標(biāo)題: Titlebook: Double Stars; Wulff D. Heintz Book 1978 D. Reidel Publishing Company, Dordrecht, Holland 1978 Population.star.star formation.sun [打印本頁(yè)] 作者: 使入伍 時(shí)間: 2025-3-21 17:42
書目名稱Double Stars影響因子(影響力)
書目名稱Double Stars影響因子(影響力)學(xué)科排名
書目名稱Double Stars網(wǎng)絡(luò)公開度
書目名稱Double Stars網(wǎng)絡(luò)公開度學(xué)科排名
書目名稱Double Stars被引頻次
書目名稱Double Stars被引頻次學(xué)科排名
書目名稱Double Stars年度引用
書目名稱Double Stars年度引用學(xué)科排名
書目名稱Double Stars讀者反饋
書目名稱Double Stars讀者反饋學(xué)科排名
作者: 煩憂 時(shí)間: 2025-3-21 23:05
19th-Century Achievements,raced. Most visual binaries have not completed a revolution since discovery, and therefore, have not been reobserved in the same section of the orbit. To the present-day orbit investigator, 150 yr old measurements still have far more interest than a mere historical, and so the yellowed folio pages o作者: ELUC 時(shí)間: 2025-3-22 01:44
Three Quarters of This Century,blem, first extragalactic studies with the new Mt. Wilson telescope, the laws of stellar interiors, and the impact of relativity theory upon astronomy — these and other early highlights of 20th-century work are so much connected with the present, that the historical outline can be said here to merge作者: 從屬 時(shí)間: 2025-3-22 04:40 作者: Irksome 時(shí)間: 2025-3-22 09:42 作者: Common-Migraine 時(shí)間: 2025-3-22 13:09 作者: Common-Migraine 時(shí)間: 2025-3-22 20:40
Interferometric Observation, with the ‘maximum’ visibility of the fringes as given by a monochromatic point source, a double star does not differ if the line joining the stars is perpendicular to that joining the interferometer slits. Minimum visibility occurs when the separation . of the pair (in radians) and the component . 作者: colostrum 時(shí)間: 2025-3-23 00:10
Photographic Positions,rtzsprung (1921). Though the mean error of one measured image is of the order of 0"1 in each coordinate, one plate can accomodate many exposures obtainable in a short time, and an internal plate error of only 0"02 to 0"01 can be reached from 25 to 100 images. The actual errors are somewhat larger, o作者: Petechiae 時(shí)間: 2025-3-23 02:09
The Orbital Elements of a Visual Binary,as is obtained from the relative observations. In the two-body problem with the masses . and ., the radius vector r, and the constant of gravitation ., the relative motion is represented by the second-order differential equation .. Its six scalar constants of integration correspond to six elements w作者: Needlework 時(shí)間: 2025-3-23 08:24
Dtermination of Visual Binary Orbits,stem, yet in practice there is little resemblance between the methods. The motion of the earth is insignificant (or easily allowed for in the spectroscopic and photometric cases) which greatly simplifies the formalism. On the other hand, the measuring errors are much larger, compared with the quanti作者: anachronistic 時(shí)間: 2025-3-23 10:57 作者: 翻布尋找 時(shí)間: 2025-3-23 16:52
The Methods by Danjon and Rabe, Thus, . can in principle be determined from the shape of the curve θ(.) without using separations. Consider now two opposite points of the orbit. (. – . = 180°) Then . – . — 180° also holds, as the projection effects are the same, but .2 .1 does not equal 180° except if . 0, or if the two points ar作者: 承認(rèn) 時(shí)間: 2025-3-23 20:15
Correcting an Orbit,d, as it often happens. Differential corrections were not often applied in pre-computer times. Little attention was also given to the development and application of briefer methods of correction (in comparison to the extensive and often unsuccessful efforts to find the solution directly in one step)作者: 慟哭 時(shí)間: 2025-3-24 01:57 作者: 錯(cuò)事 時(shí)間: 2025-3-24 04:48
Understanding Social Dynamics in South Asiaraced. Most visual binaries have not completed a revolution since discovery, and therefore, have not been reobserved in the same section of the orbit. To the present-day orbit investigator, 150 yr old measurements still have far more interest than a mere historical, and so the yellowed folio pages o作者: 思想上升 時(shí)間: 2025-3-24 06:50 作者: 悠然 時(shí)間: 2025-3-24 11:06 作者: Eosinophils 時(shí)間: 2025-3-24 15:01
Vignettes of Chinese University EAP Learnersin polar coordinates: The position angle 0 is counted in degrees from North through East, South, West from 0° to 360°, and the separation (also called distance) . is given in arc sec (Figure 4). The conversion to rectangular coordinates . and .(in arc sec) as given by photographic measurements is: .作者: Asseverate 時(shí)間: 2025-3-24 22:53 作者: 集中營(yíng) 時(shí)間: 2025-3-25 02:53
https://doi.org/10.1007/978-981-13-0647-1 with the ‘maximum’ visibility of the fringes as given by a monochromatic point source, a double star does not differ if the line joining the stars is perpendicular to that joining the interferometer slits. Minimum visibility occurs when the separation . of the pair (in radians) and the component . 作者: epidermis 時(shí)間: 2025-3-25 07:00 作者: 發(fā)電機(jī) 時(shí)間: 2025-3-25 08:45 作者: Perceive 時(shí)間: 2025-3-25 12:16 作者: 滑動(dòng) 時(shí)間: 2025-3-25 17:33 作者: seruting 時(shí)間: 2025-3-25 23:26
R.B. Singh,Bathula Srinagesh,Subhash Anand Thus, . can in principle be determined from the shape of the curve θ(.) without using separations. Consider now two opposite points of the orbit. (. – . = 180°) Then . – . — 180° also holds, as the projection effects are the same, but .2 .1 does not equal 180° except if . 0, or if the two points ar作者: 樹木心 時(shí)間: 2025-3-26 03:23
Koichiro Kinugawa,Teruhiko Imamurad, as it often happens. Differential corrections were not often applied in pre-computer times. Little attention was also given to the development and application of briefer methods of correction (in comparison to the extensive and often unsuccessful efforts to find the solution directly in one step)作者: Panacea 時(shí)間: 2025-3-26 06:09 作者: 感激小女 時(shí)間: 2025-3-26 10:13 作者: recession 時(shí)間: 2025-3-26 15:19
Bhola Nath Ghosh,Samba Siva Rao PasupuletiThe current balance of known objects and of available orbital solutions is shown by the following numbers.作者: licence 時(shí)間: 2025-3-26 19:35
https://doi.org/10.1007/978-981-13-1628-9Next to the relative positions, for which a variety of measuring methods was on the agenda, the photometric data on double stars are another piece of data not easy to get. Let mA and mB be the apparent magnitudes of the components and mt the total (combined) magnitude of the pair. By definition, . . >0. The formula 作者: 鋸齒狀 時(shí)間: 2025-3-26 21:20 作者: 不知疲倦 時(shí)間: 2025-3-27 04:16 作者: 血友病 時(shí)間: 2025-3-27 07:48
Catalogues and Data References, (abbreviated IDS), by H. M. Jeffers, W. H. van den Bos, and F. M. Greeby, Publ. Lick Obs., Vol. 21, Pts. I and II. This index is a complete list of doubles catalogued to 1960 (thus including many optical doubles), without quoting individual observations. Pairs discovered later are recorded in a card file at the U.S. Navy Observatory.作者: GLIB 時(shí)間: 2025-3-27 12:12
Selective Discovery and Abundance of Binaries,The current balance of known objects and of available orbital solutions is shown by the following numbers.作者: acolyte 時(shí)間: 2025-3-27 15:46
Magnitudes of Double-Star Components,Next to the relative positions, for which a variety of measuring methods was on the agenda, the photometric data on double stars are another piece of data not easy to get. Let mA and mB be the apparent magnitudes of the components and mt the total (combined) magnitude of the pair. By definition, . . >0. The formula 作者: 財(cái)主 時(shí)間: 2025-3-27 21:36
Ephemeris Formulae,For any time ., the coordinates ., . or ., . are computed from the elements by means of the following formulae:.The process leads from the mean anomaly . via the auxiliary angle . (the eccentric anomaly) to the polar coordinates (. = true anomaly, . = radius vector) or to the normalized rectangular coordinates . in the true orbit (Figure 8).作者: 誘使 時(shí)間: 2025-3-28 00:35
https://doi.org/10.1007/978-94-009-9836-0Population; star; star formation; sun作者: MAL 時(shí)間: 2025-3-28 04:08
978-90-277-0886-1D. Reidel Publishing Company, Dordrecht, Holland 1978作者: bifurcate 時(shí)間: 2025-3-28 07:55
Micrometric Observation,nchanged, device — perhaps a unique case in physical science. The older history of micrometer types has been comprehensively described by Becker (1899), and the present section mentions only the two surviving types.作者: 神圣在玷污 時(shí)間: 2025-3-28 10:59 作者: 吸引人的花招 時(shí)間: 2025-3-28 17:50
Vignettes of Chinese University EAP Learnersnchanged, device — perhaps a unique case in physical science. The older history of micrometer types has been comprehensively described by Becker (1899), and the present section mentions only the two surviving types.作者: STENT 時(shí)間: 2025-3-28 18:53 作者: 疼死我了 時(shí)間: 2025-3-29 01:57 作者: HILAR 時(shí)間: 2025-3-29 03:18 作者: 環(huán)形 時(shí)間: 2025-3-29 09:43 作者: 發(fā)牢騷 時(shí)間: 2025-3-29 15:21 作者: 受傷 時(shí)間: 2025-3-29 18:05 作者: sorbitol 時(shí)間: 2025-3-29 23:00
NorHapiza Mohd Ariffin,Norfarizan Mohd Daud 3rd law (formula 1), although equally valid, cannot be applied until the orbit is known, and a determination of the unknown total mass is attempted. The semiaxis major, therefore, is an independent element and, moreover, from visual and all positional data known only in arc sec, not in linear measu作者: 肥料 時(shí)間: 2025-3-30 01:09
Koichiro Kinugawa,Teruhiko Imamuran) weakly determined. A few discordant observations may suffice to impair the representation over all the the rest of the orbit, or even cause the corrections to diverge. Such incidents are hard to foresee, and have to be remedied in the course of computation by revising the weights, or by limiting 作者: 蛛絲 時(shí)間: 2025-3-30 07:30
Book 1978influence between the components of a close binary pair develops. Transfer and exchange of mass and the presence of angular momentum in the orbit give rise to special tracks of evolution, not found for single stars, and to peculiar spectral groups. This is not a new story but it has a new ending: Th作者: 難聽的聲音 時(shí)間: 2025-3-30 10:25
as mutual influence between the components of a close binary pair develops. Transfer and exchange of mass and the presence of angular momentum in the orbit give rise to special tracks of evolution, not found for single stars, and to peculiar spectral groups. This is not a new story but it has a new ending: Th978-90-277-0886-1978-94-009-9836-0作者: 非實(shí)體 時(shí)間: 2025-3-30 12:42 作者: V切開 時(shí)間: 2025-3-30 20:20 作者: 衣服 時(shí)間: 2025-3-30 21:13
pace surrounding the sun shows beyond doubt. Numerous stellar features, and methods of their exploration, ensue specifically from the one but widespread property, the binary nature. Stellar masses are basic quantities for the theory of stellar structure and evolution, and they are ob- tained from bi作者: 深淵 時(shí)間: 2025-3-31 03:16 作者: justify 時(shí)間: 2025-3-31 06:58
Understanding Social Dynamics in South Asia — these and other early highlights of 20th-century work are so much connected with the present, that the historical outline can be said here to merge into the stream of current research. Similarly, many results on double stars will have to be reported in later sections, rather than in the present survey.作者: 啞巴 時(shí)間: 2025-3-31 09:46 作者: 幾何學(xué)家 時(shí)間: 2025-3-31 15:44
https://doi.org/10.1007/978-981-13-9109-5copic and photometric cases) which greatly simplifies the formalism. On the other hand, the measuring errors are much larger, compared with the quantities to be determined, in the binary-star case, so that an orbit needs to be based on a much larger number of observations.作者: 柏樹 時(shí)間: 2025-3-31 18:17 作者: GUILE 時(shí)間: 2025-4-1 00:08 作者: 驚奇 時(shí)間: 2025-4-1 02:56 作者: 演講 時(shí)間: 2025-4-1 09:16
Book 1978unding the sun shows beyond doubt. Numerous stellar features, and methods of their exploration, ensue specifically from the one but widespread property, the binary nature. Stellar masses are basic quantities for the theory of stellar structure and evolution, and they are ob- tained from binary-star 作者: 聲明 時(shí)間: 2025-4-1 13:17
When Double-Star Research Began, more neighboring stars easily separated by the naked eye. On the other hand, the well-known naked-eye pair Mizar and Alcor in the Big Dipper received separate names, probably because their difference of brightness did not make them appear as a ‘pair’ of stars.
