- Nine localised deviations from Keplerian rotation in the DSHARP circumstellar disks: Kinematic evidence for protoplanets carving the gaps
- Kinematics of the Orion Nebula Cluster: Velocity Substructure and Spectroscopic Binaries
- The Initial Mass Function of the Orion Nebula Cluster across the H-burning limit
- Kinematic Structure of the Orion Nebula Cluster and its Surroundings
- 3D shape of Orion A from Gaia DR2
- Binary Stars in the Orion Nebula Cluster
- Circumstellar Disk Lifetimes In Numerous Galactic Young Stellar Clusters
- A Correlation Between Pre-Main Sequence Stellar Rotation Rates and IRAC Excesses in Orion
- Young Stellar Objects in Lynds 1641: Disks, Accretion, and Star Formation History
- The FRIED grid of mass loss rates for externally irradiated protoplanetary discs
- Quantitative Evidence for an Intrinsic Age Spread in the Orion Nebula Cluster
- Misaligned Protoplanetary Disks in a Young Binary System
- Proper Motions of the BN Object and the I Radio Source in Orion: Where and When Did BN Become a Runaway Star?
- IN-SYNC IV - The Young Stellar Population in the Orion A Molecular Cloud
- Shadows and asymmetries in the T Tauri disk HD 143006: Evidence for a misaligned inner disk
- The effects of dynamical interactions on planets in young substructured star clusters
- Binary deviations from single object astrometry
- A Multi-Epoch Study of the Radio Continuum Emission of Orion Source I: Constraints on the Disk Evolution of a Massive YSO and the Dynamical History of Orion BN/KL
- The DSHARP Rings: Evidence of Ongoing Planetesimal Formation?
- UV variability and accretion dynamics in the young open cluster NGC 2264
- Rotational Velocities and Radii of Pre-Main-Sequence Stars in the Orion Nebula Cluster
- Accurate determination of accretion and photospheric parameters in Young Stellar Objects: the case of two candidate old disks in the Orion Nebula Cluster
- The Becklin-Neugebauer Object as a Runaway B Star, Ejected 4000 years ago from the theta^1C system
- Transitional disks and their origins: an infrared spectroscopic survey of Orion A
- Runaway and walkaway stars from the ONC with Gaia DR2
- Cluster dynamics largely shapes protoplanetary disc sizes
- Dynamics versus structure: breaking the density degeneracy in star formation
- VISION - Vienna survey in Orion. III. Young stellar objects in Orion A
- Rapid destruction of protoplanetary discs due to externalphotoevaporation in star-forming regions
- Probing the Final Stages of Protoplanetary Disk Evolution with ALMA
- WISE J080822.18-644357.3 - a 45 Myr-old accreting M dwarf hosting a primordial disc
- Photoevaporation and close encounters: how the environment around Cygnus OB2 affects the evolution of protoplanetary disks
- How do disks and planetary systems in high-mass open clusters differ from those around field stars?
- Stellar Proper Motions in the Orion Nebula Cluster
- Evolution of the T Tauri star population in the Lupus association
- Spectroscopic Binaries in the Orion Nebula Cluster and NGC 2264
- The Orion Protostellar Explosion and Runaway Stars Revisited: Stellar Masses, Disk Retention, and an Outflow from BN
- Runaway Young Stars in the Orion Nebula
- Effects of stellar density on the photoevaporation of circumstellar discs
- Dynamical evolution of star-forming regions: III. Unbound stars and predictions for Gaia
- Encounters in the ONC - observing imprints of star-disc interactions
- Stars on the run: escaping from stellar clusters
- Testing the initial conditions and dynamical evolution of star clusters using Gaia - I
- On the Formation of Runaway Stars BN and x in the Orion Nebula Cluster
- Circumbinary disc survival during binary-single scattering: towards a dynamical model of the Orion BN/KL complex