A2626 and Friends: Large- and Small-scale Structure

被引：4
|
作者：
Healy, J. [1 ,2 ]
Willner, S. P. [3 ]
Verheijen, M. A. W. [1 ]
Blyth, S-L [2 ]
机构：
[1] Univ Groningen, Kapteyn Astron Inst, Landleven 12, NL-9747 AV Groningen, Netherlands
[2] Univ Cape Town, Dept Astron, Private Bag X3, ZA-7701 Rondebosch, South Africa
[3] Ctr Astrophys Harvard & Smithsonian, 60 Garden St, Cambridge, MA 02138 USA
来源：
ASTRONOMICAL JOURNAL | 2021年 / 162卷 / 05期
关键词：
GALAXY-CLUSTER-SURVEY; STAR-FORMATION; RICH CLUSTERS; X-RAY; VELOCITY DISPERSIONS; LUMINOSITY FUNCTION; REDSHIFT SURVEY; ABELL; WINGS; SUBSTRUCTURE;
D O I：
10.3847/1538-3881/ac0bc6
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
New MMT/Hectospec spectroscopy centered on the galaxy cluster A2626 and covering a similar to 1.8 deg(2) area out to z similar to 0.46 more than doubles the number of galaxy redshifts in this region. The spectra confirm four clusters previously identified photometrically. A2625, which was previously thought to be a close neighbor of A2626, is in fact much more distant. The new data show six substructures associated with A2626 and five more associated with A2637. There is also a highly collimated collection of galaxies and galaxy groups between A2626 and A2637 having at least three and probably four substructures. At larger scales, the A2626-A2637 complex is not connected to the Pegasus-Perseus filament.
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收藏
页数：17
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