X-ray Emitting Groups in the Infall Region of Abell 2199

Details X-ray Emitting Groups in the Infall Region of Abell 2199 X-ray Emitting Groups in the Infall Region of Abell 2199

2001-02-07

arxiv.org/abs/astro-ph/0102108v1

Astrophys.J. 555 (2001) 558

Astronomy and Astrophysics

Astrophysics

11 pages, 2 figures, to appear in The Astrophysical Journal

Scientific paper

10.1086/321513

Using a large redshift survey covering 95 square degrees, we demonstrate that the infall region of Abell 2199 contains Abell 2197, one or two X-ray emitting groups, and up to five additional groups identified in redshift surveys. Our survey shows that the X-ray emitting systems, located at projected radii of $1.^\circ4, 1.^\circ9$, and $5.^\circ1$ (2.2, 3.1, and $8.0 h^{-1}$Mpc), are connected kinematically to A2199. A2197 is itself an optically rich cluster; its weak X-ray emission suggests that it is much less massive than A2199. The absence of a sharp peak in the infall pattern at the position of A2197 supports this hypothesis. The outermost group is well outside the virial region of A2199 and it distorts the infall pattern in redshift space. The two X-ray emitting groups are roughly colinear, suggesting the existence of an extended ($8.0 h^{-1}$Mpc) filament. The identification of these infalling groups provides direct support of hierarchical structure formation; studies of these systems will provide insights into structure evolution. Groups in the infall regions of nearby clusters may offer a unique probe of the physics of the warm/hot ionized medium (WHIM) which is difficult to observe directly with current instruments.

Affiliated with

Also associated with

No associations

Rating

X-ray Emitting Groups in the Infall Region of Abell 2199 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with X-ray Emitting Groups in the Infall Region of Abell 2199, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-ray Emitting Groups in the Infall Region of Abell 2199 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-461282