The System of the Stars |
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Page 37
... him in the autumn of 1879. All the lenses included in it were made of quartz ; a metallic mirror , 1 Phil . Trans . vol . clxxi . p . 669 . eighteen inches in diameter collected the light afterwards sifted by SIRIAN AND SOLAR STARS 37.
... him in the autumn of 1879. All the lenses included in it were made of quartz ; a metallic mirror , 1 Phil . Trans . vol . clxxi . p . 669 . eighteen inches in diameter collected the light afterwards sifted by SIRIAN AND SOLAR STARS 37.
Page 77
... included in them give but slight signs of incandescence ; spectroscopically ( whatever they may be physically ) they are mere spheres of glimmering gas . Now planetary nebula ( so called by Sir William Herschel because they exhibit a ...
... included in them give but slight signs of incandescence ; spectroscopically ( whatever they may be physically ) they are mere spheres of glimmering gas . Now planetary nebula ( so called by Sir William Herschel because they exhibit a ...
Page 79
... included in the photograph are seen in the figure as two unbroken strips of light , crossed by the 3600 3700 3800 3900 4000 4100 4200 4300 4400 4500 3000 3100 3200 3300 3400 3500 3600 3700 3800 3900 11 FIG . 9. - Photographic Spectrum ...
... included in the photograph are seen in the figure as two unbroken strips of light , crossed by the 3600 3700 3800 3900 4000 4100 4200 4300 4400 4500 3000 3100 3200 3300 3400 3500 3600 3700 3800 3900 11 FIG . 9. - Photographic Spectrum ...
Page 81
... included no red rays , nor was it anywhere uniform , but seemed mottled throughout , whether by the effects of absorption or of irregular emission , it was impossible to decide.2 Recent observations leave the point still unsettled , the ...
... included no red rays , nor was it anywhere uniform , but seemed mottled throughout , whether by the effects of absorption or of irregular emission , it was impossible to decide.2 Recent observations leave the point still unsettled , the ...
Page 100
... included in the distinctive series thus created , so that many variables are still entitled in the ordinary way by Greek letters . The stellar apparition that ensued after ten years was , in some of its features , the most remarkable of ...
... included in the distinctive series thus created , so that many variables are still entitled in the ordinary way by Greek letters . The stellar apparition that ensued after ten years was , in some of its features , the most remarkable of ...
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Common terms and phrases
61 Cygni 70 Ophiuchi absorption Aldebaran Algol Andromeda Andromeda nebula appear Arcturus Argûs Astr astronomy atmospheric bands Betelgeux blue bodies bright lines brilliant Cassiopeia Catalogue centre century cluster colour comets condensation Cygni dark detected distance double stars effect extent faint galactic Harvard heavens heliometer hence Huggins hydrogen hydrogen lines Ibid interval less light Lockyer luminous lustre Lyræ magnitude star mass maximum measured ment miles Milky Mira Monthly Notices movements nearly nebula ninth magnitude objects observations Observatory Ophiuchus orbit Orion Orion nebula pair parallax peculiarities period Phil photographic photosphere planetary plates Pleiades present Professor proper motion rays red stars refractor remarkable remote satellite Schjellerup seems sidereal Sir John Herschel Sirian Sirius sixth magnitude small stars solar southern space spectra spectroscopic spectrum stellar Struve sun's telescope tion Trans variable stars velocity visible visual Vogel yellow
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