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Home Q & A Board Science-Related Homework Help Physics
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Tsync Tsync
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8 years ago
What kind of variable stars are pre-Main Sequence stars undergoing gravitational contraction and exhibiting erratic changes in their luminosities?
A) T Tauri
B) Herbig-Haro
C) RR Lyrae
D) R Coronae Borealis
E) Cepheid
Textbook 
Astronomy Today

Astronomy Today


Edition: 8th
Authors:
Read 277 times
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Minoring in physics
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RatatouilleRatatouille
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8 years ago
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Tsync Author
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#2
8 years ago
Exactly what I needed Smiling Face with Open Mouth
Minoring in physics
wrote...
#3
8 years ago
Cool Smiling Face with Open Mouth
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