6 papers · 1 filter
12CO mapping of the low-metallicity BCD galaxy Mrk86
A. Gil de Paz, S. A. Silich, B. F. Madore +3
We have mapped the 12CO J=1-0 and J=2-1 line emission in Mrk86, one of the most metal-deficient Blue Compact Dwarf galaxies so far detected in 12CO. The 12CO emission is distribute…
Type Ia Supernovae and the Value of the Hubble Constant
Brad K. Gibson, Chris B. Brook
The methodology involved in deriving the Hubble Constant via the calibration of the corrected peak luminosities of Type Ia supernovae (SNe) is reviewed. We first present a re-analy…
The Hubble Constant from the HST Key Project on the Extragalactic Distance Scale
Laura Ferrarese, Brad Gibson, Daniel Kelson +14
The final efforts of the HST Key Project on the Extragalactic Distance Scale are presented. Four distance indicators, the Surface Brightness Fluctuation method, the Fundamental Pla…
A Cepheid distance to NGC 4258
Eyal Maoz, Jeffrey A. Newman, Laura Ferrarese +5
Distances measured using Cepheid variable stars have been essential for establishing the cosmological distance scale and the value of the Hubble constant. These stars have remained…
A Cepheid Distance to the Fornax Cluster
B. F. Madore, W. L. Freedman, N. Silbermann +13
The Hubble Space Telescope is being used to measure accurate Cepheid distances to nearby galaxies with the ultimate aim of determining the Hubble constant, H_0. For the first time,…
The Hubble Space Telescope Key Project to Measure the Hubble Constant
Wendy L. Freedman, Jeremy R. Mould, Robert C. Kennicutt +1
A review of the Hubble Space Telescope H0 Key Project is given, as presented at the IAU Symposium 183 on "Cosmological Parameters" held in Kyoto, Japan in August, 1997. An outline…