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相关论文: WISE/NEOWISE Observations of the Hilda Population:…

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We present thermal 24 $\mu$m observations from the \textit{Spitzer Space Telescope} of 62 Hilda asteroid group members with diameters ranging from 3 to 12 kilometers. Measurements of the thermal emission when combined with reported absolute…

地球与行星天体物理 · 物理学 2015-05-27 Erin Lee Ryan , Charles E. Woodward

We present updated/new thermal model fits for 478 Jovian Trojan asteroids observed with the Wide-field Infrared Survey Explorer (WISE). Using the fact that the two shortest bands used by WISE, centered on 3.4 and $4.6\mu$m, are dominated by…

地球与行星天体物理 · 物理学 2015-06-11 Tommy Grav , Amy K. Mainzer , James M. Bauer , Joe R. Masiero , Carrie R. Nugent

We present initial results from the Wide-field Infrared Survey Explorer (WISE), a four-band all-sky thermal infrared survey that produces data well suited to measuring the physical properties of asteroids, and the NEOWISE enhancement to the…

We present the size distribution for Hilda asteroid group using optical survey data obtained by the 8.2 m Subaru Telescope with the Hyper Suprime-Cam. Our unbiased sample consists of 91 Hilda asteroids (Hildas) down to 1~km in diameter. We…

地球与行星天体物理 · 物理学 2018-07-18 Tsuyoshi Terai , Fumi Yoshida

We have combined the NEOWISE and Sloan Digital Sky Survey data to study the albedos of 24,353 asteroids with candidate taxonomic classifications derived using Sloan photometry. We find a wide range of moderate to high albedos for candidate…

地球与行星天体物理 · 物理学 2015-05-30 A. Mainzer , J. Masiero , T. Grav , J. Bauer , D. J. Tholen , R. S. McMillan , E. Wright , T. Spahr , R. M. Cutri , R. Walker , W. Mo , J. Watkins , E. Hand , C. Maleszewski

The NEOWISE dataset offers the opportunity to study the variations in albedo for asteroid classification schemes based on visible and near-infrared observations for a large sample of minor planets. We have determined the albedos for nearly…

地球与行星天体物理 · 物理学 2015-05-30 A. Mainzer , T. Grav , J. Masiero , J. Bauer , E. Hand , D. Tholen , R. S. McMillan , T. Spahr , R. M. Cutri , E. Wright , J. Watkins , W. Mo , C. Maleszewski

Aims: Our aim is to obtain more information about the physical nature of B-type asteroids and extend on the previous work by studying their physical properties derived from fitting an asteroid thermal model to their NASA's Wide-field…

We present revised near-infrared albedo fits of 2835 Main Belt asteroids observed by WISE/NEOWISE over the course of its fully cryogenic survey in 2010. These fits are derived from reflected-light near-infrared images taken simultaneously…

地球与行星天体物理 · 物理学 2015-06-22 Joseph R. Masiero , T. Grav , A. K. Mainzer , C. R. Nugent , J. M. Bauer , R. Stevenson , S. Sonnett

Using albedos from WISE/NEOWISE to separate distinct albedo groups within the Main Belt asteroids, we apply the Hierarchical Clustering Method to these subpopulations and identify dynamically associated clusters of asteroids. While this…

地球与行星天体物理 · 物理学 2015-06-15 Joseph R. Masiero , A. K. Mainzer , J. M. Bauer , T. Grav , C. R. Nugent , R. Stevenson

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

The Hilda population of asteroids is located in a large orbital zone of long-term stability associated with the Jupiter J3/2 mean motion resonance. They are a sister population of the Jupiter Trojans, since both of them are likely made up…

Hilda asteroids, which orbit in a 3:2 resonance with Jupiter, serve as key indicators of dynamical processes in the early solar system. Their spin rates, an important probe of these mechanisms, can constrain their density and collisional…

The cryogenic WISE mission in 2010 was extremely sensitive to asteroids and not biased against detecting dark objects. The albedos of 428 Near Earth Asteroids (NEAs) observed by WISE during its fully cryogenic mission can be fit quite well…

地球与行星天体物理 · 物理学 2016-09-21 Edward L. Wright , Amy Mainzer , Joseph Masiero , Tommy Grav , James Bauer

Determining the binary fraction for a population of asteroids, particularly as a function of separation between the two components, helps describe the dynamical environment at the time the binaries formed, which in turn offers constraints…

地球与行星天体物理 · 物理学 2015-06-23 S. Sonnett , A. Mainzer , T. Grav , J. Masiero , J. Bauer

With the NEOWISE portion of the \emph{Wide-field Infrared Survey Explorer} (WISE) project, we have carried out a highly uniform survey of the near-Earth object (NEO) population at thermal infrared wavelengths ranging from 3 to 22 $\mu$m,…

Only a very small fraction of the asteroid population at size scales comparable to the object that exploded over Chelyabinsk, Russia has been discovered to date, and physical properties are poorly characterized. We present previously…

地球与行星天体物理 · 物理学 2015-06-17 A. Mainzer , J. Bauer , T. Grav , J. Masiero , R. M. Cutri , E. L. Wright , C. R. Nugent , R. Stevenson , E. Clyne , G. Cukrov , F. Masci

The Hilda asteroids are among the least studied populations in the asteroid belt, despite their potential importance as markers of Jupiter's migration in the early Solar system. We present new mid-infrared observations of two notable…

地球与行星天体物理 · 物理学 2021-02-10 C. F. Chavez , T. G. Müller , J. P. Marshall , J. Horner , H. Drass , B. Carter

Current models of Solar System evolution posit that the asteroid populations in resonance with Jupiter are comprised of objects scattered inward from the outer Solar System during a period of dynamical instability. In this paper, we present…

地球与行星天体物理 · 物理学 2017-01-18 Ian Wong , Michael E. Brown

Context. Mars-crossing asteroids (MCs) are a dynamically unstable group between the main belt and the near-Earth populations. Characterising the physical properties of a large sample of MCs can help to understand the original sources of…

地球与行星天体物理 · 物理学 2017-07-12 Víctor Alí-Lagoa , Marco Delbo'

Primitive asteroids include C-, P-, and D-classes, known to be dark and having spectra mostly featureless. They differ in the spectral slope, which ranges from moderate values for C-types, and progressively increases in P- and D-types, the…

地球与行星天体物理 · 物理学 2026-01-27 Noemie El-Bez-Sebastien , Sonia Fornasier , Antoine Seurat , Antonin Wargnier
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