1. What is a star & how many different kinds are there?
By: ADRIAN SEAN D. APARILLA
Aaron Kyle R. Daug
Environmental science
Grade 6 - Neil Armstrong

2. Outline Sean : Aaron : All About stars Classifications History
Descriptions
Life Cycle
Aaron :
Types of Stars
Definitions for every Star

3. ALL ABOUT STARS

4. CLASSIFICATIONS

5. An easy mnemonic for remembering these is:
O - oh
B - be
A - a
F - fine
G - girl
K - kiss
M - me

6. HISTORY Ancient people: quadrant 1584 : Giordana Bruno
Greek astronomers: Ptolemy and Hipparchus
20th century

7. DESCRIPTIONS OF STARS a luminous globe of gas
nebulae & consist of hydrogen and helium gas
2000°C to above 30,000°C
brightest stars times that of the Sun
smallest mass for a star is about 8% that of the Sun

9. DIFFERENT KINDS OF STAR

10. The different kinds of stars are:
Yellow dwarf stars
Orange dwarf stars
Red dwarf stars
Brown dwarfs
Blue giant stars
Red giant stars
Red super giant stars
White dwarfs
Black dwarfs
Neutron stars

11. Yellow Dwarf Stars (the sun, Alpha Centauri A, Kepler-22)
Lifetime: billion years
Evolution: early, middle
Temperature: 5, ,300 °C
Spectral Types: G, F
Luminosity:
Radius:
Mass:
Prevalence: 10%

12. Brown Dwarfs
Lifetime: unknown (long)
Evolution: not evolving
Temperature: 0 - 1,800 °C
Spectral Types: L, T, Y (after M)
Luminosity: ~
Radius:
Mass:
Prevalence: unknown (many)

13. Orange Dwarf Stars(Alpha Centauri B and Epsilon Eridani)
Lifetime: billion years
Evolution: early, middle
Temperature: 3, ,000 °C
Spectral Types: K
Luminosity:
Radius:
Mass:
Prevalence: 11%

14. Red Dwarf Stars(Proxima Centauri, Barnard's Star and Gliese 581)
Lifetime: billion years
Evolution: early, middle
Temperature: 1, ,500 °C
Spectral Types: M
Luminosity:
Radius:
Mass:
Prevalence: 73%

15. Red Supergiant Stars (Betelgeuse and Antares)
Lifetime: million years
Evolution: late
Temperature: 3, ,000 ºC
Spectral Types: K, M
Luminosity: 1, ,000
Radius:
Mass:
Prevalence: %

16. Blue Giant Stars(Rigel) Lifetime: 3 - 4,000 million years
Evolution: early, middle
Temperature: 7, ,000 °C
Spectral Types: O, B, A
Luminosity: ,000,000
Radius:
Mass:
Prevalence: 0.7%
hubpages.com

17. Red Giant Stars(Aldebaran and Arcturus)
Lifetime: billion years
Evolution: late
Temperature: 3, ,000 °C
Spectral Types: M, K
Luminosity:
Radius:
Mass:
Prevalence: 0.4%

18. White Dwarfs(Sirius B and Van Maanen's star)
Lifetime: years
Evolution: dead, cooling
Temperature: 4, ,000 ºC
Spectral Types: D (degenerate)
Luminosity:
Radius:
Mass:
Prevalence: 4%
hubpages.com

19. Black Dwarfs
Lifetime: unknown (long)
Evolution: dead
Temperature: < -270 °C
Spectral Types: none
Luminosity: infinitesimal
Radius:
Mass:
Prevalence: ~0%

20. Neutron Stars
Lifetime: unknown (long)
Evolution: dead, cooling
Temperature: < 2,000,000 ºC
Spectral Types: D (degenerate)
Luminosity: ~
Radius: km
Mass:
Prevalence: 0.7%

21. References & Sources: > kidsastronomy
References & Sources: > kidsastronomy.com > Wikipedia, the free encyclopedia > en.wikipedia.org > > > hubpages.com > > > > >

22. THANK YOU