The NOG Sample: Galaxy Systems and 3D Real-Space Galaxy Density

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dc.creatorMarinoni, C.
dc.creatorGiuricin, G.
dc.creatorCeriani, L.
dc.creatorPisani, A.
dc.date1999-09-27
dc.date.accessioned2026-07-07T02:33:29Z
dc.date.available2026-07-07T02:33:29Z
dc.descriptionWe discuss the 3D real-space reconstruction of the optical galaxy density field in the local Universe as derived from the galaxies of the Nearby Optical Galaxy (NOG) sample. NOG is a distance-limited (cz_{LG} < 6000 km/s) and magnitude--limited (B<14 mag) sample of 7076 optical galaxies which covers 2/3 (8.29 sr) of the sky (|b|>20). We have replaced ``true distances'' measurements for all the objects in order to correct for redshif distortions. Using homogenized photometric information for the whole sample, NOG is meant to be an approximation to a homogeneous all-sky 3D optically selected and statistically well-controlled galaxy sample that probes in great detail volumes of cosmological interest. Our goal is to construct a reliable, robust and unbiased field of density contrasts covering interesting regions of galaxy and mass overdensities of the local universe.
dc.description4 pages, 3 figures. To appear in Proceedings of the Cosmic Flows Workshop, Victoria, B. C., Canada, July 1999, eds. S. Courteau, M. Strauss, and J. Willick
dc.identifierhttps://arxiv.org/abs/astro-ph/9909444
dc.identifierhttp://arxiv.org/abs/astro-ph/9909444
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/14865
dc.subjectAstrophysics
dc.titleThe NOG Sample: Galaxy Systems and 3D Real-Space Galaxy Density
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