SIMBAD references

2002ApJ...569..134M - Astrophys. J., 569, 134-143 (2002/April-2)

Constraints on cool gas in rich clusters of galaxies.


Abstract (from CDS):

Cool gas should be present in galaxy clusters due to stripping of galactic gas, in-fall onto the cluster, and from cooling flows. We have searched for this gas through metal resonance absorption lines from low-ionization gas toward six background quasars. Both cooling-flow and non-cooling-flow clusters were observed, with lines of sight ranging from the inner to outer parts of the cluster (0.32Mpc≤rproj≤1.40Mpc). The HST Faint Object Spectrograph observations failed to detect Fe II or Mg II absorption at the cluster redshift, with 1 σ upper limits on the ion column densities of N≤1012-1013 cm–2. From existing X-ray data, we estimate that ram-pressure stripping of galactic gas by the intracluster medium should produce cool gas along these sight lines. The failure to detect absorption lines implies that any gas stripped in such a way has a low covering fraction, possibly due to a short lifetime in this low-ionization state.

Abstract Copyright:

Journal keyword(s): Galaxies: Clusters: General - Galaxies: Quasars: Absorption Lines

CDS comments: Table 1 : QSOs 0107-156, 1124+271 and 1258+285 have a format with 1950 coordinates. Others QSO are '[KB98]', they have a format with 2000 coordinates.

Simbad objects: 16

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