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The Kuiper belt is a remnant of the primordial Solar System. Measurements of its size distribution constrain its accretion and collisional history, and the importance of material strength of Kuiper belt objects (KBOs). Small, sub-km sized,…

Earth and Planetary Astrophysics · Physics 2015-05-14 H. E. Schlichting , E. O. Ofek , M. Wenz , R. Sari , A. Gal-Yam , M. Livio , E. Nelan , S. Zucker

We now know that the outer solar system is host to at least six diverse planetary ring systems, each of which is a scientifically compelling target with the potential to inform us about the evolution, history and even the internal structure…

The first interstellar object, `Oumuamua, was discovered in the Solar System by Pan-STARRS in 2017, allowing for a calibration of the abundance of interstellar objects of its size and an estimation of the subset of objects trapped by the…

Earth and Planetary Astrophysics · Physics 2019-02-20 Amir Siraj , Abraham Loeb

Planetary debris disks around other stars are analogous to the Asteroid and Kuiper belts in the Solar System. Their structure reveals the configuration of small bodies and provides hints for the presence of planets. The nearby star…

We report the discovery of a low-surface-brightness (27.42 mag arcsec^(-2) in g band) nebula, which has a ring-like shape in the Beijing-Arizona Sky Survey (BASS). Positive detections have been found in multiband data from far ultraviolet…

Astrophysics of Galaxies · Physics 2020-08-11 Wei Zhang , Fan Yang , Hong Wu , Chaojian Wu , Hu Zou , Tianmeng Zhang , Xu Zhou , Fengjie Lei , Junjie Jin , Zhimin Zhou , Jundan Nie , Jun Ma , Jiali Wang

The James Webb Space Telescope (JWST), which has recently become operational, is capable of detecting objects at record-breaking redshifts, $z \gtrsim 15$. This is a crucial advance for observational cosmology, as at these redshifts the…

Cosmology and Nongalactic Astrophysics · Physics 2022-12-14 Nikita Lovyagin , Alexander. Raikov , Vladimir Yershov , Yuri Lovyagin

We describe a powerful signal processing method, the continuous wavelet transform, and use it to analyze radial structure in Cassini ISS images of Saturn's rings. Wavelet analysis locally separates signal components in frequency space,…

JWST will be able to observe the atmospheres of rocky planets transiting nearby M dwarfs. The M dwarf triple star system LTT 1445, at a distance of 6.86 pc, hosts some of the nearest rocky terrestrial planets. These planets most likely…

One of the most surprising discoveries of extrasolar planets is the detection of planets in moderately close binary star systems. The Jovian-type planets in the two binaries of Gamma Cephei and GJ 86 have brought to the forefront questions…

Astrophysics · Physics 2009-09-29 Nader Haghighipour , Steinn Sigurdsson , Jack Lissauer , Sean Raymond

We perform a systematic search for rings around 168 Kepler planet candidates with sufficient signal-to-noise ratios that are selected from all the short-cadence data. We fit ringed and ringless models to their lightcurves, and compare the…

Earth and Planetary Astrophysics · Physics 2018-05-02 Masataka Aizawa , Kento Masuda , Hajime Kawahara , Yasushi Suto

Binary systems containing a magnetic white dwarf and a main-sequence star are considered extremely rare, perhaps non-existent. In the course of a search of magnetic fields in high-mass white dwarfs we have discovered a Sirius-like wide…

Solar and Stellar Astrophysics · Physics 2020-02-12 J. D. Landstreet , S. Bagnulo

Using Spitzer Space Telescope photometric observations of the eclipsing, interacting binary WZ Sge, we have discovered that the accretion disk is far more complex than previously believed. Our 4.5 and 8 micron time series observations…

Batygin and Brown (2016) have suggested the existence of a new Solar System planet supposed to be responsible for the perturbation of eccentric orbits of small outer bodies. The main challenge is now to detect and characterize this putative…

Earth and Planetary Astrophysics · Physics 2017-08-30 Jean Schneider

We present resolved Herschel images of a circumbinary debris disk in the 99 Herculis system. The primary is a late F-type star. The binary orbit is well characterised and we conclude that the disk is misaligned with the binary plane. Two…

Earth and Planetary Astrophysics · Physics 2015-03-20 G. M. Kennedy , M. C. Wyatt , B. Sibthorpe , G. Duchene , P. Kalas , B. C. Matthews , J. S. Greaves , K. Y. L. Su , M. P. Fitzgerald

The technique of transmission spectroscopy -- the variation of the planetary radius with wavelength due to opacity sources in the planet's terminator region -- has been to date one of the most successful in the characterization of exoplanet…

Earth and Planetary Astrophysics · Physics 2021-10-04 Néstor Espinoza , Kathryn Jones

The circumplanetary environments in our Solar System host a stunning array of moon and ring systems. Study of these environs has yielded valuable insights into planetary system formation and evolution, and there is every reason to believe…

Earth and Planetary Astrophysics · Physics 2024-01-25 Alex Teachey

Near- to mid-Infrared observations (from Spitzer and JWST) have revealed a hidden population of galaxies at redshift z=3-6, called optically-dark objects, which are believed to be massive and dusty star-formers. While optically-dark sources…

A unique galaxy at z = 2.2, zC406690, has a striking clumpy large-scale ring structure that persists from rest UV to near-infrared, yet has an ordered rotation and lies on the star-formation main sequence. We combine new JWST/NIRCam and…

The debris disk surrounding the young star TWA 7 exhibits morphological features that tightly constrain its planetary architecture. JWST/MIRI observations have recently revealed a directly imaged outer planet at large separation. The disk…

Earth and Planetary Astrophysics · Physics 2026-03-04 A. Lacquement , H. Beust , G. Duchêne , A. -M. Lagrange

The James Webb Space Telescope (JWST) will allow observations with a unique combination of spectral, spatial, and temporal resolution for the study of outer planet satellites within our Solar System. We highlight the infrared spectroscopy…