標(biāo)題: Titlebook: Composition and Origin of Cometary Materials; Proceedings of an IS K. Altwegg,P. Ehrenfreund,W. F. Huebner Conference proceedings 1999 Spri [打印本頁] 作者: Nonchalant 時(shí)間: 2025-3-21 17:52
書目名稱Composition and Origin of Cometary Materials影響因子(影響力)
書目名稱Composition and Origin of Cometary Materials影響因子(影響力)學(xué)科排名
書目名稱Composition and Origin of Cometary Materials網(wǎng)絡(luò)公開度
書目名稱Composition and Origin of Cometary Materials網(wǎng)絡(luò)公開度學(xué)科排名
書目名稱Composition and Origin of Cometary Materials被引頻次
書目名稱Composition and Origin of Cometary Materials被引頻次學(xué)科排名
書目名稱Composition and Origin of Cometary Materials年度引用
書目名稱Composition and Origin of Cometary Materials年度引用學(xué)科排名
書目名稱Composition and Origin of Cometary Materials讀者反饋
書目名稱Composition and Origin of Cometary Materials讀者反饋學(xué)科排名
作者: 出來 時(shí)間: 2025-3-21 20:46
Conference proceedings 1999studentsworking in the field of planetology and solar system exploration.Several special indexes focus the reader‘s attention to detailedresults and discussions. It concludes with recommendations forlaboratory investigations and for advanced modeling of comets, thesolar nebula, and the collapse of i作者: 無聊的人 時(shí)間: 2025-3-22 02:26 作者: insidious 時(shí)間: 2025-3-22 04:59 作者: 甜瓜 時(shí)間: 2025-3-22 11:30
https://doi.org/10.1007/978-3-663-05582-2it difficult to defend an early influx of icy planetesimals from the Jupiter zone to the early Earth. D/H measurements of OH groups in phyllosilicate rich meteorites suggest a mixture of cometary water and water adsorbed from the nebula by the rocky grains that formed the bulk of the Earth may be re作者: 西瓜 時(shí)間: 2025-3-22 13:15 作者: 西瓜 時(shí)間: 2025-3-22 17:54 作者: 遷移 時(shí)間: 2025-3-22 22:54 作者: surrogate 時(shí)間: 2025-3-23 04:21 作者: 撕裂皮肉 時(shí)間: 2025-3-23 06:53 作者: 評(píng)論性 時(shí)間: 2025-3-23 10:59 作者: 紋章 時(shí)間: 2025-3-23 16:57
Composition of the Volatile Material in Halley’s Coma from in Situ Measurementsls, namely CH., seems to be present as such in the cometary ice..As an outlook to the future we present a list of open questions concerning cometary volatiles and a short preview on the next generation of mass spectrometers that are being built for the International Rosetta Mission to explore the co作者: Nucleate 時(shí)間: 2025-3-23 21:58 作者: 最后一個(gè) 時(shí)間: 2025-3-23 22:35 作者: 山頂可休息 時(shí)間: 2025-3-24 05:43
Hale-Bopp and Its Sodium Tailses lower. Spectroscopic observations have been performed on the dust tail, at different beta values, and along the narrow sodium tail showing that the sodium emissions had very different line profiles. The analysis of these profiles will yield important insights into the sources in the inner coma an作者: osteopath 時(shí)間: 2025-3-24 09:12
Rocky Cometary Particulates: Their Elemental, Isotopic and Mineralogical Ingredientse mineralogy of cometary dust can be obtained. Cluster analysis revealed certain groups that partly match the classifications of stratospheric interplanetary dust particles. About half of Halley’s analyzed particles are characterized by anhydrous Fe-poor Mg-silicates, Fesulfides, and rarely Fe metal作者: myriad 時(shí)間: 2025-3-24 12:01 作者: intellect 時(shí)間: 2025-3-24 18:03 作者: Intact 時(shí)間: 2025-3-24 20:44 作者: Chagrin 時(shí)間: 2025-3-25 00:44
On the Flux of Water and Minor Volatiles from the Surface of Comet Nucleirs. From the calculations we obtain temperature profiles and changes in relative chemical abundances, porosity and pore size distribution as a function of depth, and the gas flux into the interior and into the atmosphere for each of the volatiles at various positions of the body in its orbit..In thi作者: 補(bǔ)角 時(shí)間: 2025-3-25 04:48
Space Sciences Series of ISSIhttp://image.papertrans.cn/c/image/231845.jpg作者: 責(zé)問 時(shí)間: 2025-3-25 10:55 作者: Tracheotomy 時(shí)間: 2025-3-25 12:47
978-94-010-5830-8Springer Science+Business Media Dordrecht 1999作者: 使糾纏 時(shí)間: 2025-3-25 16:59
Comet Halley’s Gas Composition and Extended Sources: Results from the Neutral Mass Spectrometer on Gndance of more than 10 parent species. The instrument discovered strong extended H.CO and CO sources in the coma of Comet Halley. Polymerized H.CO associated with the cometary dust and evaporating slowly as the monomer is most likely the extended H.CO source. Photodissociation of the H.CO into CO fully accounts for the extended CO source.作者: acquisition 時(shí)間: 2025-3-25 20:03 作者: 皮薩 時(shí)間: 2025-3-26 00:39 作者: Phenothiazines 時(shí)間: 2025-3-26 06:03
https://doi.org/10.1007/978-3-663-05582-2ent of their abundances is possible by remote sensing. Considerable progress has been made recently using radio and infrared spectroscopy, especially with the observations of the two exceptional comets C/1996 B2 (Hyakutake) and C/1995 01 (Hale-Bopp).) 24 molecules likely to be parent molecules outga作者: frugal 時(shí)間: 2025-3-26 12:29 作者: orient 時(shí)間: 2025-3-26 12:43 作者: concubine 時(shí)間: 2025-3-26 18:56
https://doi.org/10.1007/978-3-663-00126-3non-refractory grains or trapped inside the nucleus “material”. Grains can also be a source of molecules in the coma. Chemical reactions may occur between coma species. Consequently, although chances that an abundant coma species has not been detected are now small, the coma composition is certainly作者: nitric-oxide 時(shí)間: 2025-3-27 00:46
,Versuchspl?ne für komplexe Zusammenh?nge,omponent in the coma, rather than directly from the volatiles in the nucleus. Based on the fluffy aggregate interstellar dust comet model, we have estimated the upper limits of the total amount of CO provided by coma dust. The implications from the comparison of the predicted results with the observ作者: 大量殺死 時(shí)間: 2025-3-27 02:25
,Versuchspl?ne für komplexe Zusammenh?nge,(up to 5 AU). A variety of observing techniques have been used, including radio observations, IR- and UV-measurements. The H.O-production of a comet is closely connected with the energy balance and the composition of its surface. By comparing measured and calculated rates it is possible to derive pr作者: Entreaty 時(shí)間: 2025-3-27 08:25
Varianten der statistischen Versuchsplanung,l detected on a Schmidt plate obtained with a objective prism. Comet Hale-Bopp 1995 O1 offered the first great opportunity to get an image of a long sodium tail. It was more than 3 × 10. km long, defined as a third type of tail, as it was composed only of neutral atoms (Cremonese, 1997a). After the 作者: 軟膏 時(shí)間: 2025-3-27 11:53
Varianten der statistischen Versuchsplanung,n 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., 作者: 使殘廢 時(shí)間: 2025-3-27 16:36
https://doi.org/10.1007/978-3-658-39275-8emperatures. 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作者: 織物 時(shí)間: 2025-3-27 19:08
Methode der kleinsten Quadrate,anetary formation. Flyby missions to Comet P/Halley in 1986 showed that cometary dust is extremely rich in organics (~50% by mass). However, this proportion appears to be variable among different comets. In comparison with the CI-chondritic abundances, the volatile elements H, C., and N are enriched作者: needle 時(shí)間: 2025-3-28 01:23
Ein Bild sagt mehr als tausend Worte,he 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作者: 評(píng)論性 時(shí)間: 2025-3-28 03:08 作者: Terrace 時(shí)間: 2025-3-28 08:39 作者: extinct 時(shí)間: 2025-3-28 12:21
Zusammenfassung, Fazit und Ausblick,substantially consistent with each other in both refractory and volatile components. When limited by relative cosmic abundances the water in comet nuclei is constrained to be close to 30% by mass and the refractory to volatile ratio is close to 1:1. The morphological structure of comet nuclei, as de作者: 捐助 時(shí)間: 2025-3-28 15:41
MANOVA und Diskriminanzanalyse,ces: i) comets with a strong silicate emission feature present a high maximum in polarization, ii) the polarization is always slightly lower than the average in inner comae and stronger in jet-like structures. These results are in excellent agreement with the Greenberg model of dust particles built 作者: 猛擊 時(shí)間: 2025-3-28 19:27
Hauptkomponenten- und Faktoranalyse,ice is presumably amorphous and includes considerable fractions of occluded gases. This structure undergoes significant changes during the early evolution of the nucleus at large heliocentric distances, due to internal radiogenic heating. Structural changes occur mainly as a result of gas flow throu作者: 盡責(zé) 時(shí)間: 2025-3-29 01:45
Composition and Origin of Cometary Materials978-94-011-4211-3Series ISSN 1385-7525 作者: obscurity 時(shí)間: 2025-3-29 03:56
,Versuchsplanung und Parametersch?tzung,ndance of more than 10 parent species. The instrument discovered strong extended H.CO and CO sources in the coma of Comet Halley. Polymerized H.CO associated with the cometary dust and evaporating slowly as the monomer is most likely the extended H.CO source. Photodissociation of the H.CO into CO fully accounts for the extended CO source.作者: 靈敏 時(shí)間: 2025-3-29 11:09
,Versuchspl?ne für komplexe Zusammenh?nge,omponent in the coma, rather than directly from the volatiles in the nucleus. Based on the fluffy aggregate interstellar dust comet model, we have estimated the upper limits of the total amount of CO provided by coma dust. The implications from the comparison of the predicted results with the observed value have been discussed.作者: PAD416 時(shí)間: 2025-3-29 14:16 作者: 物種起源 時(shí)間: 2025-3-29 19:33
Remote Observations of the Composition of Cometary Volatilesent of their abundances is possible by remote sensing. Considerable progress has been made recently using radio and infrared spectroscopy, especially with the observations of the two exceptional comets C/1996 B2 (Hyakutake) and C/1995 01 (Hale-Bopp).) 24 molecules likely to be parent molecules outga作者: 用樹皮 時(shí)間: 2025-3-29 20:43
Cometary Deuteriumevealed the first accurate D/H ratios in the water of Comet 1P/Halley. Ground-based observations of HDO in Comets C/1996 B2 (Hyakutake) and C/1995 01 (Hale-Bopp), the detection of DCN in Comet Hale-Bopp, and upper limits for several other D-bearing molecules complement our limited sample of D/H meas作者: 挑剔小責(zé) 時(shí)間: 2025-3-30 00:23 作者: Inflamed 時(shí)間: 2025-3-30 07:58
On the Existence of Distributed Sources in Comet Comaenon-refractory grains or trapped inside the nucleus “material”. Grains can also be a source of molecules in the coma. Chemical reactions may occur between coma species. Consequently, although chances that an abundant coma species has not been detected are now small, the coma composition is certainly作者: 冒失 時(shí)間: 2025-3-30 08:17 作者: 憤世嫉俗者 時(shí)間: 2025-3-30 14:21 作者: Asperity 時(shí)間: 2025-3-30 16:58 作者: Resection 時(shí)間: 2025-3-30 20:59
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., 作者: Kernel 時(shí)間: 2025-3-31 02:10
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作者: 開花期女 時(shí)間: 2025-3-31 09:05 作者: Mammal 時(shí)間: 2025-3-31 12:37
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作者: expunge 時(shí)間: 2025-3-31 14:12
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
