System Transformations

IRSF+SIRIUS

Updated on June 24, 2003. More detailed information is available here.

(J-H)_CIT = (0.980+/-0.010)×(J-H)_IRSF + (0.029+/-0.013) ; for (J-H)_IRSF > 0.35
(J-H)_CIT = (1.047+/-0.003)×(J-H)_IRSF ; for (J-H)_IRSF < 0.35
(H-K)_CIT = (0.912+/-0.020)×(H-Ks)_IRSF
(J-K)_CIT = (0.963+/-0.008)×(J-Ks)_IRSF + (0.015+/-0.014) ; for (J-Ks)_IRSF > 0.45
(J-K)_CIT = (1.009+/-0.003)×(J-Ks)_IRSF ; for (J-Ks)_IRSF < 0.45

J_CIT = J_IRSF - 0.035×(J-Ks)_IRSF + 0.015 ; for (J-Ks)_IRSF > 0.45
J_CIT = J_IRSF ; for (J-Ks)_IRSF < 0.45
H_CIT = J_CIT - (J-H)_CIT
K_CIT = J_CIT - (J-K)_CIT

for the case of no J observation :
H_CIT = H_IRSF - 0.074×(H-Ks)_IRSF
K_CIT = H_CIT - (H-K)_CIT

UH88+SIRIUS

(J-H)_CIT = (1.037+/-0.021)×(J-H)_UH - (0.002+/-0.017)
(H-K)_CIT = (0.979+/-0.025)×(H-K)_UH - (0.013+/-0.018)
(J-K)_CIT = (1.055+/-0.014)×(J-K)_UH - (0.002+/-0.022)

J_CIT = J_UH - (0.013+/-0.017)×(J-K)_UH + (0.012+/-0.030)
H_CIT = H_UH - (0.029+/-0.029)×(J-H)_UH + (0.007+/-0.033)
K_CIT = K_UH - (0.024+/-0.020)×(J-K)_UH + (0.018+/-0.035)