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相关论文: SAFARI: Searching Asteroids For Activity Revealing…

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We present an approach that significantly increases the sensitivity for finding and tracking small and fast near Earth asteroids (NEA's). This approach relies on a combined use of a new generation of high-speed cameras which allow short,…

天体物理仪器与方法 · 物理学 2014-08-20 Michael Shao , Bijan Nemati , Chengxing Zhai , Slava G. Turyshev , Jagmit Sandhu , Gregg W. Hallinan , Leon K. Harding

This White Pape motivates the time domain extragalactic science case for the NASA Near-Earth Object Camera (NEOCam). NEOCam is a NASA Planetary mission whose goal is to discover and characterize asteroids and comets, to assess the hazard to…

星系天体物理 · 物理学 2019-04-15 Nicholas P. Ross , Roberto J. Assef , Matthew J. Graham , J. Davy Kirkpatrick

We propose a low-cost robotic optical survey aimed at $1-300$ m Near Earth Objects (NEO) based on four state-of-the-art telescopes having extremely wide field of view. The small Near-Earth Asteroids (NEA) represent a potential risk but also…

天体物理仪器与方法 · 物理学 2014-01-29 P. Vereš , J. Tóth , R. Jedicke , J. Tonry , L. Denneau , R. Wainscoat , L. Kornoš , J. Šilha

The seven known main belt comets (MBCs) have orbital characteristics of main belt asteroids yet exhibit dust ejection like comets. In order to constrain their physical and orbital properties we searched the Thousand Asteroid Light Curve…

地球与行星天体物理 · 物理学 2011-08-17 S. Sonnett , J. Kleyna , R. Jedicke , J. Masiero

High quality infrared spectra of active galaxies including the stellar absorption features of Si at 1.59 um, CO(6,3) at 1.62 um, and CO(2,0) at 2.29 um are used to measure the stellar mass to light ratio at 1.65 um (M_H/L) and investigate…

天体物理学 · 物理学 2007-05-23 E. Oliva , L. Origlia , R. Maiolino , A. F. M. Moorwood

It is speculated that some weakly active comets may be transitional objects between active and dormant comets. These objects are at a unique stage of the evolution of cometary nuclei, as they are still identifiable as active comets, in…

地球与行星天体物理 · 物理学 2016-08-07 Quan-Zhi Ye , Man-To Hui , Peter G. Brown , Margaret D. Campbell-Brown , Petr Pokorný , Paul A. Wiegert , Xing Gao

(2060) Chiron is a large centaur that has been reported active on multiple occasions including during aphelion passage. Studies of Chirons coma during active periods have resulted in the detection of C(triple)N and CO outgassing.…

We study the distributions of effective diameter ($D$), beaming parameter ($\eta$), and visible geometric albedo ($p_V$) of asteroids in cometry orbits (ACOs) populations, derived from NASA's Wide-field Infrared Explorer (WISE)…

地球与行星天体物理 · 物理学 2015-12-16 J. Licandro , V. Ali-Lagoa , G. Tancredi , Y. Fernandez

We present our 500 pc distance-limited study of stellar fares using the Dark Energy Camera as part of the Deeper, Wider, Faster Program. The data was collected via continuous 20-second cadence g band imaging and we identify 19,914 sources…

We present an asteroidal catalog from the mid-infrared wavelength region using the slow-scan observation mode obtained by the Infrared Camera (IRC) on-board the Japanese infrared satellite AKARI. An archive of IRC slow-scan observations…

地球与行星天体物理 · 物理学 2015-06-11 Sunao Hasegawa , Thomas G. Mueller , Daisuke Kuroda , Satoshi Takita , Fumihiko Usui

While proper orbital elements are currently available for more than 1 million asteroids, taxonomical information is still lagging behind. Surveys like SDSS-MOC4 provided preliminary information for more than 100,000 objects, but many…

地球与行星天体物理 · 物理学 2023-11-08 Valerio Carruba , Júlio I. B. Camargo , Safwan Aljbaae , 51 co-authors , DES Collaboration

The Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) reactivation mission has completed its third year of surveying the sky in the thermal infrared for near-Earth asteroids and comets. NEOWISE collects simultaneous…

地球与行星天体物理 · 物理学 2017-10-04 Joseph R. Masiero , C. Nugent , A. K. Mainzer , E. L. Wright , J. M. Bauer , R. M. Cutri , T. Grav , E. Kramer , S. Sonnett

Centaurs are small Solar System objects on chaotic orbits in the giant planet region, forming an evolutionary continuum with the Kuiper belt objects and Jupiter-family comets. Some Centaurs are known to exhibit cometary activity, though…

We propose to use a modest fraction of the re-purposed Kepler mission time and apertures to greatly increase the quantity and quality of our knowledge of near-Earth asteroids (NEAs) rotation and shape. NEAs are important for understanding…

地球与行星天体物理 · 物理学 2013-09-11 Martin Elvis , José Luis Galache , Gareth V. Williams

Knowledge of water in the solar system is important for understanding of a wide range of evolutionary processes and the thermal history of the solar system. To explore the existence of water in the solar system, it is indispensable to…

地球与行星天体物理 · 物理学 2018-12-26 Fumihiko Usui , Sunao Hasegawa , Takafumi Ootsubo , Takashi Onaka

We used binary octahedrons to investigate the dynamical behaviors of binary asteroid systems. The mutual potential of the binary polyhedron method is derived from the fourth order to the sixth order. The irregular shapes, relative orbits,…

地球与行星天体物理 · 物理学 2018-10-10 Yu Jiang , Hexi Baoyin , Mo Yang

The quasi-Hilda object, 212P/2000YN30 with a cometary-like orbit, was found to display a dust tail structure between January and March, 2009. From orbital calculations, it is shown that this object could have been an active comet in its…

太阳与恒星天体物理 · 物理学 2015-06-15 Y. -C. Cheng , W. -H. Ip

The Kepler mission, despite its conclusion over a decade ago, continues to offer a rich dataset for uncovering new astrophysical objects and phenomena. In this study, we conducted a comprehensive search for exocometary transit signatures…

地球与行星天体物理 · 物理学 2026-01-14 Pierre Dumond , Alain Lecavelier des Etangs , Flavien Kiefer , Guillaume Hébrard , Vincent Caillé

The binary status of gamma-Cas stars has been discussed while theoretically examining the origin of their peculiar X-ray emission. However, except in two cases, no systematic radial velocity monitoring of these stars had been undertaken yet…

太阳与恒星天体物理 · 物理学 2022-01-12 Yael Naze , Gregor Rauw , Stefan Czesla , Myron A. Smith , Jan Robrade