Constellation.
the shape of the stars the shape of the stars
snowflakes are shaped like stars
One dozen equals 12 (items). 6 is one half (1/2) of a dozen. So 6 stars would be one-half dozen if you need how many dozens.
length times(x) width * * * * * Very few 2-dimensional figures are measured by length and width - rectangles (and stretching the terminology) triangles and parallelograms. Certainly not circles, stars, irregular polygons, other irregular shapes.
There are parallel lines, rectangles and arrays of stars 5 by 6 and 4 by 5.
The same stellar materials and dust any other galaxy is made of - it just hasn't taken on a coherent shape - yet, or possibly it had a collision encounter with another galaxy, leaving it "irregular" - either is possible.
An irregular galaxy is a galaxy that doesn't have a specific shape like a pinwheel or an elliptical galaxy.
Elliptical I think
You can also distinguish them by the types of stars - older stars versus younger stars, and stars of different "metallicity".
An irregular luminous band of stars is called a galaxyof stars.
Open cluster
Asterism. A group of stars that forms a certain shape - from our point of view.
a star shape is a 10 sided shape with 5 or 10 corners. You might also be thinking of a "constellation", or group of stars said to look like something.
Constellations are a group of stars that make an imaginary shape in the night sky.
The same age as stars in other galaxies.
It is a good example of a constellation - a group of stars forming a recogniseable shape when viewed from Earth.
I think it is called a constellation if they make a specific shape, but if not i don't know sorry.