Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 460, Issue 2, Pages 1758-1789Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stw1054
Keywords
galaxies: clusters: general; galaxies: elliptical and lenticular, cD
Categories
Funding
- European Research Council for Advanced Grant Program [339659-MUSICOS, 267399-Momentum]
- Science and Technology Facilities Council Advanced Fellowship [ST/H005234/1]
- Leverhume foundation
- Science and Technology Facilities Counci [ST/I001573/1]
- European Research Council
- Natural Sciences and Engineering Research Council of Canada
- Natural Sciences and Engineering Research Council through the discovery grant
- Canada Research Chair programs
- Fonds de recherche du Quebec - Nature et technologies
- STFC [ST/M000907/1, ST/J001414/1, ST/L005042/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/M000907/1, ST/J001414/1] Funding Source: researchfish
Ask authors/readers for more resources
We present an Integral Field Unit survey of 73 galaxy clusters and groups with the VIsible Multi Object Spectrograph on the Very Large Telescope. We exploit the data to determine the H alpha gas dynamics on kpc scales to study the feedback processes occurring within the dense cluster cores. We determine the kinematic state of the ionized gas and show that the majority of systems (similar to 2/3) have relatively ordered velocity fields on kpc scales that are similar to the kinematics of rotating discs and are decoupled from the stellar kinematics of the brightest cluster galaxy. The majority of the H alpha flux (> 50 per cent) is typically associated with these ordered kinematics and most systems show relatively simple morphologies suggesting they have not been disturbed by a recent merger or interaction. Approximately 20 per cent of the sample (13/73) have disturbed morphologies which can typically be attributed to active galactic nuclei activity disrupting the gas. Only one system shows any evidence of an interaction with another cluster member. A spectral analysis of the gas suggests that the ionization of the gas within cluster cores is dominated by non-stellar processes, possibly originating from the intracluster medium itself.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available