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The amount and distribution of water on the lunar surface are related to the input and production of water by solar wind and meteoroid bombardment, balanced by photodestruction and mobility across the surface. Using the Stratospheric…

地球与行星天体物理 · 物理学 2023-02-22 William T. Reach , Paul G. Lucey , Casey I. Honniball , Anicia Arredondo , Erick R. Malaret

The visible reflectance spectrum of many solar system bodies changes with changing viewing geometry for reasons not fully understood. It is often observed to redden (increasing spectral slope) with increasing solar phase angle, an effect…

地球与行星天体物理 · 物理学 2017-01-23 S. E. Schröder , Y. Grynko , A. Pommerol , H. U. Keller , N. Thomas , T. L. Roush

Aims: In this work, we aim to confirm the high albedo of the benchmark ultrahot Neptune LTT9779b using 20 secondary eclipse measurements of the planet observed with CHEOPS. In addition, we perform a search for variability in the reflected…

Mars northern polar latitudes are known to harbor an enhanced 3 ${\mu}$m spectral signature when observed from orbit. This may indicate a greater amount of surface adsorbed or bound water, although it has not yet been possible to easily…

地球与行星天体物理 · 物理学 2021-09-28 Aurélien Stcherbinine , Mathieu Vincendon , Franck Montmessin , Pierre Beck

The photomolecular effect has been hypothesized to enhance evaporation of water at visible wavelengths. This study develops a measurement technique to investigate its presence and magnitude at the liquid-vapor interface of water. The…

光学 · 物理学 2026-03-19 Preston Bohm , Mingjun Li , Akanksha K. Menon , Zhuomin M. Zhang

High precision ephemerides not only support space missions, but can also be used to study the origin and future of celestial bodies. In this paper, a coupled orbit rotation dynamics model that fully takes into account the rotation of the…

地球与行星天体物理 · 物理学 2024-10-30 Yongzhang Yang , Kai Huang , Jianguo Yan , Yuqiang Li

The origin of Phobos and Deimos in a giant impact generated disk is gaining larger attention. Although this scenario has been the subject of many studies, an evaluation of the chemical composition of the Mars' moons in this framework is…

地球与行星天体物理 · 物理学 2018-02-14 Francesco C. Pignatale , Sébastien Charnoz , Pascal Rosenblatt , Ryuki Hyodo , Tomoki Nakamura , Hidenori Genda

We collect well-measured opposition surge properties for many icy bodies orbiting the Sun (mostly from our own observations) plus for many icy moons, resulting in a data base of surface and orbital properties for 52 icy bodies. (1) We put…

天体物理学 · 物理学 2009-11-13 Bradley E. Schaefer , David L. Rabinowitz , Suzanne W. Tourtellotte

In the next decade, two rovers will characterize in situ the mineralogy of rocks on Mars, using for the first time near-infrared reflectance spectrometers: SuperCam onboard the Mars 2020 rover and MicrOmega onboard the ExoMars rover,…

We analyse MESSENGER reflectance measurements covering the northern polar region of Mercury, the least studied region of the northern mercurian hemisphere. We use observations from the Mercury Dual Imaging System Wide-Angle Camera…

地球与行星天体物理 · 物理学 2019-10-14 Nguyen Bich Ngoc , Nicolas Bott , Pham Ngoc Diep

In this paper, we characterize the morphology of the disk-integrated phase functions of satellites and rings around the giant planets of our Solar System. We find that the shape of the phase function is accurately represented by a…

地球与行星天体物理 · 物理学 2015-05-13 Estelle Deau , Luke Dones , Sebastien Rodriguez , Sebastien Charnoz , Andre Brahic

Recent analysis of Gemini-North/NIFS H-band (1.45 - 1.8 $\mu$m) observations of Uranus, recorded in 2010, with recently updated line data has revealed the spectral signature of hydrogen sulphide (H$_2$S) in Uranus's atmosphere (Irwin et…

地球与行星天体物理 · 物理学 2018-12-14 Patrick G. J. Irwin , Daniel Toledo , Ryan Garland , Nicholas A. Teanby , Leigh N. Fletcher , Glenn S. Orton , Bruno Bézard

The Photometric objects Around Cosmic webs (PAC) approach developed in Xu et al. (2022b) has the advantage of making full use of spectroscopic and deeper photometric surveys. With the merits of PAC, the excess surface density…

星系天体物理 · 物理学 2024-05-16 Shanquan Gui , Kun Xu , Y. P. Jing , Donghai Zhao , Hongyu Gao

We present the first comprehensive look at the $0.35-5$ $\mu$m transmission spectrum of the warm ($\sim 800$ K) Neptune HAT-P-11b derived from thirteen individual transits observed using the Hubble and Spitzer Space Telescopes. Along with…

Spectral observations of Neptune made in 2019 with the MUSE instrument at the Very Large Telescope in Chile have been analysed to determine the spatial variation of aerosol scattering properties and methane abundance in Neptune's…

The Mars Science Laboratory Curiosity rover has monitored the Martian environment in Gale crater since landing in 2012. This study reports the record of optical depth derived from visible and near-infrared images of the Sun. Aerosol optical…

Water absorption is identified in the atmosphere of HD209458b by comparing models for the planet's transmitted spectrum to recent, multi-wavelength, eclipse-depth measurements (from 0.3 to 1 microns) published by Knutson et al. (2007). A…

天体物理学 · 物理学 2014-11-18 T. S. Barman

The objective of this work is to obtain an extinction-corrected distribution of optical surface brightness and colour indices of the large nearby galaxy M 31 using homogeneous observational data and a model for intrinsic extinction. We…

宇宙学与河外天体物理 · 物理学 2011-03-14 Elmo Tempel , Taavi Tuvikene , Antti Tamm , Peeter Tenjes

It is expected since the early 1970s that tenuous dust rings are formed by grains ejected from the Martian moons Phobos and Deimos by impacts of hypervelocity interplanetary projectiles. In this paper, we perform direct numerical…

地球与行星天体物理 · 物理学 2022-01-11 Xiaodong Liu , Jürgen Schmidt

We have analyzed observations of the Acidalia hemisphere of Mars taken by the Hubble Space Telescope's Near-Infrared Camera Multi-Object Spectrograph (HST/NICMOS) during July of 1997 (Ls = 152 degrees, northern Martian summer). The data…

天体物理学 · 物理学 2009-11-07 E. Z. Noe Dobrea , J. F. Bell , M. J. Wolff , K. D. Gordon