A redshift survey of IRAS galaxies. II - Methods for determining self-consistent velocity and density fields

Abstract

view Abstract Citations (218) References (46) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Redshift Survey of IRAS Galaxies. II. Methods for Determining Self-consistent Velocity and Density Fields Yahil, Amos ; Strauss, Michael A. ; Davis, Marc ; Huchra, John P. Abstract Methods are presented for deriving the density field and the resulting linear-theory velocity field from an all-sky redshift survey of IRAS galaxies. The luminosity function of IRAS galaxies is measured using a maximum-likelihood technique independent of density inhomogeneities. Within its range of validity, it is found to be in excellent agreement with previously published luminosity functions. Self-consistent solutions for the true spatial positions of the IRAS galaxies are found, given their redshifts and peculiar velocities. The ambiguity inherent in triple-valued regions is overcome either by sufficient smoothing, or by using prior information from peculiar velocity maps obtained independently. Publication: The Astrophysical Journal Pub Date: May 1991 DOI: 10.1086/169985 Bibcode: 1991ApJ...372..380Y Keywords: Cosmology; Density Distribution; Galaxies; Infrared Astronomy; Red Shift; Velocity Distribution; Computational Astrophysics; Infrared Astronomy Satellite; Luminosity; Sky Surveys (Astronomy); Spatial Distribution; Astrophysics; GALAXIES: REDSHIFTS; INFRARED: SOURCES; LUMINOSITY FUNCTION full text sources ADS | data products SIMBAD (3) NED (1) Related Materials (6) Erratum: 1991ApJ...381..348Y Part 1: 1990ApJ...361...49S Part 4: 1991ApJ...372..394D Part 5: 1992ApJ...385..421S Part 6: 1992ApJ...397..395S Part 7: 1992ApJS...83...29S