HP Tau G2 tagged posts

Hubble Views the Dawn of a Sun-like Star

Large image at upper right: Three bright stars with diffraction spikes shine near the center-right of the image, illuminating nearby clouds that glow in pale blue. The clouds darken at the edges of the image, and are dotted with smaller stars, some also with diffraction spikes. Small inset image in the lower-left corner: A colorful nebula or gas cloud. A white square outlines the area of the nebula that Hubble image captures.

Looking like a glittering cosmic geode, a trio of dazzling stars blaze from the hollowed-out cavity of a reflection nebula in this new image from NASA’s Hubble Space Telescope. The triple-star system is made up of the variable star HP Tau, HP Tau G2, and HP Tau G3. HP Tau is known as a T Tauri star, a type of young variable star that hasn’t begun nuclear fusion yet but is beginning to evolve into a hydrogen-fueled star similar to our Sun. T Tauri stars tend to be younger than 10 million years old ― in comparison, our Sun is around 4.6 billion years old ― and are often found still swaddled in the clouds of dust and gas from which they formed.

As with all variable stars, HP Tau’s brightness changes over time.

T Tauri stars are known to have both periodic and random fluctuation...

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