Constraint on Heavy Element Production in Inhomogeneous Big-Bang Nucleosynthesis from the Light Element Observations
Figure 2
Constraints on the plane from the observations of light element abundances. The region below the red line is an allowed one obtained from observation (9). Constraints from the D/H observation (12) are shown by the region below the blue line. The gray region corresponds to the allowed parameters determined from the two observations of and D/H. There is another region which is still consistent with only D/H in the upper right direction. This is the contribution of the low-density region with . The D abundance tends to decrease against the baryon density for . The dotted lines show the contours of the baryon-to-photon ratio in the high-density region. Filled squares indicate the parameters for heavy element nucleosynthesis adopted in Section 4.
