冒失
发表于 2025-3-30 08:17:21
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愤世嫉俗者
发表于 2025-3-30 14:21:07
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Asperity
发表于 2025-3-30 16:58:39
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Resection
发表于 2025-3-30 20:59:10
Rocky Cometary Particulates: Their Elemental, Isotopic and Mineralogical Ingredientsn 1986. The dust analysis was performed by time-of-flight mass-spectrometry. Within the experimental uncertainty the mean abundances of the rock-forming elements in cometary dust particles are comparable to their abundances in CI-chondrites and in the solar photosphere, i.e. they are cosmic. H, C.,
Kernel
发表于 2025-3-31 02:10:07
The Silicate Material in Cometsemperatures. The mineral identifications from the 10 and 20 μm cometary spectra are consistent with the composition of anhydrous chondritic aggregate IDPs. The origin of the cometary silicates remains puzzling. While the evidence from the IDPs points to a pre-solar origin of both crystalline and gla
开花期女
发表于 2025-3-31 09:05:19
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Mammal
发表于 2025-3-31 12:37:18
From Coma Abundances to Nucleus Compositionhe old view was to use coma abundances directly for the chemical composition of the nucleus. However, since the composition of the coma changes with heliocentric distance, ., the new view is that the nucleus composition must be determined from analysis of coma mixing ratios as a function of .. Takin
expunge
发表于 2025-3-31 14:12:20
On The Prediction of CO Outgassing from Comets Hale-Bopp and Wirtanenseveral apparitions from long-period Comet Hale-Bopp and short-period Comet Wirtanen. The comet model assumes a spherical, porous body containing a dust component, one major ice component (H.O), and one minor ice component of higher volatility (CO). The initial chemical composition is assumed to be