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astro-ph1999
Implications of an Obscured AGN Model for the X-ray Background at Sub-mm and Far Infra-Red Wavelengths
K. F. Gunn, T. Shanks
Models invoking large populations of obscured AGN are known to provide good fits to the spectrum of the X-ray background and the observed soft and hard X-ray number counts. An impo…
astro-ph1999
A Test of Tully-Fisher Distance Estimates Using Cepheids and Type Ia Supernovae
T. Shanks
We update and extend the results of Shanks (1997, MNRAS, 290, L77) by making a direct test of Tully-Fisher distance estimates to thirteen spiral galaxies with HST Cepheid distances…