Publications of the Astronomical Society... Publications of the Astronomical Society of the Pacific Vol. 114, No. 794, April 2002 Red Giant Branch Stars: The Theoretical ... Red Giant Branch Stars: ...

Recently, however, astronomers have been keeping track of starspot activity on a red giant star called XX Trianguli, and the irregular behaviour of its starspots suggests its interior may have ...

T Corona Borealis is a dim star in a constellation, which is finally near exploding, making it the brightest it has ever been ...

Skip to content viewer section. ABSTRACT Keck Observatory LRIS‐B (Low Resolution Imaging Spectrometer) spectra are reported for six red giant stars in the Draco dwarf spheroidal galaxy and several ...

Artist’s impression of a cloud of smoke and dust being thrown out by a red giant star. Seen from the left the star remains bright but if viewed from the right it fades to invisibility.

It consists of a white dwarf star (a star that’s exhausted its fuel and is cooling down) and a red giant star (a star that's cooling and expanding as it ages, expelling material as it does.

At this stage, the star becomes a large red giant. Because a red giant is so large, its heat spreads out and the surface temperatures are predominantly cool, but its core remains red-hot.

A red giant star, Camelopardalis, emits a shell of gas as a layer of helium around its core begins to fuse. Such events help scientists calculate how fast the universe is expanding. Disclaimer ...