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by 64015197
October 27th, 2021, 5:10 pm
Forum: 2022 Study Events
Topic: Astronomy C
Replies: 13
Views: 10655

Re: Astronomy C

Hi everyone, I am really struggling with calculating distances with variable stars and I haven't found any reliable resources on the web, would anyone please help me with the basics or recommend any resources? That would be great, I really feel confident about everything else (Stellar evolution, DSO ...
by 64015197
May 14th, 2021, 11:21 am
Forum: 2021 Question Marathons
Topic: Astronomy C
Replies: 88
Views: 26711

Re: Astronomy C

1) 1/.005 = 200 pc
2) v = Hd = 0.014 km/s 
3) The value is inaccurate because the galaxy and the star's motion are affected by peculiar motion. 
4) I got a really big number which probably is not right
by 64015197
January 7th, 2020, 9:35 am
Forum: 2020 Question Marathons
Topic: Astronomy C
Replies: 51
Views: 28722

Re: Astronomy C

The small angle formula is D= theta (angular diatance)/ 206265. you forgot to divide in the end right?

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