Results 1 to 10 of about 113,206 (352)

DO GENETICALLY RELATED COMET PAIRS AND GROUPS EXIST?

Odessa Astronomical Publications, 2017
In connection with the discoveries of the new comets 1982b and 1982c, 1988e and 1988g, the orbits of which have the essentially similar elements, the problem of existence of the cometary groups with the similar orbits and their genetical relationship are
I. S. Shestaka
doaj   +1 more source

Weak disorder for low dimensional polymers: The model of stable laws [PDF]

, 2006
In this paper, we consider directed polymers in random environment with long range jumps in discrete space and time. We extend to this case some techniques, results and classifications known in the usual short range case.
Comets, Francis
core   +2 more sources

Comprehensive Analyses of the Strongly Carbon-chain Depleted Comets in Lowell Observatory’s Narrowband Photometry Database

The Planetary Science Journal
We present measurements, analyses, and results for the 17 strongly carbon-chain depleted comets in Lowell Observatory’s narrowband photometry database.
Allison N. Bair, David G. Schleicher
doaj   +1 more source

Classification of Subgroups of Solar and Heliospheric Observatory (SOHO) Sungrazing Kreutz Comet Group by the Density-Based Spatial Clustering of Applications with Noise (DBSCAN) Clustering Algorithm

Journal of Astronomy and Space Sciences
Sungrazing comets, known for their proximity to the Sun, are traditionally classified into broad groups like Kreutz, Marsden, Kracht, Meyer, and non-group comets.
Ulkar Karimova, Yu Yi
doaj   +1 more source

Ensemble Properties of Comets in the Sloan Digital Sky Survey

, 2011
We present the ensemble properties of 31 comets (27 resolved and 4 unresolved) observed by the Sloan Digital Sky Survey (SDSS). This sample of comets represents about 1 comet per 10 million SDSS photometric objects.
Abazajian, Abazajian, Abazajian, Abazajian, Adelman-McCarthy, Adelman-McCarthy, Alvarez-Candal, Andrew A. West, Andrew C. Becker, Assandri, A’Hearn, A’Hearn, A’Hearn, Bottke, Brownlee, Buratti, Carvano, Dohnanyi, Doi, Donald P. Schneider, Emery, Fernández, Fukugita, Gillian R. Knapp, Gunn, Gunn, Hogg, Hsieh, Ivezić, Ivezić, Ivezić, Ivezić, James E. Gunn, Jewitt, Jewitt, Jewitt, Jewitt, Jurić, Lamy, Lamy, Lamy, Lamy, Lamy, Larsen, Levison, Lowry, Lowry, Lowry, Lowry, Lynne Jones, Mario Jurić, Mark Claire, Mazzotta Epifani, Michael Solontoi, Milani, Parker, Petrosian, Pier, Reinhard, Robert H. Lupton, Scranton, Sekanina, Smith, Snodgrass, Snodgrass, Soderblom, Solontoi, Steve Kent, Stoughton, Szabó, Tancredi, Tom Quinn, Trujillo, Tubiana, Tucker, Weissman, Whipple, York, Željko Ivezić   +78 more
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Organic Molecules in the Icy Bodies of Planetary Systems – Accepted Notions and New Ideas

Open Astronomy, 2018
Cometary bodies are acknowledged to contain some of the most pristine matter in the Solar System, including ices and minerals. Certain number of previously unidentified spectral emission features detected in comets can be explained as emission by ...
Simonia Irakli, Cruikshank Dale P.
doaj   +1 more source

The Composition of Dust in Jupiter-Family Comets as Inferred from Infrared Spectroscopy

, 2008
We review the composition of Jupiter-family comet dust as inferred from infrared spectroscopy. We find that Jupiter-family comets have 10 micron silicate emission features with fluxes roughly 20-25% over the dust continuum (emission strength 1.20-1.25 ...
Kelley, Michael S., Wooden, Diane H.
core   +1 more source

Digital Archive of the Astrograph Plates Stored at the Inasan Zvenigorod Observatory

Open Astronomy, 2012
The plate collection of the Zvenigorod 40-cm Carl Zeiss astrograph, obtained in 1972-2003, contains direct photographs of star fields, comets, asteroids, Pluto, and Mars. The electronic library of images from photographic plates was created from scanning
Vereshchagin S. V., Chupina N. V.
doaj   +1 more source

Photometry technique to map elements’ distribution on comets’ nuclei surfaces by using the new method.

Iraqi Journal of Physics, 2023
This study is unique in this field. It represents a mix of three branches of technology: photometry, spectroscopy, and image processing. The work treats the image by treating each pixel in the image based on its color, where the color means a specific ...
Ruaa F. Hanash, Salman Z. Khalaf , Khaleel I. Abood   +2 more
doaj   +1 more source

On the Dynamics of Comets in Extrasolar Planetary Systems

, 2019
Since very recently, we acquired knowledge on the existence of comets in extrasolar planetary systems. The formation of comets together with planets around host stars now seems evident.
Beust, Brasser, Brasser, Carusi, Carusi, Cuntz, Eggl, Eiroa, Fouchard, Fouchard, Fouchard, Gonzalez, Hanslmeier, Henry, Kaib, Kaib, Kiefer, Kopparapu, Kovtyukh, Loibnegger, Lovis, Marino, Matrà, Rappaport, Raymond, Rickman, Rickman, Stern, Tuomi, van Belle, Welsh, Welsh, Whipple, Wyatt   +33 more
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