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Related papers: Cosmic Dust: The Ulysses perspective

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It has often been suggested that an alternative to the standard CO/21-cm method for estimating the mass of the interstellar medium (ISM) in a galaxy might be to estimate the mass of the ISM from the continuum dust emission. In this paper,…

Information about the make-up of the galaxy arrives in the Solar system in many forms: photons of different energies, classically collected by ground- and space-based telescopes, neutral and charged atomic particles, and solid macroscopic…

Extensive photometric stellar surveys show that many main sequence stars show emission at infrared and longer wavelengths that is in excess of the stellar photosphere; this emission is thought to arise from circumstellar dust. The presence…

Earth and Planetary Astrophysics · Physics 2015-06-04 Amaya Moro-Martin

We report the discovery of two adjacent jet candidates with a length of about 9 degrees each -- 10 times longer than the largest known jets -- detected by us on 60 and 100 micron IRAS maps, but not observed at any other wavelength. They are…

Astrophysics · Physics 2009-11-10 Ronald Weinberger , Birgit Armsdorfer

Exo-zodiacal dust, exozodi for short, is warm (~300K) or hot (up to ~2000K) dust found in the inner regions of planetary systems around main sequence stars. In analogy to our own zodiacal dust, it may be located in or near the habitable…

Earth and Planetary Astrophysics · Physics 2018-07-24 S. Ertel , O. Absil , D. Defrère , J. -C. Augereau , B. Mennesson

The solar system contains solids of all sizes, ranging from km-size bodies to nano-sized particles. Nanograins have been detected in situ in the Earth's atmosphere, near cometary and giant planet environments, and more recently in the solar…

Earth and Planetary Astrophysics · Physics 2015-06-12 P. Schippers , N. Meyer-Vernet , A. Lecacheux , S. Belheouane , M. Moncuquet , W. S. Kurth , I. Mann , D. G. Mitchell , N. André

We predict the amount of cometary, interplanetary, and interstellar cosmic dust that is to be measured by the Cometary and Interstellar Dust Analyzer (CIDA) and the aerogel collector on-board the Stardust spacecraft during its fly-by of…

Astrophysics · Physics 2009-10-31 Markus Landgraf , Michael Müller , Eberhard Grün

Debris discs are dusty belts of planetesimals around main-sequence stars, similar to the asteroid and Kuiper belts in our solar system. The planetesimals cannot be observed directly, yet they produce detectable dust in mutual collisions.…

Earth and Planetary Astrophysics · Physics 2019-06-26 Nicole Pawellek , Attila Moór , Ilaria Pascucci , Alexander V. Krivov

Galaxy-scale outflows are of critical importance for galaxy formation and evolution. Dust grains are the main sites for the formation of molecules needed for star formation but are also important for the acceleration of outflows that can…

Debris disks are thought to be sculptured by neighboring planets. The same is true for the Edgeworth-Kuiper debris disk, yet no direct observational evidence for signatures of giant planets in the Kuiper belt dust distribution has been…

Earth and Planetary Astrophysics · Physics 2015-06-19 Christian Vitense , Alexander V. Krivov , Torsten Löhne

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…

Debris disks are dusty, gas-poor disks around main sequence stars (Backman & Paresce 1993; Lagrange, Backman & Artymowicz 2000; Zuckerman 2001). Micron-sized dust grains are inferred to exist in these systems from measurements of their…

Astrophysics · Physics 2007-05-23 Christine H. Chen

Outflows of pre-main-sequence stars drive shocks into molecular material within 0.01 - 1 pc of the young stars. The shock-heated gas emits infrared, millimeter and submillimeter lines of many species including. Dust grains are important…

Astrophysics · Physics 2010-12-13 T. W. Hartquist , S. Van Loo , S. A. E. G. Falle , P. Caselli , I. Ashmore

Recent space missions have provided information on the physical and chemical properties of interstellar grains such as the ratio $\beta$ of radiation pressure to gravity acting on the grains in addition to the composition, structure, and…

Astrophysics of Galaxies · Physics 2017-04-19 Hiroshi Kimura

Using the Moon to occult the Sun, the Clementine spacecraft used its navigation cameras to map the inner zodiacal light at optical wavelengths over elongations of 3-30 degrees from the Sun. This surface brightness map is then used to infer…

Astrophysics · Physics 2009-11-07 J. M. Hahn , H. A. Zook , B. Cooper , B. Sunkara

The orbital distributions of dust particles in interplanetary space are inferred from several meteoroid data sets under the constraints imposed by the orbital evolution of the particles due to the planetary gravity and Poynting-Robertson…

Earth and Planetary Astrophysics · Physics 2019-02-11 Valeri V. Dikarev , Eberhard Grün , William J. Baggaley , David P. Galligan , Markus Landgraf , Rüdiger Jehn

The presence of debris disks around $\sim$ 1-Gyr-old main sequence stars suggests that an appreciable amount of dust may persist even in mature planetary systems. Here we report the detection of dust emission from 55 Cancri, a star with…

Precise-Doppler experiments suggest that a massive (m sin i=0.86 M_J) planet orbits at semimajor axis a=3.4 AU around Epsilon Eridani, a nearby star with a massive debris disk. The dynamical perturbations from such a planet would mold the…

Astrophysics · Physics 2009-11-10 Sean M. Moran , Marc J. Kuchner , Matthew J. Holman