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For refcode 1994ApJ...432...42S:
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1994ApJ...432...42S THE DISTANCES TO FIVE TYPE II SUPERNOVAE USING THE EXPANDING PHOTOSPHERE METHOD, AND THE VALUE OF H_0_ BRIAN P. SCHMIDT AND ROBERT P. KIRSHNER Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138 RONALD G. EASTMAN Board of Studies in Astronomy and Astrophysics, Lick Observatory, University of California, Santa Crux CA 95064 MARK M. PHILLIPS, NICHOLAS B. SUNTZEFF, AND MARIO HAMUY Cerro Tololo Inter-American Observatory,1 Casilla 603, La Serena, Chile JOSE MAZA Universidad de Chile, Dept. de Astronomia, Casilla 36-D, Santiago, Chile AND ROBERTO AVILES Cerro Tololo Inter-American Observatory, Casilla 603, La Serena, Chile Received 1993 November 29; accepted 1994 February 25 ABSTRACT We have used observations gathered at CTIO to measure distances by the expanding photosphere method (EPM) to five Type II supernovae. These supernovae lie at redshifts from cz = 1100 km s^-1^ to cz = 5500 km s^- 1^, and increase to 18 the number of distances measured Using EPM. We compare distances derived to 11 Type II supernovae with distances to their host galaxies measured Using the Tully-Fisher method. We find that the Tully-Fisher distances average 11% +/- 17% smaller. The comparison shows no significant evidence of any large distance-dependent bias in the Tully-Fisher distances. We employ the sample of EPM distances from 4.5 Mpc to 180 Mpc to derive a value for the Hubble constant. We find H_0_ = 73 +/- 6(statistical) +/-7(systematic)km s^-1^ Mpc^-1^. Subject headings: distance scale - supernovae: general
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