AAS 201st Meeting, January, 2003
Session 123. Supernovae and Other Distance Indicators
Poster, Thursday, January 9, 2003, 9:20am-4:00pm, Exhibit Hall AB

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[123.12] The NICMOS Infared Surface Brightness Fluctuation Survey

J. B. Jensen (Gemini), B. J. Barris, J. L. Tonry (Hawaii/Institute for Astronomy)

Surface brightness fluctuation (SBF) distances were determined for a collection of 193 galaxies observed using NICMOS on the Hubble Space Telescope. This large and uniform data set allowed us to accurately measure the Hubble flow out to 10,000 km/s and determine the amplitudes and directions of streaming motions in the local universe. We present a new measurement of the dipole motion of the Local Group with respect to the cosmic microwave background. This study also provides an update to the measured IR SBF Hubble constant, using improved Cepheid variable star and F160W (1.6 micron) SBF calibrations.

This research was supported in part by NASA grant GO-07453.0196A. J. Jensen acknowledges the support of the Gemini Observatory, which is operated by AURA on behalf of the international Gemini partnership.

The author(s) of this abstract have provided an email address for comments about the abstract: jjensen@gemini.edu

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Bulletin of the American Astronomical Society, 34, #4
© 2002. The American Astronomical Soceity.