Probabilistic Modeling of Asteroid Diameters from Gaia DR2 Errors
| Autor: | Valerio Carruba, Emille E. O. Ishida, Rafael S. de Souza, Mariela Huaman Espinoza, Safwan Alijbaae, William Barletta, R. C. Domingos, Alberto Krone-Martins |
|---|---|
| Přispěvatelé: | Laboratoire de Physique de Clermont (LPC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Earth and Planetary Astrophysics (astro-ph.EP)
Solar System media_common.quotation_subject Bayesian probability Probabilistic logic Flux FOS: Physical sciences General Medicine Astrometry Geodesy 01 natural sciences 010104 statistics & probability Asteroid Sky 0103 physical sciences [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] 0101 mathematics Astrophysics - Instrumentation and Methods for Astrophysics [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] 010303 astronomy & astrophysics Data release Instrumentation and Methods for Astrophysics (astro-ph.IM) Geology media_common Astrophysics - Earth and Planetary Astrophysics |
| Zdroj: | Res.Notes AAS Res.Notes AAS, 2021, 5 (8), pp.199. ⟨10.3847/2515-5172/ac205e⟩ |
| DOI: | 10.3847/2515-5172/ac205e⟩ |
| Popis: | The Gaia Data Release 2 provides precise astrometry for nearly 1.5 billion sources across the entire sky, including several thousand asteroids. In this work, we provide evidence that reasonably large asteroids (diameter $>$ 20 km) have high correlations with Gaia relative flux uncertainties and systematic right ascension errors. We further capture these correlations using a logistic Bayesian additive regression tree model. We compile a small list of probable large asteroids that can be targeted for direct diameter measurements and shape reconstruction. 3 pages, 1 figure, accepted for publication at Research Notes of the AAS |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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