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We report on the properties of eclipsing binaries from the Kepler mission with a newly developed photometric modeling code, which uses the light curve, spectral energy distribution of each binary, and stellar evolution models to infer…

太阳与恒星天体物理 · 物理学 2019-08-14 Diana Windemuth , Eric Agol , Aleezah Ali , Flavien Kiefer

We present a new non-convex model of the 90 Antiope binary asteroid, derived with a modified version of the SAGE (Shaping Asteroids with Genetic Evolution) method using disk-integrated photometry only. A new variant of the SAGE algorithm…

地球与行星天体物理 · 物理学 2019-04-25 P. Bartczak , T. Michałowski , T. Santana-Ros , G. Dudziński

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…

We present a database of well determined orbital parameters of exoplanets. This database comprises spectroscopic orbital elements measured for 427 planets orbiting 363 stars from radial velocity and transit measurements as reported in the…

Many asteroid databases with lightcurve brightness measurements (e.g. WISE, Pan-STARRS1) contain enormous amounts of data for asteroid shape and spin modelling. While lightcurve inversion is not plausible for individual targets with scarce…

地球与行星天体物理 · 物理学 2017-12-13 Hari Nortunen , Mikko Kaasalainen

We present 24 new dense lightcurves of the near-Earth asteroids (3103) Eger, (161989) Cacus, (2100) Ra-Shalom and (12711) Tukmit, obtained with the Instituto Astrof\'isico Canarias 80 and Telescopio Abierto Remoto 2 telescopes at the Teide…

The rapid accumulation of thermal infrared observations and shape models of asteroids has led to increased interest in thermophysical modeling. Most of these infrared observations are unresolved. We consider what fraction of an asteroid's…

地球与行星天体物理 · 物理学 2017-02-08 C. R. Nugent , A. Mainzer , J. Masiero , E. L. Wright , J. Bauer , T. Grav , E. A. Kramer , S. Sonnett

The rotational distribution of asteroids as a function of their size is used {as a diagnostic of} their physical properties and evolution. Recent photometric surveys from the Gaia mission, allowing observation of asteroids with long spin…

地球与行星天体物理 · 物理学 2025-02-28 Wen-Han Zhou , Patrick Michel , Marco Delbo , Wenchao Wang , Bonny Y. Wang , Josef Ďurech , Josef Hanuš

We acquired and analyzed adaptive-optics imaging observations of asteroid (2) Pallas from Keck II and the Very Large Telescope taken during four Pallas oppositions between 2003 and 2007, with spatial resolution spanning 32-88 km (image…

We analyzed 82,548 carefully curated observations of 4420 asteroids with Wide-field Infrared Survey Explorer (WISE) four-band data to produce estimates of diameters and infrared emissivities. We also used these diameter values in…

地球与行星天体物理 · 物理学 2021-11-17 Nathan Myhrvold , Pavlo Pinchuk , Jean-Luc Margot

In the last decades Near-Earth Objects (NEOs) have become very important targets to study, since they can give us clues to the formation, evolution and composition of the Solar System. In addition, they may represent either a threat to…

地球与行星天体物理 · 物理学 2014-09-24 S. Ieva , E. Dotto , D. Perna , M. A. Barucci , F. Bernardi , S. Fornasier , F. De Luise , E. Perozzi , A. Rossi , J. R. Brucato

Most meteorites are fragments from recent collisions experienced in the asteroid belt. In such a hyper-velocity collision, the smaller collision partner is destroyed, whereas a crater on the asteroid is formed or it is entirely disrupted,…

地球与行星天体物理 · 物理学 2016-06-15 Eike Beitz , Jürgen Blum , M. Gabriela Parisi , Josep M. Trigo-Rodríguez

We apply AnalyticLC, an analytic model described in an accompanying paper, to interpret Kepler data of systems that contain two or three transiting planets. We perform tests to verify that the obtained solutions agree with full N-body…

地球与行星天体物理 · 物理学 2022-02-02 Yair Judkovsky , Aviv Ofir , Oded Aharonson

Large surveys provide numerous non-targeted observations of small bodies (SSOs). The upcoming LSST of the Rubin observatory will be the largest source of SSO photometry in the next decade. With non-coordinated epochs of observation, colors,…

地球与行星天体物理 · 物理学 2024-06-26 B. Carry , J. Peloton , R. Le Montagner , M. Mahlke , J. Berthier

We discuss measurements of the properties of about 10,000 asteroids detected in 500 deg2 of sky in the Sloan Digital Sky Survey (SDSS) commissioning data. The moving objects are detected in the magnitude range 14 < r < 21.5, with a baseline…

天体物理学 · 物理学 2008-11-26 Z. Ivezic , S. Tabachnik , R. Rafikov , R. H. Lupton , T. Quinn , M. Hammergren , L. Eyer et al

In this article we consider different methods of modeling asteroid shapes, especially lightcurve inversion technique, and scattering laws used for it. We also introduce our program, which constructs lightcurves for a given asteroid shape…

地球与行星天体物理 · 物理学 2016-01-27 Andrii Kokorev , Oleksiy Golubov

If properly calibrated, the shapes of galaxy clusters can be used to investigate many physical processes: from feedback and quenching of star formation, to the nature of dark matter. Theorists frequently measure shapes using moments of…

宇宙学与河外天体物理 · 物理学 2020-11-11 David Harvey , Andrew Robertson , Sut-Ieng Tam , Mathilde Jauzac , Richard Massey , Jason Rhodes , Ian G. McCarthy

Context. Rotational instability of rubble-pile asteroids can trigger mass shedding, forming transient debris clouds that may provide the initial conditions for secondary formation in binary systems. Aims. We investigate the dynamical and…

地球与行星天体物理 · 物理学 2025-12-16 Yutian Wu , Xiaojing Zhang , Chenyang Huang , Yang Yu

Asteroids formed in a dynamically quiescent disk but their orbits became gravitationally stirred enough by Jupiter to lead to high-speed collisions. As a result, many dozen large asteroids have been disrupted by impacts over the age of the…

地球与行星天体物理 · 物理学 2016-08-31 D. Nesvorny , M. Broz , V. Carruba

We present here multi-band photometry for over 2000 Main-belt asteroids. For each target we report the probabilistic taxonomy using the measured V-R and V-I colors in combination with a machine-learning generated decision surface in…

地球与行星天体物理 · 物理学 2019-06-05 N. Erasmus , A. McNeill , M. Mommert , D. E. Trilling , A. A. Sickafoose , K. Paterson