Herbig-Haro objects, bright, variable regions within nebulae, are now thought to be the result of:
A) the initial condensation of matter into a protostar, producing an infrared and visible glow.
B) intense jets of material ejected from a young star, hitting parts of the nebula.
C) brightening of the gas surrounding a massive star as the precursor to a supernova explosion.
D) the hot atmosphere of a star as it is ejected in the dying phases of the star's life.
Correct Answer:
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Q61: Those interior regions of a protostar that
Q62: T Tauri stars are at what stage
Q63: A T Tauri star is:
A)an intermediate mass
Q64: A Herbig-Haro object is:
A)the gas cloud produced
Q65: Herbig-Haro objects are:
A)dense dust clouds surrounding and
Q67: Typical jets of bipolar outflow last for:
A)10
Q68: What is a proplyd?
A)a protoplanetary disk around
Q69: The Hubble Space Telescope has photographed disks
Q70: A star-forming region is best viewed in
Q71: In the magnetic model for the bipolar
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