ABSTRACT: We review the distance modulus in twelve different cosmologies: the ΛCDM model, the wCDM model, the Cardassian model, the flat case, the ?CDM cosmology, the Einstein—De Sitter model, the ...
We analyze a simple model for tired light in a cosmological environment, a generalized model, and a spectroscopic model. The three models are tested on different compilations for the distance modulus ...
AbstractRecent reanalyses of Hipparcos parallax data confirm a previously noted discrepancy with the Pleiades distance modulus estimated from main-sequence fitting in the color-magnitude diagram. One ...
Bono, G.; Iannicola, G.; Braga, V. F.; Ferraro, I.; Stetson, P. B.; Magurno, D.; Matsunaga, N.; Beaton, R. L.; Buonanno, R.; Chaboyer, B.; Dall'Ora, M.; Fabrizio, M ...
AbstractWe present CCD uvbyβ, photometry of 1419 stars located in the central region of the rich Galactic open cluster NGC 6705 (M11). Our study utilizes photometric data obtained with the 0.9 m WIYN ...