Contrast the open vs. globular clusters in terms of age, color, galactic distribution, chemical composition, and populations
What will be an ideal response?
Open star clusters usually are younger, bluer, lie close to the galactic disk, are richer in metals, and belong to Population I. Older globular clusters are all over the halo, are dominated by evolved red giants, are much richer in numbers, and are classified in population II.
You might also like to view...
Forces that are equal in size and opposite in direction are known as
a. balanced forces b. net forces c. friction forces d. accelerated force
A hydrogen atom is excited to the n = 10 stated. It then decays to the n = 4 state by emitting a photon which is detected in a photographic plate. What is the frequency of the detected photon? The lowest level energy state of hydrogen is -13.6 eV
(h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J) A) 4.05 × 1014 Hz B) 1.73 × 1014 Hz C) 1.27 × 1014 Hz D) 0.865 × 1014 Hz E) 3.46 × 1014 Hz
What is an astronomical unit?
a) the length of time it takes Earth to revolve around the Sun b) the diameter of Earths orbit around the Sun c) the average distant from Earth to the Sun
Phobos and Deimos are probably captured comet nuclei
Indicate whether the statement is true or false