Journal of Astronomy and Space Sciences

The Korean Space Science Society (한국우주과학회)
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HST NIC3 PHOTOMETRY OF METAL-RICH GLOBULAR CLUSTERS PALOMAR 6, LILLER 1, AND 47 TUC (NGC 104)

  • Lee, Jae-Woo (Astrophysical Research Center for the Structure and Evolution of the Cosmos, Department of Astronomy and Space Science, Sejong University)
  • Published : 2004.09.01
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Abstract

We present HST NIC3 photometry of metal-rich globular clusters Palomar 6, Liller 1 and 47 Tuc (NGC 104). We discuss the interstellar reddening law for the HST NICMOS F110W/F160W photometric system which depends on the temperature of the source. The distance moduli and interstellar reddening values for Palomar 6 and Liller 1 are estimated by comparing the magnitudes and colors of RHB stars in the clusters with those of 47 Tuc. We obtain $(m-M)_0=14.48$mag and E(B-V)=1.34mag for Palomar 6 and $(m-M)_0=15.17$mag and E(B-V)=2.50 mag for Liller 1.

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