SHELLFLOW: The First Homogeneous All-Sky TF Survey at 6000 km/s

Details SHELLFLOW: The First Homogeneous All-Sky TF Survey at 6000 km/s SHELLFLOW: The First Homogeneous All-Sky TF Survey at 6000 km/s

1998-09-17

arxiv.org/abs/astro-ph/9809224v1

Astronomy and Astrophysics

Astrophysics

4 pages. To appear in ``Wide Field Surveys in Cosmology'', eds. Y. Mellier and S. Colombi, Editions Frontieres (1998)

Scientific paper

We present a new optical Tully-Fisher (TF) investigation for a complete, full-sky sample of 297 Sb-Sc spirals with redshifts between 4500 and 7000 km/s. The survey was specifically designed to provide uniform, well- calibrated data over both hemispheres. All previous TF surveys within the Supergalactic shell (cz < 6000 km/s) have relied on matching separate data sets in the Northern and Southern hemispheres and thus cannot attain full- sky homogeneity. Analyses of the cosmological dipole and peculiar velocities based on these studies have produced contradictory claims for the amplitude of the bulk flow and whether it is generated by internal or external mass fluctuations. With Shellflow, and further zero-point calibration of existing TF data sets, we expect a high-accuracy detection of the bulk flow amplitude and an unambiguous characterization of the tidal field at 6000 km/s. One of the key features of this study is not only its careful, all-sky sample selection but the independent duplication, by at least 2 of us, of all the data reductions. These reductions and a first flow analysis based on the Shellflow sample alone will be published in the Fall.

Affiliated with

Also associated with

No associations

Rating

SHELLFLOW: The First Homogeneous All-Sky TF Survey at 6000 km/s does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with SHELLFLOW: The First Homogeneous All-Sky TF Survey at 6000 km/s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SHELLFLOW: The First Homogeneous All-Sky TF Survey at 6000 km/s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-458064