The System of the Stars |
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Page xiv
... Dark Lanes - The Great Cluster in Hercules -- Nebular Affinities of Clusters . 234 CHAPTER XVII . L THE FORMS OF NEBULE . Fantastic Variety - Nebular Classification - Nebulous Stars - Planetary Nebula - The Owl Nebula - Helical Forms ...
... Dark Lanes - The Great Cluster in Hercules -- Nebular Affinities of Clusters . 234 CHAPTER XVII . L THE FORMS OF NEBULE . Fantastic Variety - Nebular Classification - Nebulous Stars - Planetary Nebula - The Owl Nebula - Helical Forms ...
Page xvii
... DARK LINES OF CALCIUM ( Pickering ) . • · 59 7. STELLAR SPECTRA OF THE FOURTH CLASS : 1 , 152 SCHJELLERUP ; 2 , 19 PISCIUM ( Dunér ) . 62 8. SPECTRA OF GASEOUS STARS COMPARED WITH THE FOURTH TYPE SPECTRUM OF 152 SCHJELLERUP ( Vogel ) ...
... DARK LINES OF CALCIUM ( Pickering ) . • · 59 7. STELLAR SPECTRA OF THE FOURTH CLASS : 1 , 152 SCHJELLERUP ; 2 , 19 PISCIUM ( Dunér ) . 62 8. SPECTRA OF GASEOUS STARS COMPARED WITH THE FOURTH TYPE SPECTRUM OF 152 SCHJELLERUP ( Vogel ) ...
Page 8
... Darkness would be abolished through the shining of invisible stars . It follows that the observed order of the stellar world has assignable limits - that the star - depths , however profound , are not absolutely unfathomable . The task ...
... Darkness would be abolished through the shining of invisible stars . It follows that the observed order of the stellar world has assignable limits - that the star - depths , however profound , are not absolutely unfathomable . The task ...
Page 17
... dark , the principle remains the same . They are bright when the ignited vapour originating them is the chief source of illumination ; dark , when a stronger light coming from behind is absorbed by its interposition . Their appearance ...
... dark , the principle remains the same . They are bright when the ignited vapour originating them is the chief source of illumination ; dark , when a stronger light coming from behind is absorbed by its interposition . Their appearance ...
Page 18
... dark gaps or lines significant of the ' type ' of the star . But prismatic analysis is not merely communicative as to the physical and chemical nature of the stars . It can tell something of their movements as well . And , what is ...
... dark gaps or lines significant of the ' type ' of the star . But prismatic analysis is not merely communicative as to the physical and chemical nature of the stars . It can tell something of their movements as well . And , what is ...
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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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