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Author : 黃昱瑾
Publisher :
ISBN 13 :
Total Pages : 78 pages
Book Rating : 4.:/5 (313 download)
Download or read book Millimeter Spectroscopic Survey of Young Planetary Nebula NGC 7027 written by 黃昱瑾 and published by . This book was released on 2007 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Paula M. Moraga Baez
Publisher :
ISBN 13 :
Total Pages : 37 pages
Book Rating : 4.:/5 (129 download)
Download or read book Investigating Expansion and Extinction in the Planetary Nebula NGC 7027 with HST written by Paula M. Moraga Baez and published by . This book was released on 2021 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Planetary nebulae are a late stage of the evolution of intermediate-mass (~1-8 solar mass) stars. A planetary nebula is formed after an asymptotic giant branch star's ejected mass becomes ionized by the stellar core, which is on its way to becoming a white dwarf. The shaping of planetary nebulae is slowly unveiled through studies of young and evolving nebulae such as NGC 7027. I have conducted an extensive analysis of the first-ever suite of contemporaneous panchromatic Hubble Space Telescope Wide Field Camera 3 (HST/WFC3) images of NGC 7027, extending from near-UV to near-IR. Extinction correction is performed successfully on several HST/WFC3 images, facilitating analysis of the spatial distribution of H recombination and forbidden emission lines within the nebula. The resulting extinction-corrected line ratio images and line ratio diagnostic, as well as an analysis of forbidden emission lines, are used are used to distinguish between photoionization and shock-ionized regions and to place constraints on the gas densities in the shocked regions. This analysis revealed regions dominated by shocks in the NW and SE lobes of NGC 7027. All of these results provide insight on the strength of NGC 7027's outflows, confirming previous assertions that NGC 7027 is among the youngest and most rapidly evolving PNe."--Abstract.
Author : Joseph S. Miller
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (97 download)
Download or read book The Recombination Spectrum of the Planetary Nebula NGC 7027 written by Joseph S. Miller and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 370 pages
Book Rating : 4.3/5 (91 download)
Download or read book NASA Reference Publication written by and published by . This book was released on 1987 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Y. Terzian
Publisher : Springer Science & Business Media
ISBN 13 : 9789027708731
Total Pages : 412 pages
Book Rating : 4.7/5 (87 download)
Download or read book Planetary Nebulae written by Y. Terzian and published by Springer Science & Business Media. This book was released on 1978-03-31 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of IAU Symposium No. 76 held at Cornell University, Ithaca NY, USA, 6-10 June 1977
Author : Prof. Dr. Roland Wielen
Publisher : Springer Science & Business Media
ISBN 13 : 366212355X
Total Pages : 1122 pages
Book Rating : 4.6/5 (621 download)
Download or read book Literature 1986, Part 1 written by Prof. Dr. Roland Wielen and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 1122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kenneth Churchill Leonard
Publisher :
ISBN 13 :
Total Pages : 92 pages
Book Rating : 4.3/5 ( download)
Download or read book A Spectroscopic Determination of Some Chemical Abundances in the Planetary Nebula NGC 7009 written by Kenneth Churchill Leonard and published by . This book was released on 1961 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 518 pages
Book Rating : 4.3/5 (91 download)
Download or read book Baltic Astronomy written by and published by . This book was released on 2007 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : G.A. Gurzadyan
Publisher : Springer Science & Business Media
ISBN 13 : 940103060X
Total Pages : 331 pages
Book Rating : 4.4/5 (1 download)
Download or read book Planetary Nebulae written by G.A. Gurzadyan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: The publication in English of this monograph seems to me to indicate the ever increasing interest of astrophysicists in the physical and dynamical problems of planetary nebulae-one of the most interesting and fruitful branches of theoretical astrophysics. Their interest in part arises from the fact that the methods of identify ing the physical processes occurring in planetary nebulae, as well as the many theo retical results, are now acquiring a degree of uni versality as their sphere of application increases. Finally, the special cosmic significance of planetary nebulae is becoming apparent. The English edition of Planetary Nebulae differs considerably from the Russian version published in 1962, primarily because of the new results included in it, but also because of numerous editorial revisions. The problems of magnetic fields and hydrodynamics in planetary nebulae are beginning to occupy an important place in the study of the dynamics of these objects. Recent studies by D. H. Menzel confirm the idea advanced in the present mono graph as to the existence of magnetic fields in planetary nebulae. New light is being cast on the dynamics of planetary nebulae by the hydrodynamic investigations of F. D. Kahn, W. G. Mathews and others. Unfortunately I was not able to include these and other interesting results in the present edition.
Author : Daniel Y. Gezari
Publisher :
ISBN 13 :
Total Pages : 580 pages
Book Rating : 4.3/5 (91 download)
Download or read book Catalog of Infrared Observations written by Daniel Y. Gezari and published by . This book was released on 1984 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Daniel Y. Gezari
Publisher :
ISBN 13 :
Total Pages : 358 pages
Book Rating : 4.F/5 ( download)
Download or read book Catalog of Infrared Observations: Appendixes written by Daniel Y. Gezari and published by . This book was released on 1987 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 758 pages
Book Rating : 4.3/5 (91 download)
Download or read book The Strasbourg-ESO Catalogue of Galactic Planetary Nebulae written by and published by . This book was released on 1992 with total page 758 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D.E. Osterbrock
Publisher : Springer Science & Business Media
ISBN 13 : 9401034737
Total Pages : 473 pages
Book Rating : 4.4/5 (1 download)
Download or read book Planetary Nebulae written by D.E. Osterbrock and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: This written account of the Symposium on Planetary Nebulae was prepared from manuscripts submitted by the participants. Nearly every paper that was presented at the meeting is reproduced here, in either complete or abbreviated form. The dis cussions have been somewhat shortened and rearranged, but we have tried to preserve the essential points and the general tenor of the exchanges. Participants who spoke in the discussion were asked immediately for written remarks, which were then edited, reproduced, and circulated at the meeting by the highly effective local Secretariat organized by Dr Perek. In addition, notes of the discussion taken by Mrs Edith F. Swan and by the undersigned were used. We wish to thank all the authors for their unusually good cooperation. We are especially grateful to Dr Minkowski, who kindly provided many excellent repro ductions of Mount Wilson and Palomar photographs, mostly taken by himself, of various planetary nebulae. We are particularly indebted to Mrs Swan, who attended the Symposium, made notes on the papers and discussions as they occurred, and did much of the checking and editing of the manuscripts. In addition, we are very grateful to Mrs Evelyn Seaver, who also did much of the checking, editing, and retyping of manuscripts, and to Dr B.L. Webster, Miss Rebecca Todd, Mr Joseph Tapscott, and Mr Dennis Schatz, who provided excellent assistance in the preparation of this volume.
Author :
Publisher :
ISBN 13 :
Total Pages : 1070 pages
Book Rating : 4.F/5 ( download)
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1993 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : International Astronomical Union. Symposium
Publisher : Cambridge University Press
ISBN 13 : 9780521889827
Total Pages : 536 pages
Book Rating : 4.8/5 (898 download)
Download or read book Organic Matter in Space (IAU S251) written by International Astronomical Union. Symposium and published by Cambridge University Press. This book was released on 2008 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our knowledge of the origin, evolution, nature, and distribution of organic matter in space has undergone a revolution in recent years. Insights into various aspects of this material can be found using a variety of different technical approaches. These range from telescopic measurements by observational astronomers over a wide range of wavelengths, to laboratory experiments and simulations by chemists, physicists, and spectroscopists, and analyses of actual extraterrestrial materials. IAU Symposium 251 brought together expertise of scientists from different disciplines, including observational astronomers, laboratory spectroscopists, and solar system scientists, to provide a synthesis of our current understanding of these organics and to identify areas in which additional work and new ideas are required to further our understanding.
Author : Steven J. Hynes
Publisher : Richmond, Va. : Willmann-Bell
ISBN 13 :
Total Pages : 280 pages
Book Rating : 4.3/5 (91 download)
Download or read book Planetary Nebulae written by Steven J. Hynes and published by Richmond, Va. : Willmann-Bell. This book was released on 1991 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 916 pages
Book Rating : 4.3/5 (91 download)
Download or read book Physics Briefs written by and published by . This book was released on 1994 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt:
