File:The Astrophysical journal (1895) (14779047331).jpg

Identifier: astrophysicaljou25ameruoft (find matches)
Title: The Astrophysical journal
Year: 1895 (1890s)
Authors: American Astronomical Society University of Chicago
Subjects: Astrophysics Spectrum analysis
Publisher: (Chicago) Published by the University of Chicago Press for the American Astronomical Society
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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not be explained with our present ideas of thegeneral make-up of the heavens. The conditions exemplified herealso exist in the region of the dark holes and lanes near 6 and pOphiuchi, but they perhaps do not so clearly show the presence of agroundwork other than that due to stars, as the present case does,although the phenomena there are more remarkable, or rather theyare more spectacular. Among the most surprising things in connection with these nebula-filled holes are the vacant lanes that so frequently run from them forgreat distances. These lanes undoubtedly have had something todo with the formation of the holes and with the nebulae in them.The idea of the dying-out of a nebula, previously mentioned as apossible explanation of the vacancy, is not strengthened by the pres-ence of the lanes, for we do not find in general any great streams ofnebulosity extending away from the nebulae. A possible exceptionis the case of the great curved stream of nebulosity which seems to PLATE XII N
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W Region of Vacancies in TAURUS6-inch Lens. 1907, January 9, i2h 27™ to 17b 55m G. M. T. Not enlarged. Scale: i°= 13 mm. A NEBULOUS GROUNDWORK IN TAURUS 223 emanate from the great nebula of Orion, and which stretches awayfor many degrees northward over a large part of the constellation.The position of the center of the large plate (Plate XI) is a=4hiim5, S=+27?9; that of the small plate (Plate XII) is a = 4hI5m; S=+27?6. The brightest portion of the large nebula is ata=4hI0m; 8=+27°55. As a ready means of identification, the following refer to the smallplate.> The two stars near the south edge are B.D. +22?6g6, 4T5, a=4hi7m38?6, 8=+22°28./3 + 22.699, 6-2» a = 4 l8 37-5, S=+22 39.3. The star at the southeast corner of the plate is B.D. +22?7i2, 7«?4, a = 4h26m5?3, S=+22°22.5. The two conspicuous stars near the right-hand edge are B.D. +27?633, 5»i, a = 3h57m43s7) 8=+270i3.,6; + 28.619, 5-4, a=3 58 3-9. 8=+28 36.8. The two close to the upper edge are: B.D. +32^805, 7?3, a=4h

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