File:NGC 4565 - A beginner's star-book (1912) - Cu31924012302588 0030.jpg

Year: 1912 (1910s)
Authors: Murphy, Edgar Gardner, 1869-1913
Subjects: Astronomy
Publisher: New York, London, G.P. Putnam's Sons
View Book Page: Book Viewer

Text Appearing Before Image:
ts of such bodies are often different not only in size but in color. Alittle careful attention, however, will show us that color is a characteristic of all the stars,whether double or single. At a first view on a clear, moonless night, all may seem alike;but closer observation will show that while some are white, some also are yellow, othersare a deep orange, others red. Says Sir Norman Lockyer: The stars shine out with vari-ously colored Hghts. Thus we have scarlet stars, red stars, blue and green stars, and indeedstars so diversified in hue that observers attempt in vain to define them, so completelydo they shade into one another. Among large stars, Aldebaran, Antares, and Betelgeuzeare unmistakably tinged with red; Sirius, Vega, and Spica are of a bluish white; Arcturusand Capella show a yellow hue like that of our sun. * If we include those comprised within star clusters, and not classified individually, the total would be nearer4000. Additional variables are discovered each year.
Text Appearing After Image:
SPIRAL NEBULA IN COMA BERENICES, KNOWN AS H. V. 24 From a photograph taken at the Mt. Wilsoti Solar Observatory15 i6 H Beginners Star=BooF? In double and multiple stars, however, we meet with the most striking colors andcontrasts; Iota (0 in Cancer, and Gamma (;) in Andromeda, may be instanced. In Eta(?/) of Cassiopeia we find a large white star with a rich ruddy purple companion. Somestars occur of a red color, almost as deep as that of blood. What wondrous coloring mustbe met with in the planets lit up by these glorious suns, especially in those belonging to the compound systems, one sun setting, say, in clearest green, another rising in purpleor yellow or crimson; at times two suns at once mingling their variously colored beams!A remarkable group in the Southern Cross produced on Sir John Herschel the effect of asuperb piece of fancy jewelry. It is composed of over lOO stars, seven of which onlyexceed the tenth magnitude; among these, two are red, two green, three pale green, andone

Note About Images