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2005年2月分

Table for dimentional constants....

Msol = 1.989 x 10^33 gr

1 pc = 3.086 x 10^18 cm

gravitational constant = 6.672x10^-8 dyn cm^2 gr^-2

1 "Time unit" for R = 1 pc, M = 1 Msol = 1.79 Myr???

[T = sqrt(GM/R^3)]

List of globular clusters

Another list of globular clusters

Luminosity of a star with Mv=0: 86 Lsolar (Mv of Sun=4.83)

Luminosity of a star with Mbol=0: 79 Lsolar (Mbol of Sun=4.75)

Critical density 1.9x10^-29h²gcm^-3 = 2.8x10¹¹h²MsolMpc^-3