Large Scale Structure in the Local Universe T. Jarrett (IPAC/Caltech) updated: Aug 03, 2011

*** IN MEMORIAM: Tony Fairall ***

The 2MASS XSCz is an allsky near-infrared galaxy catalog that is derived from the 2MASS Extended Source Catalog (XSC), with redshifts that have either been spectroscopically (e.g., SDSS, 6dFGS, 2dF, Zcat) measured or derived from the 2MASS photometric measurements. The 1 million or so galaxies that comprise the XSCz extends to a redshift of z=0.2 (K < 14th mag) for luminous galaxies, but is most complete at the bright end (K < 12th mag) where accurate radial velocities are included for most galaxies. The following images show aitoff (equal-area) projections of the local universe as viewed in the Galactic Coordinated System (Milky Way at center).

Composite views of the Local Universe

5 arcmin resolution	moderate surface smoothing	heavy surface smoothing	B/W
click here for high resolution, click here for constellations; click here for a finder chart.	click here for high resolution; click here for constellations; click here for a finder chart.	click here for high resolution, click here for constellations; click here for a finder chart.	click here for high resolution, click here for constellations; click here for a finder chart.

Redshift layers

z = 0	2MASS PSC view of the Milky Way, including constellation boundaries; click here for high resolution.
redshift range	moderate surface smoothing	heavy surface smoothing	B/W, moderate surface smoothing	B/W, heavy surface smoothing
0 < z < 0.01	click here for high resolution.	click here for high resolution.	click here for high resolution.	click here for high resolution.
0.01 < z < 0.02	click here for high resolution.	click here for high resolution.	click here for high resolution.	click here for high resolution.
0.02 < z < 0.03	click here for high resolution.	click here for high resolution.	click here for high resolution.	click here for high resolution.
0.03 < z < 0.04	click here for high resolution.	click here for high resolution.	click here for high resolution.	click here for high resolution.
0.04 < z < 0.05	click here for high resolution.	click here for high resolution.	click here for high resolution.	click here for high resolution.
0.05 < z < 0.06	click here for high resolution.	click here for high resolution.	click here for high resolution.	click here for high resolution.
0.06 < z < 0.07	click here for high resolution.	click here for high resolution.	click here for high resolution.	click here for high resolution.
0.07 < z < 0.08	click here for high resolution.	click here for high resolution.	click here for high resolution.	click here for high resolution.
0.08 < z < 0.09	click here for high resolution.	click here for high resolution.	click here for high resolution.	click here for high resolution.
z > 0.09	click here for high resolution.	click here for high resolution.	click here for high resolution.	click here for high resolution.

Key Spectral Redshift Catalogs

Tully matches with the 2MASS XSC; click here for high resolution.

ZCAT matches with the 2MASS XSC; click here for high resolution.

6dFGS matches with the 2MASS XSC; click here for high resolution.

SDSS matches with the 2MASS XSC; click here for high resolution.

NED matches with the 2MASS XSC; click here for high resolution.

2MRS matches with the 2MASS XSC; click here for high resolution.

Constellations projected in the Galactic System

click here for high resolution,

click here for high resolution, click here for a finder chart.

click here for high resolution, click here for a finder chart.

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Poster

Putting it altogether in a wall poster.

Finder Chart

Find your way around the local universe Click here for a high-resolution version.

Version with Color on white reversal. The data shows the Two Micron Redshift Survey. Click here for a high-resolution version.

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Statistics

• Source Distribution Statistics

Links

• The 2MASS Galaxy Catalog (Jarrett 2004)

• 2MASS XSCz movies: COBE, WMAP

• Discovery of Two Galaxies Deeply Embedded in the Great Attractor Wall

• The hidden HI-massive LIRG HIZOA J0836-43: Inside-out galaxy formation

• Reconstructed density and velocity fields from the 2MASS Redshift Survey

• 2MRS Density Reconstruction Movie

• Infrared Universe and Infrared Galaxies

• Chart of the Local Universe; this map shows the 2MASS galaxies labeled with familiar clusters and superclusters.

• 2MASS REDSHIFT SURVEY (John Huchra is the 2MASS galaxies soul man); see also the CfA REDSHIFT SURVEY

• 6dF Galaxy Survey (this project aims to map the southern hemisphere sky in redshift-space)

• 2dF Galaxy Redshift Survey (magnificent project headed by Matthew Colles & Co.)

• Las Campanas Redshift Survey (a major redshift survey)

• SDSS 3D Map of Universe (see the amazing SDSS redshift map of the local universe)

• Max Tegmark's SDSS page (more great LSS links can be found here; see also here)

• Atlas of the Universe (this is a great site for thinking about the scale of the universe; excellent diagrams of LSS)

• Allsky Images of the 2MASS XSC

• 2MASS Showcase (the best 2MASS images)

• NED (all galaxies, all the time)

• IRSA (get your infrared data here)

• LAMBDA (where the COBE and MAP CMB data live)

• WMAP Wilkinson Microwave Anisotropy Probe

• Cool Cosmos (learn about the infrared here)

• incredible simulations of the early universe, galaxy mergers and the future of the Milky Way. A must see!

• Axel Mellinger's visual panorama of the Milky Way (this is a beautiful look at the visual sky)

Special Acknowledgements

For many enlightening discussions, I'm very grateful to my colleagues: Joe Mazzarella, Harold Corwin, Barry Madore (NED), Will Saunders (AAO), Renee Kraan-Korteweg and Tony Fairall (UCT).

To the marvelous redshift surveys, including SDSS, ZCAT & 2MRS, 2dF & 6dFGS, LCRS, and of course, the RC3.

To the incredibly powerful databases, including the NASA Extragalactic Database (NED; see below) and Centre de Données astronomiques de Strasbourg (CDS; who provide the equatorial coordinates of the constellation boundaries).

This research has made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.