(E) Topic 14 Flashcards
Where are open clusters primarily found in our galaxy?
In the spiral arms
Give an example of an open cluster
Pleiades
Where are globular clusters found in our galaxy?
In the centre
How many extended astronomical objects did the Catalogue of Nebulae and star clusters contain?
103 (now 110)
Who published the Catalogue of Nebulae and star clusters, and when?
The French astronomer Charles Messier in 1781.
How many objects did the New General Catalogue (NGC) list?
over 8000
Who published the New General Catalogue (NGC), and when?
J.L.E Dreyer in 1888
Where do all stars originate from?
A gravitational collapse of cool, dense molecular clouds of gas and dust.
What happens after ‘A gravitational collapse of cool, dense molecular clouds of gas and dust’ ?
A protostar is formed, which will eventually become the cores of individual stars
