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Distance estimates derived from spectroscopy or parallax have been unified by considering extinction by large grains. The addition of such a population of what is called Dark Dust to models of the diffuse interstellar medium is tested…

Astrophysics of Galaxies · Physics 2023-02-22 Ralf Siebenmorgen

The large and tidally-locked classical moons of Uranus display longitudinal and planetocentric trends in their surface compositions. Spectrally red material has been detected primarily on the leading hemispheres of the outer moons, Titania…

Earth and Planetary Astrophysics · Physics 2018-07-04 Richard J. Cartwright , Joshua P. Emery , Noemi Pinilla-Alonso , Michael P. Lucas , Andy S. Rivkin , David E. Trilling

In recent years, evidence has been obtained that in the outer region of the Solar System (in the inner part of the Oort cloud), at a distance $\sim300-700$ AU from the Sun, there may be a captured planet or a primordial black hole. In this…

Earth and Planetary Astrophysics · Physics 2024-01-10 Yu. N. Eroshenko , E. A. Popova

Recent interferometric surveys of nearby main-sequence stars show a faint but significant near-infrared excess in roughly two dozen systems, i.$\,$e. around $10\,\%$ to $30\,\%$ of stars surveyed. This excess is attributed to dust located…

Solar and Stellar Astrophysics · Physics 2017-02-01 Florian Kirchschlager , Sebastian Wolf , Alexander V. Krivov , Harald Mutschke , Robert Brunngräber

Recent optical and submillimeter observations have begun to probe the existence of dust grains in the halos of spiral galaxies. I review our own work in this area which employs high-resolution optical images of edge-on spiral galaxies to…

Astrophysics · Physics 2009-10-31 J. Christopher Howk

Aims. In this work, we present an extended study of the dust environment of a sample of short period comets and their dynamical history. With this aim, we characterized the dust tails when the comets are active, and we made a statistical…

In the leading theory of lunar formation, known as the giant impact hypothesis, a collision between two planet-size objects resulted in a young Earth surrounded by a circumplanetary debris disk from which the Moon later accreted. The range…

Earth and Planetary Astrophysics · Physics 2023-07-13 Miles Timpe , Christian Reinhardt , Thomas Meier , Joachim Stadel , Ben Moore

Using the APEX-12m telescope, continuum maps at 350~$\mu$m of eight gas-dust clouds from the southern hemisphere are obtained. Clouds are associated with the regions of massive star and star cluster formation and have dense cores. Core…

Astrophysics of Galaxies · Physics 2023-01-12 L. E. Pirogov

In this paper we discuss the propagation of dust through the interstellar medium (ISM), and describe the destructive effects of stellar winds, jets, and supernova shock waves on interstellar dust. We review the probability that grains…

Astrophysics · Physics 2009-10-30 A. P. Jones , A. G. G. M. Tielens , D. J. Hollenbach , C. F. McKee

Grain-grain collisions shape the 3-dimensional size and velocity distribution of the inner Zodiacal Cloud and the impact rates of dust on inner planets, yet they remain the least understood sink of zodiacal dust grains. For the first time,…

Earth and Planetary Astrophysics · Physics 2024-01-26 Petr Pokorny , Althea V. Moorhead , Marc J. Kuchner , Jamey R. Szalay , David M. Malaspina

Spacecraft investigations during the last ten years have vastly improved our knowledge about dust in the Jovian system. All Galilean satellites, and probably all smaller satellites as well, are sources of dust in the Jovian system. In-situ…

Astrophysics · Physics 2007-05-23 Harald Krueger , Eberhard Gruen

We study the 2018 Martian Global DustStorm (GDS 2018) over the Southern Polar Region using images obtained by the Visual Monitoring Camera (VMC) on board Mars Express during June and July 2018. Dust penetrated into the polar cap region but…

In protoplanetary disks, the distribution and abundance of small (sub)micron grains are important for a range of physical and chemical processes. For example, they dominate the optical depth at short wavelengths and their surfaces are the…

Earth and Planetary Astrophysics · Physics 2016-05-25 Sebastiaan Krijt , Fred J. Ciesla

The in-situ detection of interstellar dust grains in the Solar System by the dust instruments on-board the Ulysses and Galileo spacecraft as well as the recent measurements of hyperbolic radar meteors give information on the properties of…

Astrophysics · Physics 2015-06-24 M. Landgraf , W. J. Baggaley , E. Grün , H. Krüger , G. Linkert

The periodic eclipses of the pre-main-sequence binary, KH 15D, have been explained by a circumbinary dust ring inclined to the orbital plane, which causes occultations of the stars as they pass behind the ring edge. We compute the…

Astrophysics · Physics 2009-11-13 D. W. Silvia , E. Agol

Mars is the next milestone in human exploration. However, there are still several challenges that must be assessed to ensure appropriate conditions in a future settlement. Communications services will be essential for this task, providing…

Earth and Planetary Astrophysics · Physics 2025-05-01 Zachary C. Rowland , Eva Fernandez Rodriguez

AX J1745.6-2901 is an eclipsing low mass X-ray binary (LMXB) in the Galactic Centre (GC). It shows significant X-ray excess emission during the eclipse phase, and its eclipse light curve shows an asymmetric shape. We use archival XMM-Newton…

High Energy Astrophysical Phenomena · Physics 2018-04-25 Chichuan Jin , Gabriele Ponti , Frank Haberl , Randall Smith , Lynne Valencic

The transfer of material between planetary bodies due to impact events is important for understanding planetary evolution, meteoroid impact fluxes, the formation of near-Earth objects (NEOs), and even the provenance of volatile and organic…

Earth and Planetary Astrophysics · Physics 2025-04-23 Jose Daniel Castro-Cisneros , Renu Malhotra , Aaron J. Rosengren

Parker Solar Probe (PSP) counts dust impacts in the near-solar region, but modelling effort is needed to understand the dust population's properties. We aim to constrain the dust cloud's properties based on the flux observed by PSP. We…

Earth and Planetary Astrophysics · Physics 2024-12-04 Samuel Kočiščák , Audun Theodorsen , Ingrid Mann

An important and perhaps dominant source of dust in the martian atmosphere, dust devils play a key role in Mars' climate. Datasets from previous landed missions have revealed dust devil activity, constrained their structures, and elucidated…

Earth and Planetary Astrophysics · Physics 2021-12-22 Brian Jackson
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