Searching for young runaways across the sky
Marina Kounkel, Aidan McBride, Keivan G. Stassun, Nathan Leigh

TL;DR
This paper compiles a catalog of 3354 young stars likely ejected from star-forming regions within 500 parsecs, using 2D traceback methods, and discusses the challenges of confirming their kinematics with Gaia DR3 data.
Contribution
It introduces a homogeneous 2D traceback method to identify young runaway stars and potential ejected pairs, highlighting the need for spectral follow-up and addressing Gaia DR3 limitations.
Findings
Catalog of 3354 candidate young runaways within 500 pc.
Identification of potential ejected star pairs with similar traceback times.
Gaia DR3 radial velocities are unreliable for low-mass, young stars due to spectral complexities.
Abstract
We present a catalog of 3354 candidate young stars within 500 pc that appear to have been ejected from their parent associations with relative speeds of >5 km/s. These candidates have been homogeneously selected through performing a 2d spherical traceback of previously identified pre-main sequence candidates to various star forming regions, ensuring that the traceback age as well as the estimated age of a star is consistent with the age of the population, and excluding contaminants from the nearby moving groups that follow the dominant velocity currents in the field. Among the identified candidates we identify a number of pairs that appear to have interacted in the process of the ejection, these pairs have similar traceback time, and their trajectory appears to be diametrically opposite from each other, or they have formed a wide binary in the process. As the selection of these…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsClimate Change, Adaptation, Migration · Migration, Aging, and Tourism Studies
