Redshift-Space Artifacts from a Filament Infall Model and Rotational Flow Models

Details Redshift-Space Artifacts from a Filament Infall Model and Rotational Flow Models Redshift-Space Artifacts from a Filament Infall Model and Rotational Flow Models

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...20514807m&link_type=abstract

American Astronomical Society Meeting 205, #148.07; Bulletin of the American Astronomical Society, Vol. 36, p.1597

Astronomy and Astrophysics

Astronomy

Scientific paper

Both the Ursa Major region (in the Local Supercluster) and the Dorado region (in the Southern Supercluster) show structures in redshift-space that resemble artifacts expected for flow with a non-zero curl about a small central cluster: a small finger of god bisecting a bowtie shape. Previously, the Tully-Fisher relation was used to support the identification of the finger in Ursa Major (Praton & Berger 2001). We continue the effort to understand these bowtie structures by investigating the redshift-space artifacts produced by various types of flow. We present results from toy model investigations of (1) a filamentary radial infall model, and (2) rotational models with both circular and elliptical orbits.

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