There are two types of star clusters. Globular clusters are tight groups of hundreds of thousands of very old stars which are gravitationally bound, while open clusters, are more loosely clustered, generally containing less than a few hundred stars, and are usually very young.
It can be called a star cluster, an open cluster or an asterism.
open cluster
globular cluster
A group of stars that are closer together than the surrounding stars is called a star cluster. Star clusters can be divided into two main types: open clusters and globular clusters, with open clusters being more loosely bound than globular clusters.
The type of star cluster where stars are most densely packed in a somewhat spherical pattern is called a globular cluster. These clusters contain thousands to millions of stars tightly bound by gravity, often resulting in a dense core. Globular clusters are typically older and found in the halos of galaxies, contrasting with open clusters, which are less dense and more loosely organized.
Constellation or "asterism". The difference is that "constellations" are officially recognized by the International Astronomical Union, while an "asterism" is any other pattern or grouping of stars.
It can be called a star cluster, an open cluster or an asterism.
open cluster
open cluster
open cluster
A star cluster is a cluster of stars, so clearly a star cluster must be larger.
Some of the brightest stars in the open cluster are found in the "Plough" or the "Ursa Major" just like the Epilson Ursai Majoris.
globular cluster
globular cluster
A misty group of stars is referred to as a star cluster. Star clusters are groups of stars that are gravitationally bound together and can be classified as either open clusters (loose grouping of stars) or globular clusters (more densely packed grouping of stars).
In a newly formed star cluster, low-mass stars like red dwarfs are the most common. These stars are more abundant than more massive stars like giants or supergiants. The cluster will typically have a range of stellar masses, but low-mass stars dominate in numbers.
A group of stars that are closer together than the surrounding stars is called a star cluster. Star clusters can be divided into two main types: open clusters and globular clusters, with open clusters being more loosely bound than globular clusters.