NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-24 T22:29:31 PDT
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For refcode 2011A&A...531A.134T:
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NED Abstract

Copyright by European Southern Observatory (ESO). Reproduced by permission
2011A&A...531A.134T New period-luminosity and period-color relations of classical Cepheids. IV. The low-metallicity galaxies IC 1613, WLM, Pegasus, Sextans A and B, and Leo A in comparison to SMC Tammann, G. A.; Reindl, B.; Sandage, A. Abstract. The metal-poor, fundamental-mode (P0) and first-overtone (P1) Cepheids in the dwarf galaxies IC 1613, WLM, Pegasus, Sextans A, Sextans B, and Leo A are compared with the about equally metal-poor Cepheids of the Small Magellanic Cloud (SMC). The period-color (P-C) and period-luminosity (P-L) relations of the seven galaxies are indistinguishable, but differ distinctly from those in the Large Magellanic Cloud (LMC) and the solar neighborhood. Adopting (m-M)^0_SMC=18.93^ from independent evidence, one can determine reliable distance moduli for the other dwarf galaxies of (m - M)^0^ = 24.34 +/- 0.03, 24.95 +/- 0.03, 24.87 +/- 0.06, 25.60 +/- 0.03 (mean for Sextans A & B), and 24.59 +/- 0.03, respectively. Key words: stars: variables: Cepheids, distance scale
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