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Transcript
Name: ______________________________________
Period: _________
STAR BIOGRAPHY
Name of Star: ________________________________________________
Properties of the Star
Luminosity: __________________ (brightness x that of our sun)
Temperature: ____________________
Color: __________________________
Radius:_____________________ (compared to the sun)
Sketch of Galaxy:
Location of Star
This star is ______________ light years from Earth.
It is in the _______________________ galaxy.
It is a _________________________ shaped galaxy.
Location on Hertzsprung-Russell Diagram
(L☉)
Label the axes correctly and plot the star on the H-R diagram.
Sun
40,000
25,000
10,000
7,000
6,000
5,000
3,000
(K)
What is the current “life” stage of the star? ________________________________________
Timeline of Star “Life”
“Birth”
Construct a story board for the stages in this star’s “life.”
“Death”
Present
Comparison of this Star to the Sun
Sun
1. Define nebula-2. Define star-3. Define galaxy-4. Why does Earth get more energy from the Sun than from all the other stars in the universe combined?
Star Biography: Magazine Feature Story Example
FUN TITLE for Article
Make up a name for your magazine.
Picture of Star in Current Stage
Describe the Life Cycle of your Star in Narrative Form
*Use the correct color!
*May include diagram
*Talk about the birth of your star, include its age if
known, what life cycle it is in, and predict what will
happen in the future with your star. (Include each Life
Cycle Stage)
Star Profile
(Facts, luminosity, temperature,
size, etc.)
Creative/Funny Column
*5 Things Your Star Wants to Tell
You
*Astronomy Jokes
*Star Advice Column
ETC…
Color and Temperature of Star
Spectral class: The color of the star. Hot stars are bluer, cool stars are redder. In descending order from
hottest (most blue) to coolest (most red), the spectral classes are: O B A F G K M. Each spectral class letter can
be subdivided into ten smaller steps or gradations, i.e. class A breaks down into A0 through A9. A0 would be
the hottest class A star (only slightly cooler than B9), while A5 would be half way in between A0 and F0. The
spectral class corresponds to the surface temperature and color as follows:
Spectral class
Temperature
Color
O5
40 000 K
blue
B0
27 000 K
blue-white
B5
16 000 K
A0
10 000 K
A5
8 200 K
F0
7 200 K
F5
6 700 K
G0
6 000 K
yellow
G2
5 800 K
(our sun)
G5
5 500 K
K0
5 100 K
K5
4 300 K
M0
3 700 K
M5
3 000 K
white
yellow-white
orange
red
(These temperatures are in Kelvins. To convert from Kelvins (K) to degrees Celsius (°C), just subtract 273.)
Mitchell N. Charity has a webpage that graphically demonstrates "What color are the stars?". This page is best
viewed in 16-bit or better Color resolution.
From: http://www.stellar-database.com/fields.html