標(biāo)題: Titlebook: H II Regions and Related Topics; Proceedings of a Sym T. L. Wilson,D. Downes Conference proceedings 1975 Springer-Verlag Berlin Heidelberg [打印本頁] 作者: 自由 時間: 2025-3-21 17:59
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書目名稱H II Regions and Related Topics讀者反饋學(xué)科排名
作者: 羽毛長成 時間: 2025-3-21 23:17
Recent interstellar molecular line work,de, H.C.HCN, formic acid, HCOOH, dimethyl ether (CH.).O and isotopically labelled cyanoacetylene — .C,HC.CCN and HCC.CN. The data on cyanoacetylene give an . limit to the abundance ratio .C/.C of 36 ± 5. A short discussion of the interstellar chemistry leads to the conclusion that hydrocarbons such 作者: Acquired 時間: 2025-3-22 00:47 作者: cacophony 時間: 2025-3-22 05:38
Selective absorption by dust in H II regions,onized helium abundance are due to selective absorption of the helium ionizing photons by dust in the H II regions. New support comes from mapping of the recombination lines in the Orion Nebula and from detection of He. in the region of the galactic center..The absorption cross section per H-atom fo作者: invade 時間: 2025-3-22 12:33 作者: 健忘癥 時間: 2025-3-22 16:53 作者: entrance 時間: 2025-3-22 17:23 作者: 使習(xí)慣于 時間: 2025-3-22 21:55
W. Mayer zur Capellen,V. Happach,H. Dubbel transfer of the ultra-violet radiation. The balance between atomic and molecular hydrogen is also considered. It is concluded that the H II region exciting star may be, but should not be assumed to be, the source of the photons which ionize carbon in the region giving rise to the observed recombina作者: patella 時間: 2025-3-23 02:29
https://doi.org/10.1007/978-3-662-40998-5de, H.C.HCN, formic acid, HCOOH, dimethyl ether (CH.).O and isotopically labelled cyanoacetylene — .C,HC.CCN and HCC.CN. The data on cyanoacetylene give an . limit to the abundance ratio .C/.C of 36 ± 5. A short discussion of the interstellar chemistry leads to the conclusion that hydrocarbons such 作者: 密切關(guān)系 時間: 2025-3-23 08:25
Brennmaterialien und Feuerungeners calculated for dusty Str?mgren spheres. Preliminary results of this comparison suggest that the dust inside compact H II regions is quite often depleted by large factors, consistent with evaporation of the mantle material of core-mantle particles.作者: Femish 時間: 2025-3-23 12:02
überh?hungsrampe und übergangsbogen.onized helium abundance are due to selective absorption of the helium ionizing photons by dust in the H II regions. New support comes from mapping of the recombination lines in the Orion Nebula and from detection of He. in the region of the galactic center..The absorption cross section per H-atom fo作者: 食料 時間: 2025-3-23 14:33
überh?hungsrampe und übergangsbogenZanstra method in order to derive the rate of stellar ultra-violet photons from hot stars and have studied the relation between the excitation of the nebular spectrum and the spectral type of the exciting star. I wish to show here that dust grains mixed within the ionized gas cannot be an efficient 作者: 樹木中 時間: 2025-3-23 19:27 作者: Cacophonous 時間: 2025-3-24 01:05 作者: 使習(xí)慣于 時間: 2025-3-24 06:10
W. Mayer zur Capellen,V. Happach,H. Dubbelciting star may be, but should not be assumed to be, the source of the photons which ionize carbon in the region giving rise to the observed recombination lines. The origins of the narrow hydrogen and heavier element lines are also discussed.作者: esoteric 時間: 2025-3-24 07:45 作者: Lignans 時間: 2025-3-24 12:07 作者: 分解 時間: 2025-3-24 17:06 作者: 反復(fù)無常 時間: 2025-3-24 21:26
überh?hungsrampe und übergangsbogen.atio..In the solar neighbourhood, the cross section per H-atom for 912>λ>504 is less than the minimum predicted if the number of large grains per H-atom is the same as in the diffuse IS medium. A depletion of large grains in the H II regions by a factor of about 3 is needed to make the cross sections campatible with theory.作者: 矛盾 時間: 2025-3-24 23:51
Selective absorption by dust in H II regions,atio..In the solar neighbourhood, the cross section per H-atom for 912>λ>504 is less than the minimum predicted if the number of large grains per H-atom is the same as in the diffuse IS medium. A depletion of large grains in the H II regions by a factor of about 3 is needed to make the cross sections campatible with theory.作者: 細(xì)微差別 時間: 2025-3-25 04:59
Interpretation of the carbon recombination line,citing star may be, but should not be assumed to be, the source of the photons which ionize carbon in the region giving rise to the observed recombination lines. The origins of the narrow hydrogen and heavier element lines are also discussed.作者: Duodenitis 時間: 2025-3-25 09:33
Recent interstellar molecular line work,ve an . limit to the abundance ratio .C/.C of 36 ± 5. A short discussion of the interstellar chemistry leads to the conclusion that hydrocarbons such as acetylene, HCCH, ethylen, H.CCH. and ethane H.CCH. should be present in interstellar clouds.作者: 駁船 時間: 2025-3-25 13:20 作者: 凌辱 時間: 2025-3-25 16:57 作者: 打谷工具 時間: 2025-3-25 22:24 作者: breadth 時間: 2025-3-26 03:17 作者: 引水渠 時間: 2025-3-26 07:28 作者: FLEET 時間: 2025-3-26 11:52
https://doi.org/10.1007/978-3-662-41023-3The theory of formation of various molecules, both on surfaces of interstellar dust-grains and in gas-phase reactions, is reviewed. Destruction of molecules, the special problems of very dark clouds and the life-history of dust-grains are also reviewed briefly.作者: 最高峰 時間: 2025-3-26 16:27 作者: Chromatic 時間: 2025-3-26 18:47
Statik flüssiger und gasf?rmiger K?rperThis report deals with radio observations of the carbon and narrow hydrogen recombination lines. The theoretical discussion of these data are contained in the paper by Walmsley, in this volume.作者: 從容 時間: 2025-3-26 23:28 作者: 銼屑 時間: 2025-3-27 01:41
https://doi.org/10.1007/978-3-662-24975-8Most infrared sources found at λ < 40μ and associated with HII regions appear to fall into one of three classes which may be loosely referred to as the reddened 0 stars, the compact HII regions and the protostellar objects. However recent observations indicate that the distinction between the last two types is blurred.作者: 可以任性 時間: 2025-3-27 05:34
https://doi.org/10.1007/978-3-662-24974-1A brief account of the techniques used at λ > 40 μm is followed by photometric data, maps of IR regions and spectral data. In particular the He./H. ratio is discussed and new features on maps of W3 and the Galactic Centre are presented.作者: 火車車輪 時間: 2025-3-27 10:01 作者: 可耕種 時間: 2025-3-27 15:53 作者: jagged 時間: 2025-3-27 17:50 作者: 含水層 時間: 2025-3-27 21:56 作者: 胖人手藝好 時間: 2025-3-28 03:40
The early stages of HII regions,A model for W3(A) is described and the results of the calculations for the dynamical evolution of a compact HII region with a dust front are discussed.作者: DEMN 時間: 2025-3-28 07:46 作者: 范圍廣 時間: 2025-3-28 13:11 作者: Defraud 時間: 2025-3-28 15:01
Compact H II regions, mainly radio observations,Small dense clumps of ionized gas exist during various stages in the evolution of H II regions. They can be manifest as bright rims or as very small, very compact H II regions surrounding new born stars. Examples of both types of objects are given and some speculation is made about how massive stars are formed.作者: 流浪者 時間: 2025-3-28 19:17 作者: CAMEO 時間: 2025-3-29 01:34 作者: Gudgeon 時間: 2025-3-29 07:08 作者: Terminal 時間: 2025-3-29 09:57
Masers associated with galactic H II regions,iscovered in our Galaxy. This report deals with three problems: (a) a pumping mechanism for OH and H.O masers; (2) formation of maser condensations; (3) mechanisms for the polarization of maser emission. We then summarize the complete picture for OH and H.O maser emission.作者: arrhythmic 時間: 2025-3-29 14:19 作者: NEX 時間: 2025-3-29 19:03
https://doi.org/10.1007/978-3-662-30404-4s density in the envelope pushes the Str?mgren sphere of the star onto the stellar surface. We suggest that in the neutral gas envelope close to the star the conditions are favourable for SiO maser formation. More specifically we propose that the BN object is the source of maser emission observed in作者: 上釉彩 時間: 2025-3-29 22:16 作者: judicial 時間: 2025-3-30 02:29 作者: Schlemms-Canal 時間: 2025-3-30 05:04
Dennis Matotek,James Turnbull,Peter Lieverdinkf this lower bound. We then see how to improve this relation in the case of Sturmian words where the product of the smallest frequency and the recurrence function is bounded for most of the lengths of factors. We also indicate how to construct Sturmian words having a prescribed behaviour for the sma作者: progestogen 時間: 2025-3-30 09:00 作者: Gossamer 時間: 2025-3-30 16:04
Population Characterization in Location Modeling: Alternatives, Impacts, and Insights, phone data. Analysis results show that solutions generated based on where people live can be far from the optimal that considers the temporal variability of population distributions. Discussion is provided on ways to remedy the issue.作者: Stricture 時間: 2025-3-30 17:33
Soziale Systeme und Sinnstrukturen als transintentionale Folgen des Handelns. Eine Analyse der Beitr auseinandergesetzt. Marx hat sich an vielen Stellen intensiv mit der ibn irritierenden Selbstverst?ndigkeit und Selbstverst?ndlichkeit gesellschaftlicher Bestimmungen und Beziehungen auseinandergesetzt. Er tat das ohne eine ausgearbeitete Theorie sozialer und kultureller Zusammenh?nge, ohne Handlun作者: Introduction 時間: 2025-3-30 23:13 作者: Expiration 時間: 2025-3-31 04:27
Kirby Deater-Deckard,Mamatha Chary,Sarah McCormickummit did eventually emerge. As it turned out, Bob Geldolf’s 200,000 strong . march in Edinburgh snatched most of the attention. But all such news was swept aside in the wake of the London underground bombings at the beginning of the summit. In this light, anarchist posturing seemed even more petula
