Extragalactic Cepheids from Spitzer Archival Data

Details Extragalactic Cepheids from Spitzer Archival Data Extragalactic Cepheids from Spitzer Archival Data

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop50029n&link_type=abstract

Spitzer Proposal ID #50029

Physics

Scientific paper

We have recently derived the Cepheid Period-Luminosity (PL) relations in the IRAC bands using archival Spitzer data from the SAGE project. These PL relations can be used in future distance scale studies with the James Webb Space Telescope, which will mainly operate in the near and mid infrared. We propose to test the suitability of the LMC IRAC band PL relations for extragalactic work by applying them to extragalactic Cepheids present in archival Spitzer observations of three nearby galaxies: WLM, IC 1613 and M33. We request a funding of 25,000 to carry out this proposal.

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