Title: On the simultaneous analysis of several complete samples - The V/Vmax and Ve/Va variables, with applications to quasars
Abstract: view Abstract Citations (348) References (22) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS On the simultaneous analysis of several complete samples. The V/Vmax and Ve/Va variables, with applications to quasars. Avni, Y. ; Bahcall, J. N. Abstract Methods are derived for applying the V/Vmax variable when several complete samples are analyzed simultaneously. A new, related, variable, V(e)/V(a), which is superior to V/Vmax when sufficient observational data are available, is introduced. It is shown how statistically independent complete samples can be generated from partially overlapping samples such that each observed object appears only once in the analysis. These methods make it possible to combine the information from different complete samples, and to make an efficient use of all available data. Illustrative examples for quasars are given. It is shown how the generalized V/Vmax and V(e)/V(a) can be used to find the amount of cosmological evolution of quasars and its associated range of uncertainty. Publication: The Astrophysical Journal Pub Date: February 1980 DOI: 10.1086/157673 Bibcode: 1980ApJ...235..694A Keywords: Cosmology; Data Sampling; Quasars; Stellar Evolution; Astrophysics; Poisson Density Functions; Stellar Luminosity; Astrophysics full text sources ADS | data products SIMBAD (56) NED (56)