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The distribution of surface classes of resonant trans-Neptunian objects (TNOs) provides constraints on the protoplanetesimal disk and giant planet migration. To better understand the surfaces of TNOs, the Colours of the Outer Solar System…

We use an end-to-end model of planet formation, thermodynamic evolution, and atmospheric escape to investigate how the statistical imprints of evaporation depend on the bulk composition of planetary cores (rocky vs. icy). We find that the…

地球与行星天体物理 · 物理学 2018-02-14 Sheng Jin , Christoph Mordasini

Paper I described the normal features of the North Equatorial Belt (NEB) in recent years, especially the large dark formations which are thought to represent waves in the prograde jet on the NEB south edge (NEBs, 7N), and the NEB expansion…

地球与行星天体物理 · 物理学 2018-09-27 John H. Rogers

The evolution of thousands of orbits of Jupiter-family comets and asteroids under the gravitational influence of planets was calculated. Comparison of the results obtained by a symplectic method with those obtained by direct integration…

天体物理学 · 物理学 2011-04-12 S. I. Ipatov

We report the discovery of the minor planet 2013 SY$_{99}$, on an exceptionally distant, highly eccentric orbit. With a perihelion of 50.0 au, 2013 SY$_{99}$'s orbit has a semi-major axis of $730 \pm 40$ au, the largest known for a…

We examine the dynamics of small bodies in orbits similar to that of comet 29P/Schwassmann-Wachmann 1, i.e. near-circular orbits between Jupiter and Saturn. As of late 2019, there are 14 other known bodies in this region that lie in similar…

地球与行星天体物理 · 物理学 2021-02-17 Andrew C. Roberts , Marco A. Muñoz-Gutiérrez

Colors of Trans Neptunian Objects (TNOs) are used to study the evolutionary processes of bodies in the outskirts of the Solar System, and to test theories regarding their origin. Here I describe a search for serendipitous Sloan Digital Sky…

地球与行星天体物理 · 物理学 2015-06-04 Eran O. Ofek

Determining the distribution and spectral signature of volatile ices and organics exposed on icy body surfaces can provide crucial clues for deciphering how the outer solar system formed and evolved. Over the past few decades, ground- and…

地球与行星天体物理 · 物理学 2019-03-20 Richard J. Cartwright , Bryan Holler , Susan Benecchi , Roser Juanola-Parramon , Giada Arney , Aki Roberge , Heidi Hammel

All the Trojan asteroids orbit about the Sun at roughly the same heliocentric distance as Jupiter. Differences in the observed visible reflection spectra range from neutral to red, with no ultra-red objects found so far. Given that the…

天体物理学 · 物理学 2008-01-17 M. D. Melita , J. Licandro , Jones , D. C. , I. P. Williams

Most known trans-Neptunian objects (TNOs) gravitationally scattering off the giant planets have orbital inclinations consistent with an origin from the classical Kuiper belt, but a small fraction of these "scattering TNOs" have inclinations…

We have carried out long-term (14 years) V and R photometric monitoring of 12 carbon-rich proto-planetary nebulae. The light and color curves display variability in all of them. The light curves are complex and suggest multiple periods,…

太阳与恒星天体物理 · 物理学 2014-11-20 Bruce J. Hrivnak , Wenxian Lu , Richard E. Maupin , Bradley D. Spitzbart

Relatively long-period nonsynchronized planets---such as warm Jupiters---potentially retain the primordial rotation, eccentricity, and obliquity that might encapsulate information on planetary climate and formation processes. To date, there…

地球与行星天体物理 · 物理学 2019-03-20 Kazumasa Ohno , Xi Zhang

Physical characterization of Trans-Neptunian objects, a primitive population of the outer solar system, may provide constraints on their formation and evolution. The goal of this work is to characterize a set of 15 scattered disk (SDOs) and…

(Abridged) New optical colors of 58 objects in mean motion resonances with Neptune show the various resonant populations have significantly different color distributions. The 5:3 and 7:4 resonances have semi-major axes near the middle of…

地球与行星天体物理 · 物理学 2015-06-11 Scott S. Sheppard

The irradiation of close-in planets by their star influences their evolution and might be responsible for a population of ultra-short period planets eroded to their bare core. In orbit around a bright, nearby G-type star, the super-Earth 55…

地球与行星天体物理 · 物理学 2018-07-25 V. Bourrier , D. Ehrenreich , A. Lecavelier des Etangs , T. Louden , P. J. Wheatley , A. Wyttenbach , A. Vidal-Madjar , B. Lavie , F. Pepe , S. Udry

This brief review will discuss the current knowledge on the origin and evolution of the nitrogen atmospheres of the icy bodies in the solar system, particularly of Titan, Triton and Pluto. An important tool to analyse and understand the…

地球与行星天体物理 · 物理学 2020-11-03 M. Scherf , H. Lammer , N. V. Erkaev , K. E. Mandt , S. E. Thaller , B. Marty

AIMS: The main goal of this work is to study possible signs of asymmetry in the bright optical transient in NGC300, with the aim of getting independent information on the explosion mechanism, the progenitor star and its circumstellar…

太阳与恒星天体物理 · 物理学 2015-05-13 F. Patat , J. R. Maund , S. Benetti , M. -T. Botticella , E. Cappellaro , A. Harutyunyan , M. Turatto

The 5:3 and 7:4 mean motion resonances of Neptune are at 42.3 and 43.7 au, respectively, and overlap with objects in the Classical trans-neptunian belt (Kuiper belt). We report the complete/partial lightcurves of 13 and 14 trans-Neptunian…

地球与行星天体物理 · 物理学 2024-02-09 Audrey Thirouin , Scott S. Sheppard

The relative abundance of deuterium and hydrogen is a potent tracer of planet formation and evolution. Jupiter and Saturn have protosolar atmospheric D/H ratios, a relic of substantial gas accretion from the nebula, while the atmospheres of…