NTT PHOTOMETRY IN UBV OF THE DISTANT GLOBULAR-CLUSTER NGC-1841

We present UBV CCD photometry of 1347 stars in the populous globular c luster NGC 1841 located approximately 15 degrees from each of the Mage llanic Clouds and probably dynamically associated with the LMC. The ph otometric limit was close to the cluster's main-sequence turnoff. The structure of the blue horizontal branch and possible radial dependence of the horizontal branch luminosity function are discussed. We estima te the cluster metallicity as [Fe/H]=-2.0+/-0.15, the reddening as E(B -V)=0.17+/-0.03, and the true distance modulus as (m-M)(0)=18(m).26+/- 0.11, somewhat lower than the majority of recent estimates of the LMC distance modulus. (C) 1996 American Astronomical Society.