Post on 18-May-2015
transcript
Where are the Stars like our Sun?
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Are all the stars we see in the night sky like our Sun?
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TYPES OF STARS IN OUR GALAXY
90% HealthyStabl
e
9% White Dwarfs 1%
Giants
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TYPES OF STARS IN OUR GALAXY
9% White Dwarfs 1%
Giants
HealthyStabl
e Stars
7% Yellow/White
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TYPES OF STARS IN OUR GALAXY
9% White Dwarfs 1%
Giants
HealthyStabl
e
7% Yellow/White
4% Hot, Blue
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TYPES OF STARS IN OUR GALAXY
9% White Dwarfs 1%
Giants
4% Hot, Blue
7% Yellow/White
HealthyStabl
e
79%
Cool
Red
But what do we mostly see with just our eyes?
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9% White Dwarfs 1%
Giants
4% Hot, Blue
7% Yellow/White
HealthyStabl
e
79%
Cool
Red
We see the
giants
We see the hot, bluish stars
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Orion
< Giant
< Giant
Giant >
< Giant
< Hot Bluish + Giant (Double star)
< Giant
Giant >
Orion
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< Giant
< BETELGUESE:Giant
Giant >
< Giant
< Hot Main Seq(O) + Giant
< Giant
RIGEL: Giant >
Sirius is Hot Main Seq (A)
Procyon is Giant
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Triangle
< Giant
< Giant
< Yellow: Giant + Blue: Hot Bluish (Double star - Albireo)
< Giant
< Hot Bluish
< Giant
Giant >
< Hot Bluish
Giant
Hot Bluish >
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Triangle
<DENEB:Giant
< Giant
< Yellow: Giant + Blue: Hot Main Seq (B) (Albireo)
< Giant
< VEGA: Hot Main Seq (A)
< Giant
Giant >
Dbl-Dbls are all Hot Main Seq (A) < Hot Main Seq
(B)Giant
ALTAIR: Hot Main Seq (A) >
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Big Dipper& PolarisBig Dipper & Polaris
< Giant
< Mizar & Alcor: Both are Hot Bluish
Polaris: Giant >
Hot Bluish >
< Hot Bluish
Hot Bluish >
< Hot Bluish
Hot Bluish >
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Big Dipper & Polaris
< Giant
< Mizar & Alcor: Both are Hot Main Seq (A)
Polaris: Giant >
Hot Main Seq (A) >
< Hot Main Seq (B)
Hot Main Seq (A) >
< Hot Main Seq (A)
Hot Main Seq (A) >
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Cassiopeia
< Giant<
Giant
Giant >
< Giant
< Hot BluishSun-like Star >
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Cassiopeia
< Giant<
Giant
Giant >
< Giant
< Hot Main Seq (B)
Sun-like Star >
Eta Cassiopeiae: Yellow-White Main Sequence G
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Cetus
Tau Ceti >
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Cetus
Tau Ceti >
Main Sequence G
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Kepler Search Area
100,000 stars for four years!
Vega
Deneb
Altair
Find the NASA Night Sky Network
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