Question

1. Match something in its possible evolutionary line with its progenitor. Each answer must be used at least once.

Red giant

Type II supernova

Type Ia Supernova

gravitational waves

Nova

White dwarf and planetary nebula

Black hole

black dwarf

A.	Sun-like star
B.	Red Supergiant
C.	Binary system with a white dwarf
D.	the collision of two neutron stars or two black holes
E.	white dwarf
F.	O-type star of 50Msun

2.

If Stars Juanita and Peter have the same absolute brightness, but Star Peter is 3 times farther away from Earth than Star Juanita, then Star Peter's apparent magnitude is _________ times the apparent magnitude of Star Juanita.

^o Earth _* Juanita      _* Peter

		9
		3
		1
		1/3
		1/9

Answer 1

Red giant will form a binary system with white dwarf.

Type 2 supernovae occur on collision of two neutron stars and black holes.

Type 1 a supernovae occur in binary star with one star is white dwarf.

Gravitational waves are generated on collision of two neutron star or black holes.

Nova always involve white dwarf in a closed binary system.

White dwarf and planetary naebulas are related with sun like star.

Black holes made by explosion of O type star of mass equal to the 50 times the mass of sun.

Black dwarf is a theoretical stellar remnant, specifically when a white dwarf that has cooled sufficiently that it no longer emits significantly heat or light. So related to white dwarf

It is 1/9 times that of star jiniya, because magnitude is inversely proportional to distance square.

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