Variable-stars sentence example

variable-stars
  • The absence of colour changes in variable stars or in the appearance of new stars is further evidence of the same fact.
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  • Stars whose brightness fluctuates are called variable stars.
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  • In both cases the rise to a maximum is more rapid than the decline to a minimum, and in fact some of the minor peculiarities of the sunspot curve are closely imitated by the light-curves of variable stars.
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  • On the other hand, the variations in the light of the sun must be very small compared with the enormous fluctuations in the light of variable stars.
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  • Moreover, the solar period (II years) is far outside the limits of the periods of 1 Variable stars (except those sufficiently bright to have received special names) are denoted by the capital letters R to Z followed by the name of the constellation.
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  • These systems appear as a connecting link between short-period variable stars on the one hand and telescopic double stars on the other.
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  • The instrumental equipment of that observatory was somewhat antiquated, his largest telescope being a small refractor of 73 lines aperture, but he selected a line of work to suit the instruments at his disposal, observing nebulae and variable stars and keeping a watch on comets and new planets.
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  • The progress of this survey was marked by a number of important discoveries of " new " and variable stars and of spectroscopic binaries, mainly through the acumen of Mrs Williamina Paton Fleming of Harvard College in scrutinizing the negatives forming the data for the great catalogue.
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