What is the age of stars in the irregular galaxy?

Answer 1

Sizes vary, of course. A typical size is a few hundred billion (10^11) stars; some of the larger ones can have more than 10^12 stars.

Our galaxy is a barred spiral galaxy and it has somewhere between 200 and 400 billion stars. Andromeda is an even bigger spiral galaxy.

I could not say how many stars the smallest spiral galaxy would have, or how many the largest. There are cases where two spiral galaxies are colliding.

Answer 2

There is a huge range of ages. Some are billions of years old, others are just a few million years old, or even less.

A better question would be to ask how old the galaxy itself is.

Answer 3

Doing research some time I came to the conclusion that Irregular galaxies house Population I stars although an irregular galaxy can be formed after a collision with another galaxy, so it all depends on the situation.

Correct me if I am wrong.

Answer 4

Ages of stars in any galaxy are a function of the star's place on the Russel-hertzsprung diagram and whether the stars are located closer or farther away from the galactic center. Some galaxies are so far away that the light from them takes 1000 to 1000,000's of years to reach our telescopes so at best those galaxies that formed on the edge of the explosion of the Big Bang are probably older than stars in galaxies which formed farther from the edge.

In side a galaxy, those near the center are older than those farther from the center. But, you can have a stray star away from the center perhaps being older than those located near the center of the galaxy. At best you can put an upper and lower limit on probably ages in stars in younger or older galaxies and probably have to use ball park guesses good enough for government work.

Ages from around a million years to the those suggested by the HR diagram depending on the mass of the star.

Answer 5

As the moment of birth of a star is still an ill-defined stage we have as many 1,000 star that are at what we term the 0th age.

Answer 6

billions years old.

Answer 7

elliptical galaxy age of stars