Astronauts have found a star in our galaxy (the Milky Way) with a chemical composition not matching any nearby star. This chemical symphony has been witnessed in a small amount of stars in small galaxies revolving around the Milky Way. This recommends that the star was fraction of a dwarf galaxy that combined into the Milky Way.
In the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) research info, scientists observed the star J1124+4535 for its strange chemical symphony. Initial studies displayed that J1124+4535, situated in the Big Dipper (Ursa Major) constellation, had low amount of specific components, such as magnesium.
Subsequent studies on the Subaru Telescope with the High Dispersion Spectrograph verified the low amounts of magnesium but discovered moderately high amounts of Europium. This is the first time a component ratio such as this has been seen in the Milky Way in a star. Stars are created from interstellar gas’ clouds. The component ratios of the initial cloud pass on a visible chemical signature on stars created in that cloud.
On a related note, Astronomy & Astrophysics earlier posted the work of scientists from the University of Vienna, who have discovered a stellar stream, a river of stars in astronomical parlance, surrounding a huge part of the southern sky. The stream is comparatively close by and has almost 4000 stars that have been shifting together since they formed in space, almost 1 Billion Years back. Owing to its proximity to our plant, this stream is an ideal workbench on which to calculate the gravitational field of our own galaxy, experiment on the disturbance of clusters, and learn about populations of coeval extrasolar planet with forthcoming planet-finding voyages. For their study, the authors employed info data from the satellite named ESA Gaia. The Milky Way Galaxy is home to star bunches of different ages and sizes.