Estimates for the u, g, r, i, z colors of Vega and the Sun

Assuming V=+0.03 and U–B = B–V = V–R_c = R_c–I_c = 0.00, we find for the A0V star Vega the following:

g   = -0.08  (±0.03)
u-g = +1.02  (±0.08)
g-r = -0.25  (±0.03)
r-i = -0.23  (±0.02)
i-z = -0.17  (±0.02)

where we used the Bilir, Karaali & Tunçel (2005) transformation for g and the Rodgers et al. (2006) transformations (plus the u′g′r′i′z′-to-ugriz transformations) for the u–g, g–r, r–i, and i–z colors. The error bars in parentheses are rough estimates of the systematic errors based upon the different values that different sets of transformation equations yield.

Assuming M(V)=+4.82, U–B=+0.195, B–V=+0.650, V–R_c=+0.36, and R_c–I_c=+0.32, we find for the Sun the following:

M(g)= +5.12  (±0.02)
u-g = +1.43  (±0.05)
g-r = +0.44  (±0.02)
r-i = +0.11  (±0.02)
i-z = +0.03  (±0.02)

where, again, we used the Bilir, Karaali & Tunçel (2005) transformation for g and the Rodgers et al. (2006) transformations (plus the u′g′r′i′z′-to-ugriz transformations) for the u–g, g–r, r–i, and i–z colors. As above, the error bars in parentheses are rough estimates of the systematic errors based upon the different values that different sets of transformation equations yield.