Variable-stars Sentence Examples

The absence of colour changes in variable stars or in the appearance of new stars is further evidence of the same fact.

Stars whose brightness fluctuates are called variable stars.

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.

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.

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.

These systems appear as a connecting link between short-period variable stars on the one hand and telescopic double stars on the other.

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.

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.