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The Astrophysical Journal

The Astrophysical Journal PDF

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Size: 21.90 MB
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Category : Astronomy
Languages : un
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Book Description: "Letters to the Editor" issued as Part 2 and separately paged from v. 148, 1967.


The Astrophysical Journal

The Astrophysical Journal PDF

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Size: 36.22 MB
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Category : Astrophysics
Languages : un
Pages : 117
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The Astrophysical Journal

The Astrophysical Journal PDF

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Size: 36.34 MB
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Category : Astrophysics
Languages : en
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The Astrophysical Journal

The Astrophysical Journal PDF

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Category : Astrophysics
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The Astrophysical Journal 1899

The Astrophysical Journal  1899 PDF

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Author: American Astronomical Society
Publisher: Forgotten Books
ISBN: 9781330370919
Size: 54.32 MB
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Category : Science
Languages : un
Pages : 417
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Book Description: Excerpt from The Astrophysical Journal, 1899, Vol. 10 The Astrophysical Journal, 1899 was written by American Astronomical Society in 1899. This is a 417 page book, containing 116069 words and 36 pictures. Search Inside is enabled for this title. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


The Astrophysical Journal Vol 24

The Astrophysical Journal  Vol  24 PDF

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Author: George E. Hale
Publisher:
ISBN: 9781332558827
Size: 79.77 MB
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Category : Science
Languages : un
Pages : 408
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Book Description: Excerpt from The Astrophysical Journal, Vol. 24: An International Review of Spectroscopy and Astronomical Physics 1. It has often been suggested that the light-changes of those variable stars which are regularly periodic may be due to the existence of spots on their surfaces, which are hidden or brought into view as the star rotates about its axis. The same explanation has been given more plausibly for the variability shown by certain satellites and asteroids, for in this case the only rival hypothesis is that which ascribes the light-changes to the departure of the body from a spherical form. It may therefore be worth while to discuss some results of these hypotheses, and consider (1) what is the character of the light-curve produced by the rotation of an arbitrarily spotted body, and (2) how far it is possible to reason backward from such a light-curve to the spots which produce it. 2. The simplest case of a spotted body is a self-luminous sphere without absorbing atmosphere. In this case the apparent brightness of any part of the surface is independent of its inclination to the line of sight, so that a sphere of constant intrinsic brightness appears as a uniformly illuminated disk. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


The Astrophysical Journal Vol 42

The Astrophysical Journal  Vol  42 PDF

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Author: George E. Hale
Publisher: Forgotten Books
ISBN: 9780364075937
Size: 18.84 MB
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Category : Science
Languages : un
Pages : 516
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Book Description: Excerpt from The Astrophysical Journal, Vol. 42: An International Review of Spectroscopy and Astronomical Physics Knighthood of the Order of the Bath was conferred upon William Huggins for the great contributions which, with the collaboration of his gifted-wife, he had made to the new science of astro-physics. So it may be said that the wife became Lady Huggins in her own right. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


The Astrophysical Journal Vol 31

The Astrophysical Journal  Vol  31 PDF

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Author: George E. Hale
Publisher: Forgotten Books
ISBN: 9781334254031
Size: 34.64 MB
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Category : Science
Languages : un
Pages : 510
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Book Description: Excerpt from The Astrophysical Journal, Vol. 31: An International Review of Spectroscopy and Astronomical Physics; January June, 1910 Brooks-swift Of Comet 1884 I, of r)1 Cassiopeiae and 8 Lyme. In the paper on the new star in the Andromeda nebula (astronomische N achrichten, I 12, 390, I88 5) he mentions his first experiments on the use Of photography for observations of nebulae, a method he had previously employed for the solar eclipse in I882. The interesting photograph of a meteor accidentally crossing the field Of his re ector during an exposure on some other Object, and forming a trail like a comet, was made in his earliest photographic researches. His first success in comet photography came in the autumn of 1886, when he Obtained a photograph of Comet 1886 IX. After the Observa tions on the spectrum of U Orionis, he published his first account of his most interesting photographs of nebulae, to which were devoted many years of his assiduous work, and increased a great deal our knowledge of the constitution of the nebulae. The discovery of the small star in the Lyra nebula was considered somewhat doubtful at first by several observers, but was universally recognized as certain after having been thoroughly verified by others. His first photographs Showed the great advantage of the new method over visual Observa tions, and on his photographs of comparatively small size von Gothard obtained delicate details which were lacking on the best drawings made with large instruments, or appeared there only as Slight traces. Professor Vogel in Potsdam examined very closely some of von Gothard's photographs, and requested Mr.' S. Widt to make elaborate drawings Of five nebulae, believing that only well-made drawings are able to Show all the fine details Of the originals (astronomische N achrichten, 119, 337, He emphasizes the fact that small condensations Of the nebulous matter can always be easily distin guished from star-images by examining carefully the silver deposit on the plate. He could make very exact measures of well-marked details on the photographs. The excellence of von Gothard's photographs can also be seen on his photographs Of the small nebula near and of the small nebula, M 57, discovered by Barnard; in this case he succeeded in verifying the existence of these very faint Objects with his comparatively small instrument, though only the Lick telescopes seemed to be large enough to Show them visually (astronomische N achrichten, I 35, 11, I894; Astronomy and Astrophysics, I3, 190. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."