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相关论文: Coherent dust cloud observed by three Cassini inst…

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In most studies of dust in galaxies, dust is only detected from its emission to approximately the optical radius of the galaxy. By combining the signal of 110 spiral galaxies observed as part of the Herschel Reference Survey, we are able to…

The Cassini spacecraft made a gravity assist flyby of Jupiter in December 2000. The Imaging Science Subsystem (ISS) acquired images of the planet that covered the visual range with filters sensitive to the distribution of clouds and hazes,…

地球与行星天体物理 · 物理学 2019-05-09 Iñaki Ordóñez-Etxeberria , Ricardo Hueso , Agustin Sánchez-Lavega , Santiago Pérez-Hoyos

On 17 October 2008, the Cassini spacecraft crossed the southern sources of Saturn kilometric radiation (SKR), while flying along high-latitude nightside magnetic field lines. In situ measurements allowed us to characterize for the first…

地球与行星天体物理 · 物理学 2011-01-21 L. Lamy , P. Schippers , P. Zarka , B. Cecconi , C. Arridge , M. K. Dougherty , P. Louarn , N. Andre , W. S. Kurth , R. L. Mutel , D. A. Gurnett , A. J. Coates

High velocity gas that does not conform to Galactic rotation is observed throughout the Galaxy's halo. One component of this gas, HI high velocity clouds (HVCs), have attracted attention since their discovery in the 1960s and remain…

星系天体物理 · 物理学 2017-08-24 Asger Grønnow , Thor Tepper-García , Joss Bland-Hawthorn , Naomi McClure-Griffiths

One of the puzzles to have emerged from the Kepler and TESS missions is the existence of unexplained dips in the lightcurves of a small fraction of rapidly-rotating M dwarfs in young open clusters and star-forming regions. We present a…

太阳与恒星天体物理 · 物理学 2022-11-30 Hannah Sanderson , Moira Jardine , Andrew Collier Cameron , Julien Morin , Jean-Francois Donati

Saturn's Great Storm of 2010-2011 has produced two stratospheric hot spots, the "beacons," that eventually merged to produce a gigantic one in April and May 2011. This beacon perturbed stratospheric temperatures, hydrocarbon, and water…

地球与行星天体物理 · 物理学 2026-01-29 T. Cavalié , R. Moreno , C. Lefour , B. Benmahi , T. Fouchet , E. Lellouch , É. Ducreux , M. Gurwell , F. Gueth , L. N. Fletcher , D. Bardet

Dust lanes bisect the plane of a typical edge-on spiral galaxy as a dark optical absorption feature. Their appearance is linked to the gravitational stability of spiral disks; the fraction of edge-on galaxies that displays a dust lane is a…

We investigate the dynamics of dust grains with various sizes in protoplanetary disk winds driven by magnetorotational turbulence, by simulating the time evolution of the dust grain distribution in the vertical direction. Small dust grains,…

地球与行星天体物理 · 物理学 2016-04-13 Tomoya Miyake , Takeru K. Suzuki , Shu-ichiro Inutsuka

High-angular resolution imaging by ALMA has revealed the near-universality and diversity of substructures in protoplanetary disks. However, disks around M-type pre-main-sequence stars are still poorly sampled, despite the prevalence of…

Rings are the most frequently revealed substructure in ALMA dust observations of protoplanetary disks, but their origin is still hotly debated. In this paper, we identify dust substructures in 12 disks and measure their properties to…

We present ALMA observations of a small but statistically complete sample of twelve 250 micron selected galaxies at $z=0.35$ designed to measure their dust submillimeter continuum emission as well as their CO(1-0) and atomic carbon…

星系天体物理 · 物理学 2021-11-18 L. Dunne , S. J. Maddox , C. Vlahakis , H. L. Gomez

This paper reports on computational evidence for the formation of cloud-like dust structures around C-rich AGB stars. This spatio-temporal structure formation process is caused by a radiative/thermal instability of dust forming gases as…

天体物理学 · 物理学 2009-11-10 P. Woitke , G. Niccolini

We present 0.075 (~400 pc) resolution ALMA observations of the [CII] and dust continuum emission from the host galaxy of the z=6.5406 quasar, P036+03. We find that the emission arises from a thin, rotating disk with an effective radius of…

Context. Using observations to deduce dust properties, grain size distribution, and physical conditions in molecular clouds is a highly degenerate problem. Aims. The coreshine phenomenon, a scattering process at 3.6 and 4.5 $\mu$m that…

The exact nature of eta Carinae is still an open issue. In this paper we assume a binary system to explain the strong X-ray emission, but we also take into account that, near periastron and because of the highly eccentric orbit, the wind…

天体物理学 · 物理学 2009-11-10 D. Falceta-Goncalves , V. Jatenco-Pereira , Z. Abraham

To contribute to the knowledge of dynamics of interplanetary dust we are searching for structures in the spatial distribution of interplanetary dust near the orbit of Venus. To this end we study the radial gradient of zodiacal light…

天体物理学 · 物理学 2009-11-13 Ch. Leinert , B. Moster

High resolution ALMA observations revealed a variety of rich substructures in numerous protoplanetary disks. These structures consist of rings, gaps and asymmetric features. It is debated whether planets can be accounted for these…

地球与行星天体物理 · 物理学 2021-03-31 Peter J. Rodenkirch , Thomas Rometsch , Cornelis P. Dullemond , Philipp Weber , Wilhelm Kley

We perform axisymmetric hydrodynamical simulations that describe the nonlinear outcome of the viscous overstability in dense planetary rings. These simulations are particularly relevant for Cassini observations of fine-scale structure in…

地球与行星天体物理 · 物理学 2015-05-19 Henrik N. Latter , Gordon I. Ogilvie

For the Mass-loss of Evolved StarS (MESS) programme, the unprecedented spatial resolution of the PACS photometer on board the Herschel space observatory was employed to map the dusty environments of asymptotic giant branch (AGB) and red…

The spin of galaxy clusters encodes key information about their formation, dynamics, and the influence of large-scale structure. However, whether clusters possess statistically significant spin and how to measure it observationally remain…

星系天体物理 · 物理学 2025-11-25 Xiao-xiao Tang , Peng Wang , Yu Rong , Weiguang cui , Min Bao