Period-luminosity relations derived from the ogle-III fundamental mode cepheids

Chow Choong Ngeow, Shashi M. Kanbur, Hilding R. Neilson, A. Nanthakumar, John Buonaccorsi

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In this paper, we have derived Cepheid period-luminosity (P-L) relations for the Large Magellanic Cloud (LMC) fundamental mode Cepheids, based on the data released from OGLE-III. We have applied an extinction map to correct for the extinction of these Cepheids. In addition to the VIW-band P-L relations, we also include JHK and four Spitzer IRAC-band P-L relations, derived by matching the OGLE-III Cepheids to the Two Micron All Sky Survey and SAGE data sets, respectively. We also test the nonlinearity of the Cepheid P-L relations based on extinction-corrected data. Our results (again) show that the LMC P-L relations are nonlinear in VIJH bands and linear in KW and the four IRAC bands, respectively.

Original languageEnglish
Pages (from-to)691-696
Number of pages6
JournalAstrophysical Journal
Issue number1
StatePublished - 1 Mar 2009


  • Cepheids
  • distance scale


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