scholarly journals The 2MASS Redshift Survey in the Zone of Avoidance

2019 ◽  
Vol 245 (1) ◽  
pp. 6 ◽  
Author(s):  
Lucas M. Macri ◽  
Renée C. Kraan-Korteweg ◽  
Trystan Lambert ◽  
María Victoria Alonso ◽  
Perry Berlind ◽  
...  
Keyword(s):  
Redshift Survey ◽  
Zone Of Avoidance

scholarly journals An Obscured Galaxy Redshift Survey with FLAIR

1997 ◽  
Vol 14 (1) ◽  
pp. 126-126 ◽  
Author(s):  
K. Wakamatsu ◽  
M. Malkan ◽  
Q. A. Parker ◽  
H. Karoji
Keyword(s):  
Large Scale ◽  
Wall Structure ◽  
Galactic Centre ◽  
Large Scale Structures ◽  
Sky Survey ◽  
Centre Region ◽  
Redshift Survey ◽  
Galaxy Redshift ◽  
Scale Structures ◽  
Zone Of Avoidance

A problem for studies of large scale structures in nearby space (cz < 10,000 km s-1) is the presence of the Zone of Avoidance which is so large and wide on the sky that potentially important clusters and voids remain undetected. A prime example was the Ophiuchus cluster discovered by Wakamatsu and Malkan (1981) as a heavily obscured cD cluster close to the Galactic centre region (l = 0·5°, b = +9·5°). It is the second brightest X-ray cluster after Perseus. A hidden galaxy survey was performed by visually searching ESO/SERC Sky Survey (R and J) copy films of the region centred at l = 355°, b = +10° finding more than 4000 galaxies in six fields. Several irregular clusters adjacent to Ophiuchus were found forming a supercluster which may be connected to the Hercules supercluster by a wall structure parallel to the local supergalactic plane (Wakamatsu et al. 1994). In front of this supercluster, an 'Ophiuchus Void' is suggested (cz = 4,500 km s-1). The Ophiuchus supercluster at cz = 8,500 km s-1 is similar to the Hercules supercluster (cz = 11,000 km s-1), and extends north toward the latter supercluster.

scholarly journals The 2MASS redshift survey galaxy group catalogue derived from a graph-theory based friends-of-friends algorithm

2020 ◽  
Vol 497 (3) ◽  
pp. 2954-2973
Author(s):  
Trystan S Lambert ◽  
R C Kraan-Korteweg ◽  
T H Jarrett ◽  
L M Macri
Keyword(s):  
Virtual Reality ◽  
Graph Theory ◽  
Additional Data ◽  
Velocity Dispersion ◽  
New Method ◽  
Line Of Sight ◽  
The Galaxy ◽  
Redshift Survey ◽  
Zone Of Avoidance ◽  
Visualization Techniques

ABSTRACT We present the galaxy group catalogue for the recently completed 2MASS Redshift Survey (2MRS; Macri et al. 2019) which consists of 44 572 redshifts, including 1041 new measurements for galaxies mostly located within the Zone of Avoidance. The galaxy group catalogue is generated by using a novel, graph-theory based, modified version of the friends-of-friends algorithm. Several graph-theory examples are presented throughout this paper, including a new method for identifying substructures within groups. The results and graph-theory methods have been thoroughly interrogated against previous 2MRS group catalogues and a Theoretical Astrophysical Observatory (TAO) mock by making use of cutting-edge visualization techniques including immersive facilities, a digital planetarium, and virtual reality. This has resulted in a stable and robust catalogue with on-sky positions and line-of-sight distances within 0.5 and 2 Mpc, respectively, and has recovered all major groups and clusters. The final catalogue consists of 3022 groups, resulting in the most complete ‘whole-sky’ galaxy group catalogue to date. We determine the 3D positions of these groups, as well as their luminosity and comoving distances, observed and corrected number of members, richness metric, velocity dispersion, and estimates of R200 and M200. We present three additional data products, i.e. the 2MRS galaxies found in groups, a catalogue of subgroups, and a catalogue of 687 new group candidates with no counterparts in previous 2MRS-based analyses.

scholarly journals A REDSHIFT SURVEY OF THE STRONG-LENSING CLUSTER ABELL 383

2014 ◽  
Vol 783 (1) ◽  
pp. 52 ◽  
Author(s):  
Margaret J. Geller ◽  
Ho Seong Hwang ◽  
Antonaldo Diaferio ◽  
Michael J. Kurtz ◽  
Dan Coe ◽  
...  
Keyword(s):  
Strong Lensing ◽  
Redshift Survey

scholarly journals THE DEEP2 GALAXY REDSHIFT SURVEY: THE VORONOI-DELAUNAY METHOD CATALOG OF GALAXY GROUPS

2012 ◽  
Vol 751 (1) ◽  
pp. 50 ◽  
Author(s):  
Brian F. Gerke ◽  
Jeffrey A. Newman ◽  
Marc Davis ◽  
Alison L. Coil ◽  
Michael C. Cooper ◽  
...  
Keyword(s):  
Galaxy Groups ◽  
Redshift Survey ◽  
Galaxy Redshift ◽  
Deep2 Galaxy Redshift Survey

scholarly journals A faint galaxy redshift survey to B=24

1995 ◽  
Vol 273 (1) ◽  
pp. 157-168 ◽  
Author(s):  
K. Glazebrook ◽  
R. Ellis ◽  
M. Colless ◽  
T. Broadhurst ◽  
J. Allington-Smith ◽  
...  
Keyword(s):  
Faint Galaxy ◽  
Redshift Survey ◽  
Galaxy Redshift

scholarly journals Reconstructed density and velocity fields from the 2MASS Redshift Survey

2006 ◽  
Vol 373 (1) ◽  
pp. 45-64 ◽  
Author(s):  
P. Erdogdu ◽  
O. Lahav ◽  
J. P. Huchra ◽  
M. Colless ◽  
R. M. Cutri ◽  
...  
Keyword(s):  
Velocity Fields ◽  
Redshift Survey

scholarly journals UBVRI photometry of the Durham-AAT redshift survey

1998 ◽  
Vol 294 (1) ◽  
pp. 147-164 ◽  
Author(s):  
N. Metcalfe ◽  
A. Ratcliffe ◽  
T. Shanks ◽  
R. Fong
Keyword(s):  
Ubvri Photometry ◽  
Redshift Survey

scholarly journals The radio-loud/radio-quiet dichotomy: news from the 2dF QSO Redshift Survey

2003 ◽  
Vol 341 (3) ◽  
pp. 993-1004 ◽  
Author(s):  
M. Cirasuolo ◽  
M. Magliocchetti ◽  
A. Celotti ◽  
L. Danese
Keyword(s):  
Redshift Survey

scholarly journals The VIMOS Public Extragalactic Redshift Survey (VIPERS)

2014 ◽  
Vol 566 ◽  
pp. A108 ◽  
Author(s):  
L. Guzzo ◽  
M. Scodeggio ◽  
B. Garilli ◽  
B. R. Granett ◽  
A. Fritz ◽  
...  
Keyword(s):  
Redshift Survey
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