THE MID-INFRARED TULLY-FISHER RELATION: CALIBRATION OF THE TYPE Ia SUPERNOVA SCALE AND H{sub 0}
- Institut de Physique Nucleaire, Universite Claude Bernard Lyon I, F-69100 Lyon (France)
This Letter builds on a calibration of the Type Ia supernova (SNIa) absolute distance scale begun with a core of distances based on the correlation between galaxy rotation rates and optical I{sub C} -band photometry. This new work extends the calibration through the use of mid-infrared photometry acquired at 3.6 {mu}m with the Spitzer Space Telescope. The great virtue of the satellite observations is the constancy of the photometry at a level better than 1% across the sky. The new calibration is based on 39 individual galaxies and 8 clusters that have been the sites of well-observed SNIa. The new 3.6 {mu}m calibration is not yet as extensively based as the I{sub C} -band calibration but is already sufficient to justify a preliminary report. Distances based on the mid-infrared photometry are 2% greater in the mean than reported at the I{sub C} band. This difference is only marginally significant. The I{sub C} -band result is confirmed with only a small adjustment. Incorporating a 1% decrease in the Large Magellanic Cloud distance, the present study indicates H{sub 0} = 75.2 {+-} 3.0 km s{sup -1} Mpc{sup -1}.
- OSTI ID:
- 22078500
- Journal Information:
- Astrophysical Journal Letters, Vol. 758, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 2041-8205
- Country of Publication:
- United States
- Language:
- English
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