Exploring Variable Stars and Compact
Stars: Understanding the Diversity of
Stellar Phenomena
ASTRONOMY (BSED SCIENCE 4 – UNIT EARNER)
Prepared by: Ugot, Jade R.
Introduction to
Variable Stars
Variable stars are stars that
exhibit changes in
brightness over time.
Classifications of Variable
Stars
INTRINSIC VARIABLES: Stars whose
variations in brightness are due to internal
processes.
EXTRINSIC VARIABLES: Stars whose
brightness changes due to external factors
like eclipses or interactions with companion
stars.
INTRINSIC VARIABLE
STARS
EXAMPLES:
Cepheid
variables,
Lyrae stars, and Mira variables.
Mira variables
RR
EXTRINSIC VARIABLE
STARS
EXAMPLES: Eclipsing binaries, Cataclysmic
variables, and Supernovae.
Supernova
e
TRANSITION
TO
COMPACT
STARS
Compact Stars
Are dense stellar
remnants that result
from the evolution of
massive stars.
White Dwarfs
White dwarfs are the
remnants of low to
medium-mass
stars
after they exhaust their
nuclear fuel.
Neutron Stars
Neutron
stars
are
collapsed
core
of
massive stars after a
supernova explosion.
Black Holes
Black Holes are regions
of spacetime where
gravity is so strong that
nothing, not even light,
can escape.
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