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Quotes from Periods of 25 Variable Stars in the Small Magellanic Cloud — Henrietta Swan Leavitt

1868–1921 United States

← All quotes by Henrietta Swan Leavitt

4 quotes

It is to be hoped, also, that the parallaxes of some variables of this type may be measured.

Periods of 25 Variable Stars in the Small Magellanic Cloud (1912)

It is hoped that systematic study of the light changes of all the variables, nearly two thousand in number, in the two Magellanic Clouds may soon be undertaken at this Observatory.

Periods of 25 Variable Stars in the Small Magellanic Cloud (1912)

Since the [Cepheid] variables are probably at nearly the same distance from the Earth, their periods are apparently associated with their actual emission of light, as determined by their mass, density, and surface brightness.

Periods of 25 Variable Stars in the Small Magellanic Cloud (1912)

A straight line can readily be drawn among each of the two series of points corresponding to the maxima and minima, thus showing that there is a simple relation between the brightness of the variables and their periods.

Periods of 25 Variable Stars in the Small Magellanic Cloud (1912)

Attribution

Quotes and notes from Wikiquote: Henrietta Swan Leavitt (page history), available under CC BY-SA 4.0.