The 2M++ galaxy redshift catalogue

By G. Lavaux, Michael J. Hudson University of Illinois at Urbana-Champaign, J. University, U. Waterloo, Perimeter Institute, I. D. Paris. 2011

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Peculiar velocities arise from gravitational instability, and thus are linked to the surrounding distribution of matter. In order to understand the motion of the Local Group with respect to the cosmic microwave background, a deep all-sky map of the galaxy distribution is required. Here we present a new redshift compilation of 69 160 galaxies, dubbed 2M++, to map large-scale structures of the local Universe over nearly the whole sky, and reaching depths of K≤ 12.5, or 200 h−1 Mpc. The target catalogue is based on the Two-Micron All-Sky Survey Extended Source Catalog (2MASS-XSC). The primary sources of redshifts are the 2MASS Redshift Survey, the 6dF galaxy redshift survey and the Sloan Digital Sky Survey (Data Release 7). We assess redshift completeness in each region and compute the weights required to correct for redshift incompleteness and apparent magnitude limits, and discuss corrections for incompleteness in the zone of avoidance. We present the density field for this survey, and discuss the importance of large-scale structures such as the Shapley Concentration.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/7b98c10f51a6e58840e3bdcef101e21f1270667d

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Citations in the corpus

The SAGA Survey. I. Satellite Galaxy Populations around Eight Milky Way Analogs (2017, background): “…large-scale environment, we impose an isolation criterion on our analog hosts such that there are no galaxies brighter than MK + 1 within one degree of the host, and such that the host is not within 2 virial radii of a massive (5× 1012 M ) galaxy in the 2MASS group catalog (Lavaux & Hudson 2011).”
Cosmic flows in the nearby universe from Type Ia supernovae (2011, methodology): “Lavaux & Hudson (2011), using the 6-degree Field Galaxy Survey (Jones et al. 2009) of 2MASS-selected galaxies, showed that the Shapley and Horologium-Reticulum superclusters generate significantly more peculiar velocity than predicted by the PSCz, even allowing for a different β for 2MASS galaxies.”
COSMICFLOWS-2: THE DATA (2013, methodology): “Col. 22: 2M++ group ID (Lavaux & Hudson 2011); alternate group identification.”
A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km s−1 Mpc−1 Uncertainty from the Hubble Space Telescope and the SH0ES Team (2021, methodology): “The latter are provided by constrained realizations of the peculiar-velocity field by Carrick et al. (2015), Said et al. (2020), and Lilow & Nusser (2021) based on 2M++ (Lavaux & Hudson 2011) and 2MRS (Huchra et al. 2012; Macri et al. 2019), respectively.”
The Hubble Constant from Infrared Surface Brightness Fluctuation Distances (2021, methodology): “The second flow model is that of Carrick et al. (2015), based on the density field reconstructed from the 2M++ redshift compilation (Lavaux & Hudson 2011), which combines the 2MRS with deeper redshift surveys over large fractions of the sky.”
TWO MICRON ALL SKY SURVEY PHOTOMETRIC REDSHIFT CATALOG: A COMPREHENSIVE THREE-DIMENSIONAL CENSUS OF THE WHOLE SKY (2013, methodology): “In a study related to the discussion in this Subsection, Lavaux & Hudson (2011) presented the situation as it was in mid-2011, by compiling what they dubbed the 2M++ catalog, which included 69,160 2MASS-selected galaxies, reaching depths up to Ks ≤ 12.5 (although the effective depth varied on the sk”
Cosmological parameters from the comparison of peculiar velocities with predictions from the 2M++ density field (2014, methodology): “Following a prescription described in Lavaux & Hudson (2011), magnitudes were then corrected for Galactic extinction, cosmological surface brightness dimming and stellar evolution.”
The Megamaser Cosmology Project. XIII. Combined Hubble Constant Constraints (2020, methodology): “We note that not all of these group associations are equally certain, and that in particular the large peculiar velocity predicted for CGCG 074-064 (which was not associated with a galaxy group by Lavaux & Hudson 2011) may indicate that it warrants further investigation.”
Galaxy Groups Within 3500 km s−1 (2017, methodology): “Cross references with the “2MRS1175 North/South Groups” catalogs provide links with 2MASS-based group studies (Crook et al. 2007; Lavaux & Hudson 2011; Tully 2015b).”
Measuring Dark Energy Properties with Photometrically Classified Pan-STARRS Supernovae. II. Cosmological Parameters (2017, methodology): “We correct for peculiar veloci- 15 ties using the nearby galaxy density field measured by the 2M++ catalog from 2MASS (Lavaux & Hudson 2011).”