Synthetic Cepheid Period–Luminosity and Period–Color Relations in Spitzer’s IRAC Bands

  • C.-C. Ngeow
  • M. Marconi
  • I. Musella
  • M. Cignoni
  • M. Marengo
  • S. M. Kanbur
Chapter
Part of the Astrophysics and Space Science Proceedings book series (ASSSP, volume 31)

Abstract

The mid-infrared period–luminosity (P–L) relation for Cepheids will be important in the JWST era, as it holds the promise of deriving the Hubble constant within 2% accuracy. We present the synthetic P–L and period–color (P–C) relations, derived from a series of stellar pulsation models with varying helium and metallicity abundance, in the Spitzer IRAC bands. Selected synthetic P–L and P–C relations were compared to the empirical relations derived from Galactic and Large Magellanic Cloud Cepheids. We also present the empirical P–L relations based on the latest distance measurements using infrared surface brightness techniques.

Keywords

Light Curf Hubble Constant Large Magellanic Cloud Instability Strip Stellar Pulsation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

CCN thanks the funding from National Science Council (of Taiwan) under the contract NSC 98-2112-M-008-013-MY3.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • C.-C. Ngeow
    • 1
  • M. Marconi
    • 2
  • I. Musella
    • 2
  • M. Cignoni
    • 3
  • M. Marengo
    • 4
  • S. M. Kanbur
    • 5
  1. 1.Graduate Institute of AstronomyNational Central UniversityJhongli CityTaiwan
  2. 2.Osservatorio Astronomico di CapodimonteNapoliItaly
  3. 3.Department of AstronomyBologna UniversityBolognaItaly
  4. 4.Department of PhysicsIowa State UniversityAmesUSA
  5. 5.Department of PhysicsState University of New York at OswegoOswegoUSA

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