We have detected several candidates for Cepheid variables in eclipsing binary systems in the Large Magellanic Cloud 10 (LMC). Using high-resolution spectra, we confirmed the discovery of a classical ...

The new results, from a team led by Grzegorz Pietrzyński (Universidad de Concepción, Chile, Obserwatorium Astronomiczne Uniwersytetu Warszawskiego, Poland), appear in the Nov. 25, 2010 edition of the ...

Italian astronomers have reported the discovery of a new lithium-rich galactic Cepheid star, identified by high-resolution spectroscopic observations. The newfound object, designated V363 Cas, is the ...

The Andromeda Galaxy (M31) lies nearly 3 million light-years from Earth, while the Virgo cluster of galaxies extends 50 million light-years into the “local” universe. Have you ever wondered how ...

Cepheid variables are pulsating supergiant stars whose regular brightness variations are tightly correlated with their intrinsic luminosities. This period–luminosity relation, often termed the Leavitt ...

How did a Cepheid variable star help Edwin Hubble prove the Andromeda Nebula was a galaxy? Roger Brady San Quentin, California Cepheids are rare variable stars with periods ranging from about 1 to 120 ...

Today's ESA/Hubble Picture of the Week features a galaxy that Hubble has captured multiple times over more than 20 years. The galaxy is called NGC 3370, and it is a spiral galaxy located nearly 90 ...

Cepheid variables are some of the most well-known variable stars in the sky, responsible for helping astronomers accurately measure cosmic distances and famously clueing Edwin Hubble in to the fact ...

The annual Perseids meteor shower is building to its peak in the middle of the night of the 12th to 13th, but has to battle against bright moonlight this year so that we notice only its brightest ...

On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star ...