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Made available in DSpace on 2022-04-29T08:40:30Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-01-01
We present a search for outer solar system objects in the 6 yr of data from the Dark Energy Survey (DES). The DES covered a contiguous 5000 deg2 of the southern sky with ≈80,000 3 deg2 exposures in the grizY filters between 2013 and 2019. This search yielded 812 trans-Neptunian objects (TNOs), one Centaur and one Oort cloud comet, 458 reported here for the first time. We present methodology that builds upon our previous search on the first 4 yr of data. All images were reprocessed with an optimized detection pipeline that leads to an average completeness gain of 0.47 mag per exposure, as well as improved transient catalog production and algorithms for linkage of detections into orbits. All objects were verified by visual inspection and by the sub-threshold significance,the signal-to-noise ratio in the stack of images in which its presence is indicated by the orbit, but no detection was reported. This yields a pure catalog complete to r ≈ 23.8 mag and distances 29 < d < 2500 au. The TNOs have minimum (median) of 7 (12) nights' detections and arcs of 1.1 (4.2) yr, and will have grizY magnitudes available in a further publication. We present software for simulating our observational biases for comparisons of models to our detections. Initial inferences demonstrating the catalog's statistical power are: the data are inconsistent with the CFEPS-L7 model for the classical Kuiper Belt; the 16 extremeTNOs (a > 150 au, q > 30 au) are consistent with the null hypothesis of azimuthal isotropy; and nonresonant TNOs with q > 38 au, a > 50 au show a significant tendency to be sunward of major mean-motion resonances.
Department of Physics and Astronomy University of Pennsylvania
Fermi National Accelerator Laboratory, P.O. Box 500
Laboratório Interinstitucional de E-Astronomia - LIneA, Rua Gal. José Cristino 77, RJ
Instituto de Física Teórica Universidade Estadual Paulista
CNRS UMR 7095 Institut d'Astrophysique de Paris
Sorbonne Universités UPMC Univ Paris 06 UMR 7095 Institut d'Astrophysique de Paris
Department of Physics and Astronomy University College London, Gower Street
Department of Astronomy and Astrophysics University of Chicago
Kavli Institute for Particle Astrophysics and Cosmology Stanford University, P.O. Box 2450
SLAC National Accelerator Laboratory
Center for Astrophysical Surveys National Center for Supercomputing Applications, 1205 West Clark Street
Department of Astronomy University of Illinois at Urbana-Champaign, 1002 West Green Street
Institut de Física d'Altes Energies (IFAE) The Barcelona Institute of Science and Technology Campus UAB, Bellaterra (Barcelona)
Jodrell Bank Center for Astrophysics School of Physics and Astronomy University of Manchester, Oxford Road
University of Nottingham School of Physics and Astronomy
Astronomy Unit Department of Physics University of Trieste, via Tiepolo 11
INAF-Osservatorio Astronomico di Trieste, via G.B. Tiepolo 11
Institute for Fundamental Physics of the Universe, Via Beirut 2
Observatório Nacional, Rua Gal. José Cristino 77, RJ
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
Department of Physics IIT Hyderabad, Telangana
Faculty of Physics Ludwig-Maximilians-Universität, Scheinerstr. 1
Santa Cruz Institute for Particle Physics
Institute of Theoretical Astrophysics University of Oslo, P.O. Box 1029, Blindern
Institut d'Estudis Espacials de Catalunya (IEEC)
Institute of Space Sciences (ICE CSIC) Campus UAB, Carrer de Can Magrans, s/n
Kavli Institute for Cosmological Physics University of Chicago
Instituto de Fisica Teorica UAM/CSIC Universidad Autonoma de Madrid
Department of Astronomy University of Michigan, Ann Arbor, MI
Department of Physics University of Michigan, Ann Arbor, MI
School of Mathematics and Physics University of Queensland, Brisbane, QLD
Center for Cosmology and Astro-Particle Physics The Ohio State University, Columbus, OH
Department of Physics The Ohio State University, Columbus, OH
Center for Astrophysics Harvard and Smithsonian 60 Garden Street
Australian Astronomical Optics Macquarie University
Lowell Observatory, 1400 Mars Hill Road
Institució Catalana de Recerca i Estudis Avançats
Physics Department University of Wisconsin-Madison, 2320 Chamberlin Hall, 1150 University Avenue
Department of Physics Stanford University, 382 Via Pueblo Mall
Institute of Astronomy University of Cambridge, Madingley Road
Department of Astrophysical Sciences Princeton University, Peyton Hall
Department of Physics and Astronomy Pevensey Building University of Sussex
School of Physics and Astronomy University of Southampton
Computer Science and Mathematics Division Oak Ridge National Laboratory
Max Planck Institute for Extraterrestrial Physics, Giessenbachstrasse
Universitäts-Sternwarte Fakultät für Physik Ludwig-Maximilians Universität München, Scheinerstr. 1
Cerro Tololo Inter-American Observatory NSFs NOIRLab, Casilla 603
Instituto de Física Teórica Universidade Estadual Paulista
