- #1
snorkack
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What are the temperature ranges of the spectral classes?
Oh Be A Fine Girl, Kiss Me Like That Y?
Note that L, T and Y are added after M. Nothing is added before O. So O class... The O9-B0 border is somewhere around 30 000 K. Does lack of earlier class mean that O class starts from infinity? What is the temperature of an O0 star? What spectral class are Magnificent 7?
B class spans from about 30 000 K to the B9-A0 border around 10 000 K. This makes a temperature ratio of about 3.
A class starts from 10 000 K and A9-F0 border is around 7300 K. This makes a temperature ratio of about 1,37.
F class starts from 7300 K and F9-G0 border is around 6000 K. This makes a temperature ratio of about 1,22.
G class starts from 6000 K and G9-K0 border is around 5300 K. This makes a temperature ratio of about 1,13.
K class starts from 5300 K and K9-M0 border is around 3900 K. This makes a temperature ratio of about 1,36.
M class starts from 3900 K, and M9-L0 border is around 2300 K. This makes a temperature ratio of about 1,7.
L class starts around 2300 K, and L9-T0 border seems to be around 1500 K. This makes a temperature ratio of about 1,53.
T class starts about 1500 K, and T9-Y0 border seems to be around 620 K. This makes a temperature ratio of about 2,4.
Y class starts about 620 K and goes to where? Zero? What is the temperature of a Y9 object?
Oh Be A Fine Girl, Kiss Me Like That Y?
Note that L, T and Y are added after M. Nothing is added before O. So O class... The O9-B0 border is somewhere around 30 000 K. Does lack of earlier class mean that O class starts from infinity? What is the temperature of an O0 star? What spectral class are Magnificent 7?
B class spans from about 30 000 K to the B9-A0 border around 10 000 K. This makes a temperature ratio of about 3.
A class starts from 10 000 K and A9-F0 border is around 7300 K. This makes a temperature ratio of about 1,37.
F class starts from 7300 K and F9-G0 border is around 6000 K. This makes a temperature ratio of about 1,22.
G class starts from 6000 K and G9-K0 border is around 5300 K. This makes a temperature ratio of about 1,13.
K class starts from 5300 K and K9-M0 border is around 3900 K. This makes a temperature ratio of about 1,36.
M class starts from 3900 K, and M9-L0 border is around 2300 K. This makes a temperature ratio of about 1,7.
L class starts around 2300 K, and L9-T0 border seems to be around 1500 K. This makes a temperature ratio of about 1,53.
T class starts about 1500 K, and T9-Y0 border seems to be around 620 K. This makes a temperature ratio of about 2,4.
Y class starts about 620 K and goes to where? Zero? What is the temperature of a Y9 object?