A surprise in the updated list of stellar perturbers of long period comets motion
Rita Wysocza\'nska, Piotr A. Dybczy\'nski, Magdalena Poli\'nska

TL;DR
This paper updates the list of stars that can influence long period comets, providing a new database with 147 additional perturbers, which significantly impacts cometary dynamics studies.
Contribution
The authors present an updated, publicly available database of stellar perturbers of long period comets, including new objects, revised data, and detailed mass estimations, enhancing dynamical analyses.
Findings
147 new stellar perturbers identified.
Updated list significantly alters past and future comet motion analysis.
Discovery of a puzzling star, ALS 9243, with conflicting data.
Abstract
The second Gaia data release (Gaia DR2) provided us with the precise five-parameter astrometry for 1.3 billion of sources. As stars passing close to the Solar System are thought to be responsible for influencing the dynamical history of long period comets, we update and extend the list of stars that could potentially perturb motion of these comets. We aim to announce a publicly available database containing an up to date list of stars and stellar systems potentially perturbing long period comets motion. We add new objects and revise previously published lists. Special emphasis was placed on stellar systems. Discussion on masses estimation is included. Using the astrometry, preferably from Gaia DR2, augmented with data from other sources, we calculate spatial positions and velocities for each star. To filter studied objects on the basis of their minimal heliocentric distances we…
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
TopicsAstro and Planetary Science · Stellar, planetary, and galactic studies · Astronomy and Astrophysical Research
