115 citations · 820 across the 29 of their papers we have counts for
14 papers · 1 filter
Investigating the effects of fresh gas on the Active Galactic Nuclei luminosity of early- and late-type galaxies
Martyna W. Winiarska, Sandra I. Raimundo, Timothy A. Davis +3
The main fuelling processes for Active Galactic Nuclei (AGN) are currently unknown. Previous work showed that galaxies with a large kinematic misalignment between their stellar and…
Mapping the Active Galactic Nucleus Effects on the Stellar and Gas Properties of NGC 5806
Sophie L. Robbins, Sandra I. Raimundo, Matthew A. Malkan
It is commonly accepted that active galactic nuclei (AGN) have a strong impact upon the evolution of their host galaxies, but the processes by which they do so are not fully unders…
Probing the roles of orientation and multi-scale gas distributions in shaping the obscuration of Active Galactic Nuclei through cosmic time
Alba V. Alonso-Tetilla, Francesco Shankar, Fabio Fontanot +14
The origin of obscuration in Active Galactic Nuclei (AGN) is still an open debate. In particular, it is unclear what drives the relative contributions to the line-of-sight column d…
An increase in black hole activity in galaxies with kinematically misaligned gas
Sandra I. Raimundo, Matthew Malkan, Marianne Vestergaard
External accretion events such as a galaxy merger or the accretion of gas from the immediate environment of a galaxy, can create a large misalignment between the gas and the stella…
External gas accretion provides a fresh gas supply to the active S0 galaxy NGC 5077
Sandra I. Raimundo
In early type galaxies, externally accreted gas is thought to be the main source of gas replenishment at late times. We use MUSE integral field spectroscopy data to study the activ…
Dynamical friction-driven orbital circularisation in rotating discs: a semi-analytical description
Matteo Bonetti, Elisa Bortolas, Alessandro Lupi +2
We present and validate a novel semi-analytical approach to study the effect of dynamical friction on the orbits of massive perturbers in rotating stellar discs. We find that dynam…
Modelling the AGN broad line region using single-epoch spectra II. Nearby AGN
S. I. Raimundo, M. Vestergaard, M. R. Goad +4
The structure of the broad line region (BLR) is an essential ingredient in the determination of active galactic nuclei (AGN) virial black hole masses, which in turn are important t…
Modelling the AGN broad line region using single-epoch spectra I. The test case of Arp 151
S. I. Raimundo, A. Pancoast, M. Vestergaard +2
We show that individual (single-epoch) spectra of AGN can constrain some of the geometry and dynamics of the AGN broad line region. Studies of the cosmic influence of supermassive…
A nuclear molecular outflow in the Seyfert galaxy NGC3227
A. Alonso-Herrero, S. Garcia-Burillo, M. Pereira-Santaella +24
We present ALMA observations of the CO(2-1) and CO(3-2) molecular gas transitions and associated (sub)-mm continua of the nearby Seyfert 1.5 galaxy NGC3227 with angular resolutions…
MUSE observations of a changing-look AGN I: The re-appearance of the broad emission lines
S. I. Raimundo, M. Vestergaard, J. Y. Koay +3
Optical changing-look Active Galactic Nuclei (AGN) are a class of sources that change type within a short timescale of years or decades. This change is characterised by the appeara…
A catalog of optical to X-ray spectral energy distributions of z~2 quasars observed with Swift. I: First results
Daniel Lawther, Marianne Vestergaard, Sandra Raimundo +1
We present the Swift optical to X-ray spectral energy distributions (SEDs) of 44 quasars at redshifts z~2 observed by Swift, part of a larger program to establish and characterize…
Tracing the origin of the AGN fuelling reservoir in MCG--6-30-15
S. I. Raimundo, R. I. Davies, R. E. A. Canning +3
The active galaxy MCG--6-30-15 has a 400 pc diameter stellar kinematically distinct core, counter-rotating with respect to the main body of the galaxy. Our previous high spatial re…
The Coevolution of Supermassive Black Holes and Massive Galaxies at High Redshift
A. Lapi, S. Raimundo, R. Aversa +5
We exploit the recent, wide samples of far-infrared (FIR) selected galaxies followed-up in X rays and of X-ray/optically selected active galactic nuclei (AGNs) followed-up in the F…
Eddington ratio and accretion efficiency in AGN evolution
S. I. Raimundo, A. C. Fabian
The cosmological evolution of Active Galactic Nuclei (AGN) is important for understanding the mechanism of accretion onto supermassive black holes, and the related evolution of the…