Lightcurve Studies of Trans-Neptunian Objects from the Outer Solar System Origins Survey using the Hyper Suprime-Camera - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2016

Lightcurve Studies of Trans-Neptunian Objects from the Outer Solar System Origins Survey using the Hyper Suprime-Camera

Mike Alexandersen
Susan D. Benecchi
  • Fonction : Auteur
Ying-Tung Chen
Megan Elizabeth Schwamb
  • Fonction : Auteur
Shiang-Yu Wang
Matthew Lehner
  • Fonction : Auteur
Brett Gladman
Jj Kavelaars
  • Fonction : Auteur
Michele T. Bannister
  • Fonction : Auteur
Stephen Gwyn
Kathryn Volk

Résumé

Lightcurves can reveal information about the gravitational processes that have acted on small bodies since their formation and/or their gravitational history.At the extremes, lightcurves can provide constraints on the material properties and interior structure of individual objects.In large sets, lightcurves can possibly shed light on the source of small body populations that did not form in place (such as the dynamically excited trans-Neptunian Objects (TNOs)).We have used the sparsely sampled photometry from the well characterized Outer Solar System Origins Survey (OSSOS) discovery and recovery observations to identify TNOs with potentially large amplitude lightcurves.Large lightcurve amplitudes would indicate that the objects are likely elongated or in potentially interesting spin states; however, this would need to be confirmed with further follow-up observations.We here present the results of a 6-hour pilot study of a subset of 17 OSSOS objects using Hyper Suprime-Cam (HSC) on the Subaru Telescope.Subaru's large aperture and HSC's large field of view allows us to obtain measurements on multiple objects with a range of magnitudes in each telescope pointing.Photometry was carefully measusured using an elongated aperture method to account for the motion of the objects, producing the short but precise lightcurves that we present here.The OSSOS objects span a large range of sizes, from as large as several hundred kilometres to as small as a few tens of kilometres in diameter.We are thus investigating smaller objects than previous light-curve projects have typically studied.
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Dates et versions

hal-03563279 , version 1 (09-02-2022)

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Mike Alexandersen, Susan D. Benecchi, Ying-Tung Chen, Megan Elizabeth Schwamb, Shiang-Yu Wang, et al.. Lightcurve Studies of Trans-Neptunian Objects from the Outer Solar System Origins Survey using the Hyper Suprime-Camera. DPS 48/EPSC 11, Oct 2016, Pasadena, United States. ⟨hal-03563279⟩
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