Mi lista de blogs

sábado, 25 de marzo de 2017

NASA : Hubble Homes In on a Hypergiant's Home .- Telescopio Espacial Hubble, descubre una hipergigante estrella llamada : Westerlund 1...............

https://www.nasa.gov/image-feature/goddard/2017/hubble-hones-in-on-a-hypergiants-home

     
cluster of stars in the void
This beautiful Hubble image reveals a young super star cluster known as Westerlund 1, only 15,000 light-years away in our Milky Way neighborhood, yet home to one of the largest stars ever discovered.

Stars are classified according to their spectral type, surface temperature, and luminosity. While studying and classifying the cluster’s constituent stars, astronomers discovered that Westerlund 1 is home to an enormous star.  Originally named Westerlund 1-26, this monster star is a red supergiant (although sometimes classified as a hypergiant) with a radius over 1,500 times that of our sun. If Westerlund 1-26 were placed where our sun is in our solar system, it would extend out beyond the orbit of Jupiter.

Most of Westerlund 1’s stars are thought to have formed in the same burst of activity, meaning that they have similar ages and compositions. The cluster is relatively young in astronomical terms —at around three million years old it is a baby compared to our own sun, which is some 4.6 billion years old.


Image credit: ESA/Hubble & NASA
Text credit: European Space Agency

Last Updated: March 13, 2017
Editor: Karl Hille
NASA
Guillermo Gonzalo Sánchez Achutegui
ayabaca@gmail.com
ayabaca@hotmail.com
ayabaca@yahoo.com
Inscríbete en el Foro del blog y participa : A Vuelo De Un Quinde - El Foro!

No hay comentarios: