NASA Technical Report
Author :
Publisher :
Page : 492 pages
File Size : 34,46 MB
Release : 1962
Category : Aerodynamics
ISBN :
Author :
Publisher :
Page : 492 pages
File Size : 34,46 MB
Release : 1962
Category : Aerodynamics
ISBN :
Author : Charles Edward Saint John
Publisher :
Page : 478 pages
File Size : 19,50 MB
Release : 1916
Category :
ISBN :
Author : University of Virginia
Publisher :
Page : 584 pages
File Size : 12,83 MB
Release : 1927
Category :
ISBN :
Author : A.B. Underhill
Publisher : Springer Science & Business Media
Page : 295 pages
File Size : 43,25 MB
Release : 2012-12-06
Category : Science
ISBN : 9401035563
At this time when astronomers are being surprised by the discovery of objects which emit a fabulously large amount of energy, that is the quasi-stellar radio sources and the quasi-stellar galaxies, and when by the means of space vehicles X rays, gamma rays and cosmic rays are being observed to come from the depths of interstellar space, one may ask why write a book about stars. Stars seem to be almost incidental when one looks at the universe in terms of exceedingly great energies. Nevertheless, stars exist. They are accessible to study and they have not yet revealed all their secrets. This is enough to arouse interest and to cause one to try to find answers to the questions which arise. The early type stars are particularly interesting because they are spendthrift stars pouring out their energy at a great rate. But their brilliance is also their undoing. They must evolve rather quickly, on an astrophysical scale. Thus by studying these stars we are studying a population in change. The implications from the local and from the cosmological viewpoint are important if one wishes to understand the details of stellar evolution and of galactic structure. Perhaps one of the simplest reasons for writing a book about the early type stars is to see if some of the conundrums pre sented by the spectra of these stars can be unravelled when all the available infor mation is brought together.
Author : Jerzy Neyman
Publisher : Univ of California Press
Page : 264 pages
File Size : 47,9 MB
Release : 2023-11-15
Category : Science
ISBN : 0520350693
Author :
Publisher :
Page : 1256 pages
File Size : 34,23 MB
Release : 1924
Category : Electrical engineering
ISBN :
Author : Herbert Alonzo Howe
Publisher :
Page : 352 pages
File Size : 10,36 MB
Release : 1896
Category : Astronomy
ISBN :
Author : Chūshirō Hayashi
Publisher :
Page : 56 pages
File Size : 19,3 MB
Release : 1962
Category : HR diagrams
ISBN :
Computations are made for the evolution of a population I star of 15.6 solar masses and an agezero composition of hydrogen concentration x = 0.90, helium concentration Y = 0.08, and the concentration of the remaining elements Z = 0.02, through four phases: (1) hydrogen exhaustion in the convective core, (2) gravitational contraction of the core, (3) helium burning, (4a) the onset of carbon burning, (4b) the onset of neon burning in the absence of a preceding carbon burning phase. This discussion builds upon the model treated by Sakashita, Ono, and Hayashi ... --p.i.
Author : Robert Burnham
Publisher : Courier Corporation
Page : 802 pages
File Size : 44,99 MB
Release : 2013-04-15
Category : Science
ISBN : 0486318036
Volume III of a comprehensive three-part guide to celestial objects outside our solar system concludes with listings from Pavo to Vulpecula. While there are many books on stars, there is only one Celestial Handbook. Now completely revised through 1977, this unique and necessary reference is available once again to guide amateur and advanced astronomers in their knowledge and enjoyment of the stars. After an extensive introduction in Volume I, which gives the beginner enough information to follow about 80 percent of the body of the material, the author gives comprehensive coverage to the thousands of celestial objects outside our solar system that are within the range of telescopes in the two- to twelve-inch range. The objects are grouped according to the constellations in which they appear. Each constellation is divided into four subject sections: list of double and multiple stars; list of variable stars; list of star clusters, nebulae and galaxies; and descriptive notes. For each object the author gives names, celestial coordinates, classification, and full physical description. These, together with a star atlas, will help you find and identify almost every object of interest. But the joy of the book is the descriptive notes that follow. They cover history, unusual movements or appearance, and currently accepted explanations of such visible phenomena as white dwarfs, novae and super novae, cepheids, mira-type variables, dark nebulae, gaseous nebulae, eclipsing binary stars, the large Magellanic cloud, the evolution of a star cluster, and hundreds of other topics, many of which are difficult to find in one place. Hundreds of charts and other visual aids are included to help in identification. Over 300 photographs capture the objects and are works of beauty that reflect the enthusiasm that star gazers have for their subject. Robert Burnham, Jr., who was on the staff of the Lowell Observatory, Flagstaff, Arizona, conceived the idea of The Celestial Handbook decades ago, when he began assembling a notebook of all the major facts published about each celestial object. In its former, privately printed edition, this handbook was acclaimed as one of the most helpful books for astronomers on any level.
Author : Sarah Frances Whiting
Publisher :
Page : 356 pages
File Size : 14,52 MB
Release : 1912
Category : Astronomy
ISBN :