FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2287671453> ?p ?o ?g. }

• W2287671453 endingPage "47" @default.
• W2287671453 startingPage "32" @default.
• W2287671453 abstract "The VIRTIS (Visible, Infrared and Thermal Imaging Spectrometer) instrument aboard the Rosetta spacecraft has performed extensive spectral mapping of the surface of comet 67P/Churyumov-Gerasimenko in the range 0.3–5 µm. The reflectance spectra collected across the surface display a low reflectance factor over the whole spectral range, two spectral slopes in the visible and near-infrared ranges and a broad absorption band centered at 3.2 µm. The first two of these characteristics are typical of dark small bodies of the Solar System and are difficult to interpret in terms of composition. Moreover, solar wind irradiation may modify the structure and composition of surface materials and there is no unequivocal interpretation of these spectra devoid of vibrational bands. To circumvent these problems, we consider the composition of cometary grains analyzed in the laboratory to constrain the nature of the cometary materials and consider results on surface rejuvenation and solar wind processing provided by the OSIRIS and ROSINA instruments, respectively. Our results lead to five main conclusions: (i) The low albedo of comet 67P/CG is accounted for by a dark refractory polyaromatic carbonaceous component mixed with opaque minerals. VIRTIS data do not provide direct insights into the nature of these opaque minerals. However, according to the composition of cometary grains analyzed in the laboratory, we infer that they consist of Fe-Ni alloys and FeS sulfides. (ii) A semi-volatile component, consisting of a complex mix of low weight molecular species not volatilized at T∼220 K, is likely a major carrier of the 3.2 µm band. Water ice contributes significantly to this feature in the neck region but not in other regions of the comet. COOH in carboxylic acids is the only chemical group that encompasses the broad width of this feature. It appears as a highly plausible candidate along with the NH4+ ion. (iii) Photolytic/thermal residues, produced in the laboratory from interstellar ice analogs, are potentially good spectral analogs. (iv) No hydrated minerals were identified and our data support the lack of genetic links with the CI, CR and CM primitive chondrites. This concerns in particular the Orgueil chondrite, previously suspected to have been of cometary origin. (v) The comparison between fresh and aged terrains revealed no effect of solar wind irradiation on the 3.2 µm band. This is consistent with the presence of efficient resurfacing processes such as dust transport from the interior to the surface, as revealed by the OSIRIS camera." @default.
• W2287671453 created "2016-06-24" @default.
• W2287671453 creator A5000746440 @default.
• W2287671453 creator A5004700488 @default.
• W2287671453 creator A5011314399 @default.
• W2287671453 creator A5011608816 @default.
• W2287671453 creator A5013328342 @default.
• W2287671453 creator A5015732704 @default.
• W2287671453 creator A5016531352 @default.
• W2287671453 creator A5017965261 @default.
• W2287671453 creator A5018461047 @default.
• W2287671453 creator A5026936862 @default.
• W2287671453 creator A5028711445 @default.
• W2287671453 creator A5031146018 @default.
• W2287671453 creator A5034334934 @default.
• W2287671453 creator A5037240338 @default.
• W2287671453 creator A5040819767 @default.
• W2287671453 creator A5043751842 @default.
• W2287671453 creator A5045150292 @default.
• W2287671453 creator A5054178676 @default.
• W2287671453 creator A5054651870 @default.
• W2287671453 creator A5055264135 @default.
• W2287671453 creator A5059784242 @default.
• W2287671453 creator A5062918322 @default.
• W2287671453 creator A5063118619 @default.
• W2287671453 creator A5065396230 @default.
• W2287671453 creator A5066796274 @default.
• W2287671453 creator A5067157184 @default.
• W2287671453 creator A5067952080 @default.
• W2287671453 creator A5068139279 @default.
• W2287671453 creator A5069514436 @default.
• W2287671453 creator A5070128091 @default.
• W2287671453 creator A5076891833 @default.
• W2287671453 creator A5077038469 @default.
• W2287671453 creator A5079335002 @default.
• W2287671453 creator A5080544565 @default.
• W2287671453 creator A5080641936 @default.
• W2287671453 creator A5082819947 @default.
• W2287671453 creator A5089384364 @default.
• W2287671453 date "2016-07-01" @default.
• W2287671453 modified "2023-10-18" @default.
• W2287671453 title "Refractory and semi-volatile organics at the surface of comet 67P/Churyumov-Gerasimenko: Insights from the VIRTIS/Rosetta imaging spectrometer" @default.
• W2287671453 cites W1835085974 @default.
• W2287671453 cites W1848572254 @default.
• W2287671453 cites W1909446430 @default.
• W2287671453 cites W1913441986 @default.
• W2287671453 cites W1963834579 @default.
• W2287671453 cites W1965762215 @default.
• W2287671453 cites W1978273299 @default.
• W2287671453 cites W1979128266 @default.
• W2287671453 cites W1981644447 @default.
• W2287671453 cites W1983788654 @default.
• W2287671453 cites W1985672557 @default.
• W2287671453 cites W1986340820 @default.
• W2287671453 cites W1986561461 @default.
• W2287671453 cites W1986669188 @default.
• W2287671453 cites W1986961200 @default.
• W2287671453 cites W1987354490 @default.
• W2287671453 cites W1992460319 @default.
• W2287671453 cites W1993610877 @default.
• W2287671453 cites W1997815756 @default.
• W2287671453 cites W1998572675 @default.
• W2287671453 cites W2004371090 @default.
• W2287671453 cites W2009686453 @default.
• W2287671453 cites W2010640978 @default.
• W2287671453 cites W2011126193 @default.
• W2287671453 cites W2012603103 @default.
• W2287671453 cites W2016767408 @default.
• W2287671453 cites W2023900419 @default.
• W2287671453 cites W2024810843 @default.
• W2287671453 cites W2028755602 @default.
• W2287671453 cites W2032903804 @default.
• W2287671453 cites W2033688233 @default.
• W2287671453 cites W2043189066 @default.
• W2287671453 cites W2044656277 @default.
• W2287671453 cites W2057818691 @default.
• W2287671453 cites W2062775626 @default.
• W2287671453 cites W2063419958 @default.
• W2287671453 cites W2066968156 @default.
• W2287671453 cites W2070751667 @default.
• W2287671453 cites W2071506980 @default.
• W2287671453 cites W2072634706 @default.
• W2287671453 cites W2079091900 @default.
• W2287671453 cites W2079958881 @default.
• W2287671453 cites W2081053271 @default.
• W2287671453 cites W2086193543 @default.
• W2287671453 cites W2086227420 @default.
• W2287671453 cites W2088074234 @default.
• W2287671453 cites W2089914286 @default.
• W2287671453 cites W2091213758 @default.
• W2287671453 cites W2091214822 @default.
• W2287671453 cites W2092609569 @default.
• W2287671453 cites W2095978718 @default.
• W2287671453 cites W2099812617 @default.
• W2287671453 cites W2100434756 @default.
• W2287671453 cites W2111490211 @default.
• W2287671453 cites W2113820811 @default.
• W2287671453 cites W2113926325 @default.

• next