YMCA-1: a new remote star cluster of the Milky Way?

10. 10 2021

Stars

Open cluster NGC 1605 is actually two clusters with different age

The two clusters designated NGC 1605 a and b are in a process of merging. Their stars are 600 millions and 2 billions years old. New information comes from telescopes WISE and Gaia.

08. 09 2021

White dwarf

Ongoing thermonuclear fusion on the surface of white dwarfs slows their cooling and changes how we calculate their age

By comparing more than 700 white dwarfs in two different globular clusters, astronomers realized there is ongoing thermonuclear fusion on their surfaces. The unexpected process leads to slower cooling of these white dwarfs which in turn could mean, that we might be wrong about their ages. And the ages of globular clusters they are part of.

17. 08 2021

Supernovae

Some of the radionuclides in the Sun may come from supernovae in nearby star clusters

Multi-wavelength observations of star-forming region in Ophiuchius constellation bring clues to the history of our own solar system. Using data from several telescopes on the ground and in space, astronomers trace aluminum-16 radionuclides to nearby star cluster.

15. 06 2021

Star Clusters

A massive open cluster hiding in full sight