Recent content by Barbequeman

a.) The scale length of the disk is the length over which the surface density of stars decreases by a factor of e. In this case, the surface density decreases by a factor of 10 over a distance of 9 kpc, so the scale length is 9 kpc. The surface density of stars at a radius of r from the center...

I calculated the following in the attached file, I hope I did it correctly...

For the first calculation of the velocity of the gas I use the first equation and this converted in meter would be look like this (first value as an example) v=299792458 m/s * (6.76813x10^-7-6.768x10^-7)/6.768x10^-7 =5836.03m/s or 0.0019c this was the velocity of the gas for the first spectral...

I tried a new attempt ... maybe there is something wrong, but I´m not sure.

I attached a Jpeg with my attempted solution but I´m not sure if I´m on the right way... I hope for a correction in my calculations

The next question would be how to resolve towards f, at what gas fraction f the cluster is disrupted The question in according to our Book is Now suppose that winds from young stars and supernovae explosions very rapidly (you can assume instantaneously) expel the gas from the system. At what...

I think I resolved it with the help of my friend from the university to crack the kinetic energy question which is the

I attached a file which shows my attempt to resolve this problem with the possible two pair interaction which gives us the kinetic energy of the cluster in an expanding system, at least I think so. But to be honest I´m more or less completely stuck with this question and I would be glad if...

Good morning I have a certain problem to find the answer to a problem with a question for my "homework" it contains the virial theorem for an unrotating and in the equilibrium state star cluster which is not contracting, instead it is expanding. therefore we need to calculate the kinetic energy...