Author: Pieter Theodorus Oosterhoff
Publisher:
ISBN:
Category : Stars
Languages : en
Pages : 472

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Author:
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 492

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Book Description

Author: Charles Edward Saint John
Publisher:
ISBN:
Category :
Languages : en
Pages : 478

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Book Description

Author: Jerzy Neyman
Publisher: Univ of California Press
ISBN: 0520350693
Category : Science
Languages : en
Pages : 264

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Author: A.B. Underhill
Publisher: Springer Science & Business Media
ISBN: 9401035563
Category : Science
Languages : en
Pages : 295

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Book Description
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: Herbert Alonzo Howe
Publisher:
ISBN:
Category : Astronomy
Languages : en
Pages : 352

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Author: Chūshirō Hayashi
Publisher:
ISBN:
Category : HR diagrams
Languages : en
Pages : 56

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Book Description
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: Sarah Frances Whiting
Publisher:
ISBN:
Category : Astronomy
Languages : en
Pages : 356

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Book Description

Author: Rony De Laet
Publisher: Springer Science & Business Media
ISBN: 1461405955
Category : Science
Languages : en
Pages : 295

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Book Description
The Casual Sky Observer's Pocket Guide offers an observing program for occasional amateur observers looking for some quick, fun astronomy adventures under the stars. In the real world, where time for observing is limited, the weather is seldom perfect, and expensive equipment is not an option, amateur astronomy may not be seen as a worthwhile activity. However, portable and quick-to-set-up instruments are available. A pair of binoculars or a small telescope fills the bill. And the way to make the most of these instruments is described in the Casual Sky Observer's Pocket Guide. Not only does the book feature the best and brightest showpieces of the heavens; it also provides a great deal of physical and environmental data as well as lots of fascinating information and beautiful illustrations that provide a unique perspective on the many treasures within and beyond our home galaxy, the Milky Way--stars, star clusters, other galaxies, and nebulae, all within reach of binoculars or a small telescope.

Author: Frank K. Edmonson
Publisher: Springer Science & Business Media
ISBN: 3642459323
Category : Science
Languages : en
Pages : 573

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Book Description