標題: Titlebook: CNO Isotopes in Astrophysics; Proceedings of a Spe Jean Audouze Conference proceedings 1977 D. Reidel Publishing Company, Dordrecht,Holland [打印本頁] 作者: affected 時間: 2025-3-21 17:42
書目名稱CNO Isotopes in Astrophysics影響因子(影響力)
書目名稱CNO Isotopes in Astrophysics影響因子(影響力)學(xué)科排名
書目名稱CNO Isotopes in Astrophysics網(wǎng)絡(luò)公開度
書目名稱CNO Isotopes in Astrophysics網(wǎng)絡(luò)公開度學(xué)科排名
書目名稱CNO Isotopes in Astrophysics被引頻次
書目名稱CNO Isotopes in Astrophysics被引頻次學(xué)科排名
書目名稱CNO Isotopes in Astrophysics年度引用
書目名稱CNO Isotopes in Astrophysics年度引用學(xué)科排名
書目名稱CNO Isotopes in Astrophysics讀者反饋
書目名稱CNO Isotopes in Astrophysics讀者反饋學(xué)科排名
作者: 厭倦嗎你 時間: 2025-3-21 23:00
https://doi.org/10.1057/9781137455475ction zone penetrates into the interior mixing out material which was processed via the CNO tricycle (Iben 1964, 1966). Comparison of observed isotope ratios (or abundances) with theoretical expectations can then be used as a check on the occurrence of such phenomena as convection, meridional mixing, and mass loss.作者: 能夠支付 時間: 2025-3-22 00:59
https://doi.org/10.1007/978-3-662-66225-0 together with rocket observations of the CO ultraviolet bands (Smith and Stecher, 1969) has provided our total knowledge of the relative abundance of .C in the very local (d < 200 pc) interstellar gas contained in the diffuse clouds typified by the ζOph cloud.作者: inconceivable 時間: 2025-3-22 06:33
CNO Isotopes and Red Giantsction zone penetrates into the interior mixing out material which was processed via the CNO tricycle (Iben 1964, 1966). Comparison of observed isotope ratios (or abundances) with theoretical expectations can then be used as a check on the occurrence of such phenomena as convection, meridional mixing, and mass loss.作者: 話 時間: 2025-3-22 12:17 作者: Aerate 時間: 2025-3-22 13:04 作者: Aerate 時間: 2025-3-22 18:07 作者: resistant 時間: 2025-3-22 23:03 作者: 描繪 時間: 2025-3-23 03:03
https://doi.org/10.1007/978-3-662-66225-0 are similar; thus the ratio of their intensities directly provides an abundance ratio. Whether chemical fractionation of the oxygen isotopes occurs, as it might be the case for the carbon isotopes (Watson, this book), is unknown; thus we do not know to which extent the .O/.O ratio is equal to the C.O/C.O ratio.作者: 感情脆弱 時間: 2025-3-23 07:01 作者: 貴族 時間: 2025-3-23 10:06 作者: 偽書 時間: 2025-3-23 14:55 作者: 小樣他閑聊 時間: 2025-3-23 21:22
Isotope Fractionation in Interstellar Moleculesal electron density and CO abundance — can be derived from the fractionation process producing the enhanced DCO./HCO. ratio. Possible fractionation reactions for isotopes of other elements (oxygen, sulfur) are mentioned briefly.作者: Apraxia 時間: 2025-3-24 00:03 作者: arthroplasty 時間: 2025-3-24 05:12 作者: Customary 時間: 2025-3-24 07:06 作者: 尖酸一點 時間: 2025-3-24 12:35
https://doi.org/10.1007/978-3-662-52815-0Mahoney, McCutcheon and Shuter (1976) reported observations of the J = 1 → 0 transition of three isotopes of CO in the dust cloud Lynds 134 using the 4.6 m telescope at Aerospace Corporation. Here we discuss a new observation of .C.O and consider further the question of the ratio .C.O/.C.O across the dust cloud.作者: HEED 時間: 2025-3-24 16:35
https://doi.org/10.1007/978-3-662-68674-4To derive abundance ratios from measured line intensities several fundamental assumptions are usually made. The two most important of these are that:作者: 懶洋洋 時間: 2025-3-24 21:42 作者: 奇思怪想 時間: 2025-3-25 02:13 作者: nitric-oxide 時間: 2025-3-25 04:26 作者: BANAL 時間: 2025-3-25 09:56
CNO Isotopes in Astrophysics978-94-010-1232-4Series ISSN 0067-0057 Series E-ISSN 2214-7985 作者: 啟發(fā) 時間: 2025-3-25 13:18 作者: Ancillary 時間: 2025-3-25 19:11
https://doi.org/10.1007/978-94-010-1232-4Anomalie; Variation; astrophysics; solar system; solar wind; stars作者: maroon 時間: 2025-3-25 21:46 作者: Bumble 時間: 2025-3-26 02:58 作者: laxative 時間: 2025-3-26 07:22
War, Culture and Society, 1750–1850 are more important than Fe for instance. Historically they have been more difficult to observe in stellar spectra but in spite of these difficulties which have been solved with the development of improved observation techniques and because of their large abundance, as it will be emphasized all thro作者: 符合國情 時間: 2025-3-26 12:22 作者: 拘留 時間: 2025-3-26 13:39 作者: Induction 時間: 2025-3-26 19:48
https://doi.org/10.1057/9781137455475 stage, molecular lines are observed from which CNO isotope ratios and abundances can be determined. It is also during this stage that a surface convection zone penetrates into the interior mixing out material which was processed via the CNO tricycle (Iben 1964, 1966). Comparison of observed isotope作者: BABY 時間: 2025-3-26 23:58 作者: 直覺沒有 時間: 2025-3-27 02:56 作者: Solace 時間: 2025-3-27 08:33 作者: 可行 時間: 2025-3-27 12:44 作者: insurrection 時間: 2025-3-27 14:10 作者: infantile 時間: 2025-3-27 19:05
https://doi.org/10.1007/978-3-662-66225-0e sole exception of the λ4232 line of .CH. which is seen in absorption against ζOph (Bortolot and Thaddeus, 1969; Vanden Bout, 1972). This single line together with rocket observations of the CO ultraviolet bands (Smith and Stecher, 1969) has provided our total knowledge of the relative abundance of作者: Rct393 時間: 2025-3-27 23:53
Desinfektion, Hygiene und Infektionsschutz,ope ratios derived from observations reported up to August 1976. Except for the Orion Molecular Cloud, all H.CO ratios were obtained from the 1.-1. absorption line, at 4.8 GHz. The HC.N data of Churchwell et al. ((1976), ref. 7 in Table 1) were measured at 9 GHz. All other isotope results were obtai作者: 鋼筆尖 時間: 2025-3-28 03:54
https://doi.org/10.1007/978-3-662-68674-4he high vapor pressure of CO may cause a preferential loss of .C from the gas due to freezing onto dust grains. The .c/.c ratio for the carbon in the gas is then raised by factors ～ 2 to 4. Fractionation of deuterium is also discussed since the proposed process is similar to the carbon isotope excha作者: Bronchial-Tubes 時間: 2025-3-28 07:51
War, Culture and Society, 1750–1850cumulated at the present on these elements focusing in particular on their isotopic composition. Study of isotopes is indeed most profitable in the sense that they are less affected than elements by chemical fractionation processes although such processes can be considered and be important (see e.g.作者: 好開玩笑 時間: 2025-3-28 13:04
https://doi.org/10.1007/978-3-663-01782-0 masses and ages, even for a fixed initial metal-abundance. Moreover, comparison of a given star with theoretical models may be rendered somewhat uncertain by errors in parrallax or other criteria of absolute magnitude.作者: Alveoli 時間: 2025-3-28 16:33 作者: 聽寫 時間: 2025-3-28 19:22
Desinfektion, Hygiene und Infektionsschutz,O) ratio, 489, the (.C.S)/(.C.S) value by the terrestrial (.S/.S) ratio, 23, and (H.C.N)/(H.C.N) by the terrestrial (.N/.N) ratio, 269. Wannier et al. (1976) and R. W. Wilson et al. (1976) have argued that the (.O/.O) and (.S/.S) ratios are close to terrestrial, but Linke et al. (1976) conclude that作者: intricacy 時間: 2025-3-28 23:02
Conference proceedings 1977uthors of the papers for their contributions and all the work they have put in the excellent presentation of the material. lowe special thanks to Professor William A. Fowler (Kellogg Laboratory at Cal tech) who has superbly chaired this session and made it very exciting and lively, to Professor Beat作者: Tinea-Capitis 時間: 2025-3-29 03:49
0067-0057 ks to Professor William A. Fowler (Kellogg Laboratory at Cal tech) who has superbly chaired this session and made it very exciting and lively, to Professor Beat978-94-010-1234-8978-94-010-1232-4Series ISSN 0067-0057 Series E-ISSN 2214-7985 作者: constitutional 時間: 2025-3-29 11:07 作者: Lament 時間: 2025-3-29 14:35
Carbon and Nitrogen Abundances in Giant Stars of the Metal Poor Globular Cluster M92 — A Preliminary masses and ages, even for a fixed initial metal-abundance. Moreover, comparison of a given star with theoretical models may be rendered somewhat uncertain by errors in parrallax or other criteria of absolute magnitude.作者: BACLE 時間: 2025-3-29 17:18
CNO Isotope Abundances in Interstellar Cloudsough to ensure that the line suffers no serious optical depth effects. This requirement often makes the line of the less abundant species impossible to detect. Hence many experiments yield double isotope abundance ratios by comparing the line strengths if two molecules having isotope substitutions o作者: AWRY 時間: 2025-3-29 19:57 作者: CHECK 時間: 2025-3-30 02:19 作者: ADJ 時間: 2025-3-30 05:12 作者: 抵制 時間: 2025-3-30 09:59
Carbon and Nitrogen Abundances in Giant Stars of the Metal Poor Globular Cluster M92 — A Preliminaryassociates and students. In summarizing these results, Dearborn, Eggleton, and Schramm (1976) concluded that in the atmospheres of pre-He-core flash red giants there is evidence for substantial depletion of C. and enhancement of C. presumably as a result of deep mixing of envelope material into laye作者: Maximize 時間: 2025-3-30 13:17
CNO Isotopes and Red Giants stage, molecular lines are observed from which CNO isotope ratios and abundances can be determined. It is also during this stage that a surface convection zone penetrates into the interior mixing out material which was processed via the CNO tricycle (Iben 1964, 1966). Comparison of observed isotope作者: CAMEO 時間: 2025-3-30 19:30
Abundance of Carbon in NGC 7027 in grains and the amount in a gaseous form. Here we present the most relevant results and discuss some implications on the late stages of the stellar evolution and the chemical evolution of the Galaxy.作者: Defense 時間: 2025-3-30 22:43 作者: 移動 時間: 2025-3-31 04:05
The CNO Composition in Novae Envelopeonuclear runaway and ejection of a sizeable fraction of the envelope. Recently extensive numerical calculations of this model were carried out by Starrfield, Sparks and Truran (1974) (SST). In these calculations the assumed initial model is a degenerate carbon core of 1M☉. with an envelope of (1.25 作者: MOTIF 時間: 2025-3-31 07:05 作者: cutlery 時間: 2025-3-31 09:32
17O and 18O Abundances in Interstellar CloudsO is so widespread in our Galaxy, its isotopic substitutions are of particular importance. We concentrate here on the two isotopic molecules .C.O and .C.O. They give only faint J = 1 - 0 lines, at 112.36 GHz and 109.78 GHz respectively, but these lines are unsaturated even in Sgr B2 (as can be check
