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13 Cards in this Set

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  • Back
Mira
This is the prototype star in which other variable stars (red giants) that have an oscillation period of over 100 days. Just give the name.
This is the prototype star in which other variable stars (red giants) that have an oscillation period of over 100 days. Just give the name.
Cetus, 460
Mira, the prototype star, lies in the ______ constellation and has a distance of approximately _____ LY.
2.5, 5, 6
Mira variables typically hang out at about ____ magnitude in visual wavelength, but will typically vary from ___ to ___ magnitudes during their oscillations.
C
Mira variables are:
A) Above
B) Below
C) On
D) To the left of
the AGB.
2
Mira variables originated from stars that were massive enough to have undergone helium fusion, but had an approximate limit of ___ solar masses. Otherwise, they would have become
False (the change is caused by a shifting between visual and infrared outputs)
(True/False) Mira variables will vary vastly in magnitude, the main cause being that their luminosity is rapidly changing during their oscillations.
True
(True/False) Mira is a binary star system, consisting of the red giant Mira A and Mira B, a spectral type K variable with an acretion disk captured directly from the Mira system.
supernova variable
Mira was the first type of variable star to not be of this type (form: s__________ variable).
False (Mira A is interacting with interstellar gas as it is flying through space)
Take note that the Mira system is losing mass. True of False? The mass loss is caused largely because of the fact that Mira B is a pulsar star, similar to the Black Widow, and is blowing away matter from the system.
False (they're getting stronger)
(True/False) Mira's successive pulses, lasting about a decade, are progressively growing weaker.
W49B
This explosion is believed to have created our galaxy's youngest black hole, and yes, a black hole, not a neutron star. What is it's name?
This explosion is believed to have created our galaxy's youngest black hole, and yes, a black hole, not a neutron star. What is it's name?
True
(True/False) W49B is a highly distorted supernova remnant, produced by a rare type of explosion.
A
Instead of radiating out symmetrically, W49B's exploding star shot more material out from its:
A. Poles
B. Equator