摘要:

AbstractIt is shown that there is no significant dependence of the frequency with which barred spirals occur on environment. Therefore, the difference between normal and barred spirals must be largely due to initial conditions. The excess of early type galaxie (in particular ellipticals and SO's) among the statistically selected binary samples is probably caused by a contamination by cluster members and will therefore result in a systematic overestimate of the masses of binary galaxies. The large fraction of multiple first‐ranked galaxies found in rich clusters of BAUTZ‐MORGANtype I is surprising in view of tidal effects and dynamical friction, which should lead to the destruction of such massive binary systems on a time scale much shorter than the age of the Unive

ISSN:0004-6337    

DOI:10.1002/asna.19793000502

出版商:WILEY‐VCH Verlag    

年代:1979

数据来源: WILEY

摘要:

AbstractWhen comparing the results of the cosmological tests obtained by various authors using various methods, it is found that there has not been any trend of convergence in the values obtained for the deceleration parameterq0, in spite of the accumulated and more accurate data. The empirical data – those on the global and the local cosmological tests and those pointing to the non‐existence of cosmic evolutionary effects – can be interpreted in a plausible way in the framework of a static EUCLIDean model. This well reconciles the non‐DOPPLERian nature of redshifts implied by the studies of the redshift phenomenon

ISSN:0004-6337    

DOI:10.1002/asna.19793000503

出版商:WILEY‐VCH Verlag    

年代:1979

数据来源: WILEY

摘要:

AbstractIn the framework of TREDER'Sdynamics, in which according to the MACH‐EINSTEIN‐doctrin the inertial masses are induced by the gravitational interaction with the particles of the cosmos, we calculate the secular post‐NEWTONian effects for the restricted three‐body problem. The dominant secular post‐NEWTONian variation of nodes and apsides is shown to be the same as in EINSTEIN'Stheory of gravitation. The formulation of the gravodynamics in the HERTZian configuration space allows – as in General Relativity – the explanation of the effect as an “geodetic precession” of the lines of

ISSN:0004-6337    

DOI:10.1002/asna.19793000504

出版商:WILEY‐VCH Verlag    

年代:1979

数据来源: WILEY

摘要:

AbstractThe number density distributions for further 10 clusters of galaxies were derived by counting galaxies on the red Palomar Sky Survey prints. For 6 clusters the radial number density distribution and the radial cumulative galaxy distribution were derived.

ISSN:0004-6337    

DOI:10.1002/asna.19793000505

出版商:WILEY‐VCH Verlag    

年代:1979

数据来源: WILEY

摘要:

AbstractThe possibility the turbulent atmosphere to act as a cause for an amplification of the optical star images is considered. This is made on introducing the turbulent atmosphere a an optical collimator set. Some considerations about the modelling and formalization of this effect are made. Finally some consequences relative to the optical record photometrical information extraction are mentioned.

ISSN:0004-6337    

DOI:10.1002/asna.19793000506

出版商:WILEY‐VCH Verlag    

年代:1979

数据来源: WILEY

摘要:

AbstractThe influence of a stochastic velocity field on the line formation is investigated. A method similar to the mean field electrodynamics is described, where only two‐point correlations are taken into account. The influence of velocity model parameters, e. g. the correlation length and the dispersion of the velocity field, on the line profiles is discussed by simplified assumption

ISSN:0004-6337    

DOI:10.1002/asna.19793000507

出版商:WILEY‐VCH Verlag    

年代:1979

数据来源: WILEY

ISSN:0004-6337    

DOI:10.1002/asna.19793000501

出版商:WILEY‐VCH Verlag    

年代:1979

数据来源: WILEY