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Stars who are other stars than cannibalism?



  NASA Artist

Answer: Blue Stragglers

In 1953, the astronomer Allan Sandage measured the intensity of the stars in the spherical Messier 3-star cluster (if you are a fan of constellations, this In the northern constellation Canes Venatici, Sandage observed a rather strange occurrence right in our own heavenly backyard, the Milky Way: stars that seemed far far younger than their nearest celestial neighbors Their neighbors, who probably formed at the same time, appear so blue (an indicator of a higher temperature and a higher hydrogen content and thus a younger age)?

These stars retain their youthful appearance in the region Just like the vampires of the human legend: by siphoning the energy of their companions, the two most successful theories About how this happens is that the stars are connected as double stars and is slowly fed from the other, or that they are current or former double stars that just fit together or have already done so. However, it is obvious that there is a kind of transfer from a few stars to nearby stars. In dense regions of clusters, especially in the globular clusters, there are dozens of these blue stragglers who quietly pull the hydrogen out of their neighbors, prolonging their own life at the expense of the stars they feed on


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