Astron. Astrophys. 347, 532-549 (1999)

Appendix A: the distance to 30 Doradus

The performance of our Bayesian analysis of the CMS can be assessed by using it to determine the most likely values for , S, and R_V. As explained in Paper I UBV data alone does not constrain R_V strongly. Nevertheless, it can be seen in Fig. A1a that both S and R_V determined photometrically agree with the values from Paper I. The best photometric values are thus S=0.84, R_V = 3.05.

Fig. A1. a Photometric map as a function of S and RV. The ellipse marks the 1 region around the best solution found in Paper I. b   as a function of the assumed to 30 Doradus. The curve for the best RV value has a minimum at 18.45 magnitudes, in excellent agreement with previous determinations.

Using R_V = we find a true distance modulus of to 30 Doradus in excellent agreement with the best determined distance of to the LMC (Gieren et al. 1998).

© European Southern Observatory (ESO) 1999

Online publication: June 30, 1999
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