The conclusions arrived at by Dr. Frankland are that it is not solid particles which produce luminosity, but that the intensity of a flame depends on the radiation of dense but transparent ...

The brighter the star is overall, the longer the period of luminosity. Since the cepheids in the Magellanic Clouds were all about the same distance from Earth, Leavitt concluded that the period ...

It has been known about for several decades, but since it is so bright, astronomers assumed it must be a nearby star ... in a unit of time. The only known power source for such extreme luminosity ...

We determined the pulsation modes of the stars based on the pulsation constants. Moreover, the period–luminosity (P–L) relation of δ Scuti stars was investigated and discussed. Then, by using a ...

"Its luminosity and proximity ... from as far as 2 astronomical units (300 million km/186 million miles — i.e. twice the Earth–sun distance) from its star to as close as 0.75 AU (112 million ...