Constraining Cold Accretion onto the Most Massive Black Holes
Abstract
We present the results of 23 ALMA CO(1-0) observations of strong, core dominated mm-continuum sources known to reside in BCGs. With this CO absorption sample, which significantly expands on that of (David et al., 2014) and (Tremblay et al., 2016), we are able to compare the observed distribution of cold molecular clouds to the predictions of various simulations e.g. (Gaspari et al., 2015-2017). When complemented with velocity offsets, line widths, and pre-existing HI observations, the detection of these absorption lines provides new insights into the behaviour and radial distributions of cold molecular gas clouds. This larger sample allows us to probe many different lines of sight and prevents sources which have edge-on gas disks, such as Hydra-A, skewing our interpretations. Our new observations also provide maps of extended CO(1-0) emission, which when combined with IFU data, allow us to map regions of ionised gas directly to our CO(1-0) emission.
- Publication:
-
Multiphase AGN Feeding & Feedback; Linking the Micro to Macro Scales in Galaxies
- Pub Date:
- July 2018
- Bibcode:
- 2018maff.confE..50R