Results 41 to 50 of about 243 (142)

The striated dust tail of Comet West 1976 VI as a particle fragmentation phenomenon

The Astronomical Journal, 1980
The motions of 16 striae in the dust tail of Comet West are studied. It is found that all 16 striae have originated from particle ejections, and that the particles responsible for the formation of a discrete striae must be emitted simultaneously, be subjected to the same repulsive acceleration in the tail, and break up simultaneously.
Z. Sekanina, J. A. Farrell
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Two dust populations of particle fragments in the striated tail of Comet MRKOS 1957 V

The Astronomical Journal, 1982
The striated tail of Comet Mrkos 1957 V is investigated. The formation and motions of the striae are described by the same particle-fragmentation model that has been successfully applied to Comet West. Two new kinds of striae are discovered, one made of absorbing particles and the other of essentially nonabsorbing ones.
Z. Sekanina, J. A. Farrell
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A Monte Carlo approach to the analysis of the dust tail of comet P/Halley

Icarus, 1992
Abstract A quantitative analysis of three wide-field photographs of Comet P/Halley obtained between 3 and 6 May 1986 has been carried out. The digitally processed maps were used as input for the Monte Carlo approach to interpreting cometary dust tails.
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COMetary dust TAIL Simulator (COMTAILS): A computer code to generate comet dust tail brightness images

Astronomy & Astrophysics
Context. We present the COMetary dust TAIL Simulator (COMTAILS), a numerical Monte Carlo code to generate images of dust tail brightness from comets and active asteroids in the Solar System. Aims. We describe a numerical code, available to interested users, capable of generating simulated images of dust tail brightness for comparison with observations,
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Dust shells and dark linear structures on dust tails of historical and recent long-period comets

Astronomy & Astrophysics
Context. Dust halos or shells, along with linear dark structures along the axes of dust tails, are commonly observed in many long- period comets near perihelion. Examples range from the recent C/2023 A3 (Tsuchinshan-ATLAS) to historical comets such as the Great Comet of 1874, C/1874 H1 (Coggia). Aims.
Fernando Moreno, Emmanuel Jehin
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Comet Tail Analyzer: A GUI Tool for Finson–Probstein Dust-tail Modeling

Research Notes of the AAS
Abstract I present Comet Tail Analyzer , an open-source Python graphical application for projecting Finson–Probstein syndyne and synchrone grids onto comet images. Operating as a forward-modeling tool, the software computes and overlays dust-particle loci on user-supplied ...
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Spectroscopic identification of water emission from a main-belt comet. [PDF]

Nature, 2023
Kelley MSP, Hsieh HH, Bodewits D, Saki M, Villanueva GL, Milam SN, Hammel HB.   +6 more
europepmc   +1 more source

Complex organosulfur molecules on comet 67P: Evidence from the ROSINA measurements and insights from laboratory simulations. [PDF]

Sci Adv, 2023
Mahjoub A, Altwegg K, Poston MJ, Rubin M, Hodyss R, Choukroun M, Ehlmann BL, Hänni N, Brown ME, Blacksberg J, Eiler JM, Hand KP.   +11 more
europepmc   +1 more source

Exocomets size distribution in the [Formula: see text] Pictoris planetary system. [PDF]

Sci Rep, 2022
Lecavelier des Etangs A, Cros L, Hébrard G, Martioli E, Duquesnoy M, Kenworthy MA, Kiefer F, Lacour S, Lagrange AM, Meunier N, Vidal-Madjar A.   +10 more
europepmc   +1 more source

Synthesis of Autofluorescent Phenanthrene Microparticles via Emulsification: A Useful Synthetic Mimic for Polycyclic Aromatic Hydrocarbon-Based Cosmic Dust. [PDF]

ACS Appl Mater Interfaces, 2023
Chan DHH, Wills JL, Tandy JD, Burchell MJ, Wozniakiewicz PJ, Alesbrook LS, Armes SP.   +6 more
europepmc   +1 more source