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2MASS and the Nearby Universe

Published online by Cambridge University Press:  23 September 2016

John Huchra ,
Nathalie Martimbeau ,
Thomas Jarrett ,
Roc Cutri ,
Michael Skrutskie ,
Stephen Schneider ,
Rae Steining ,
Lucas Macri ,
Jeff Mader  and
Teddy George
John Huchra
Affiliation:
Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 USA
Nathalie Martimbeau
Affiliation:
Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 USA
Thomas Jarrett
Affiliation:
IPAC, Caltech, Pasadena, CA 91125
Roc Cutri
Affiliation:
IPAC, Caltech, Pasadena, CA 91125
Michael Skrutskie
Affiliation:
University of Virginia, Charlottesville, VA
Stephen Schneider
Affiliation:
University of Massachusetts, Amherst, MA
Rae Steining
Affiliation:
University of Massachusetts, Amherst, MA
Lucas Macri
Affiliation:
NOAO, Tucson, AZ
Jeff Mader
Affiliation:
Keck Observatory, Waimea, HI
Teddy George
Affiliation:
McDonald Observatory, Fort Davis, TX

Abstract

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The Two Micron All-Sky Survey was conceived over a decade ago for the express purpose of mapping the Milky Way and the Universe nearby. 2MASS is now complete and the final data products, including the extended source catalog (XSC), have been released. The XSC contains nearly a million galaxies to the stated completeness goal of K=13.5. While the catalog becomes incomplete at the faintest magnitudes and lowest galactic latitudes due to confusion, at the bright end the catalog is essentially complete down to very low latitudes (b less than 5 degrees), which makes it an excellent survey for the distribution of matter in the nearby Universe. Redshift information is now nearly complete for the 24,000 galaxies brighter than K=11.25 and above |b|=5°. We now have an amazing census of galaxy (baryonic mass) concentrations over the whole sky and inside z=0.04. Several new structures are elucidated and the characteristics of the structures are described. We also examine the match between the predicted gravitational velocity vector of the Local Group and the motions determined by other experiments including the CMB dipole.

Type
Session III: Local Structure
Information
Symposium - International Astronomical Union , Volume 216: Maps of the Cosmos , 2005 , pp. 170 - 179
Copyright
Copyright © Astronomical Society of the Pacific 2005 

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