arXiv subjects
Publications and source records attributed to B. Reindl.
Six different distance determination methods of Virgo cluster members yield a mean distance modulus of (m-M)^0(Virgo) = 31.60 +/- 0.09 (20.9 +/- 0.9 Mpc). This value can be carried out to > 10,000 km/s by means of 31 clusters whose distances are well known relative to the Virgo cluster. They yield H_0 = 56 +/- 4 (random error) +/- 6 (systematic error), independent of local streaming motions.
Blue Supernovae of Type Ia (SNe Ia) have become the most important objects in cosmology being of exceptionally uniform luminosity. Used as relative distance indicators they map deviations from pure Hubble flow and determine the cosmological constant Lambda. Once their absolute magnitude is determined they provide the best estimate of the large-scale value of the Hubble constant H_0. An HST project is reviewed where Cepheid distances are used for the luminosity calibration of SNe Ia. The mean luminosity of 8 SNe Ia is M_B(max)= -19.47 +/- 0.07, M_V(max)= -19.48 +/- 0.07, corresponding -- after small corrections for second parameters -- to H_0(cosmic)= 59 +/- 5.