Protostars with emission lines as well as absorption lines in their spectra and whose luminosity can change irregularly on time scales of a few days are called T Tauri stars.
Correct Answer:
Verified
Q9: The stellar remnant that will be left
Q10: A nebula that emits its own light
Q11: Our Sun is currently undergoing the triple-alpha
Q12: Stars between 0.4 and 4 solar masses
Q13: When stars enter their red-giant phase,their plot
Q15: Population I stars are members of a
Q16: Astronomers have to piece together the evolutionary
Q17: Since the Sun started its sustained thermonuclear
Q18: The one characteristic that determines a main-sequence
Q19: Stars join the main-sequence group when they
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents