Moving Envelopes of Stars PDF Download

Author: V. V. Sobolev
Publisher:
ISBN: 9780674864634
Category :
Languages : en
Pages : 120

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Author: Viktor Viktorovič Sobolev
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Harm J. Habing
Publisher: Springer Science & Business Media
ISBN: 1475738765
Category : Science
Languages : en
Pages : 566

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The underlying astrophysical mechanisms of the objects known as asymptotic giant branch stars - the structures that occur during the dramatic period prior to a star's death - is the main theme of this text. Over the past three decades, asymptotic giant branch stars have become a topic of their own, and the contributions to this volume all focus on these entities themselves, rather than their connections to other fields of astronomy. Among the many topics covered are new methods of high- quality infrared observation and the more detailed and realistic simulations made possible by increasingly fast computers. This collection should be useful to graduate students who work in the field, teachers who want to address the subject in their courses, and to astronomers from various backgrounds who are interested in the astrophysics of AGB stars.

Author: Maureen Johnson
Publisher: Harper Collins
ISBN: 0061973807
Category : Young Adult Fiction
Languages : en
Pages : 212

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New York Times bestselling author Maureen Johnson’s funny, heartbreaking, and utterly romantic tale gets a great new cover! Ginny Blackstone never thought she’d spend her summer vacation backpacking across Europe. But that was before she received the first little blue envelope from Aunt Peg. This letter was different from Peg’s usual letters for two reasons: 1. Peg had been dead for three months. 2. The letter included $1000 cash for a passport and a plane ticket. Armed with instructions for how to retrieve twelve other letters Peg wrote—twelve letters that tell Ginny where she needs to go and what she needs to do when she gets there—Ginny quickly finds herself swept away in her first real adventure. Traveling from London to Edinburgh to Amsterdam and beyond, Ginny begins to uncover stories from her aunt’s past and discover who Peg really was. But the most surprising thing Ginny learns isn’t about Peg . . . it’s about herself. Everything about Ginny will change this summer, and it’s all because of the 13 little blue envelopes. Look for the sequel, The Last Little Blue Envelope!

Author: Viktor Viktorovich Sobolev
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 132

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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1296

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Author: Tomokazu Kogure
Publisher: Springer Science & Business Media
ISBN: 0387689958
Category : Science
Languages : en
Pages : 544

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Emission line stars are attractive to many people because of their spectacular phenomena and their amazing varieties and variability. This book offers general information on emission line stars, starting from a brief introduction to stellar astrophysics and then moving to a broad overview of emission line stars including early and late type stars as well as pre-main sequence stars.

Author: International Astronomical Union. Symposium
Publisher: Springer Science & Business Media
ISBN: 9789027722737
Category : Science
Languages : en
Pages : 568

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Proceedings of the 116th Symposium of the International Astronomical Union, held at Porto Heli, Greece, May 26-31, 1985

Author: A.H. Batten
Publisher: Springer Science & Business Media
ISBN: 9401026149
Category : Science
Languages : en
Pages : 304

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The proposal to organize a Symposium on circumstellar matter and extended atmo spheres in binary systems was first made by the Dominion Astrophysical Observatory to the Executive Committee of the International Astronomical Union in the summer of 1969. It received the support of the presidents of Commissions 29 (Stellar Spectra), 30 (Radial Velocities), 36 (Stellar Atmospheres), and 42 (Photometric Double Stars). Approval in principle was given by the Executive Committee almost immediately, and the Committee further suggested that the Symposium be officially designated the Struve Memorial Symposium. Final approval was given at the time of the 1970 General Assembly of the Union. when the dates of the Symposium were set for August or September, 1972. The Organizing Committee set up consisted of K. O. Wright (Chairman), A. H. Batten, K. -H. B6hm, A. A. Boyarchuk, G. Larsson-Leander, and M. Plavec. In addition, J. Sahade and F. B. Wood acted as advisory members. Local organization was entrusted to a committee consisting of A. H. Batten, E. K. Lee, and C. D. Scarfe. The final dates selected were September 6-12, 1972, and the Sym posium was held at the Island Hall Hotel, Parksville, B. C. , on Vancouver Island some 90 miles from Victoria. The Organizing Committee attempted to arrange a Symposium of the type in which no contributed papers would be presented and discussion would range as widely as possible over the field covered by the six invited review papers.

Author: Anthony F.J. Moffat
Publisher: Springer Science & Business Media
ISBN: 9401103151
Category : Science
Languages : en
Pages : 475

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This specialized workshop was conceived during the workshop on "Non isotropic and Variable Outflows from Stars", which was held at the Space Telescope Science Institute in October, 1991. At that meeting, the four of us collectively decided that the time was ripe for an even more focussed discussion of the basic issues in the area of hot-star wind instability and its observable manifestations. Not that the big problems have been solved! Rather, we are currently in a phase of rapid development, both with regard to the models and to the observations. The key issue at this new workshop would be to decide how the time-dependent structures observed in hot-star winds (e. g. , NACs, DACs, blobs, clumps, filaments, shells, puffs, jets, etc. ) relate to radiative and other instabilities. Further questions concern the role of turbulence and the nature of its driver, and the effect of stellar rotation, pulsation, and magnetic fields on time-dependent phenomena in hot-star winds. Of no less importance is the impact of stellar wind variability on the derivation of mass-loss rates, on stellar evolution, and on momentum/energy deposition in the interstellar medium. To attain our goal of maximum confrontation (in the positive sense!) we decided: (1) to limit the workshop to the observers and theoreticians most active in this field in the world; (2) to insist that virtually all participants present a talk, thereby avoiding the distraction of poster sessions; and (3) to allocate approximately half of the allotted time to discussion.