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Spatially resolved molecular gas conditions in the circumnuclear disc of 3C 84
Bin Jia, Tom Oosterloo, Serena Viti +1
The brightest cluster galaxy NGC 1275, at the centre of the Perseus cluster, hosts the radio-loud AGN 3C 84 and a circumnuclear disc (CND) of cold molecular gas onto which large-sc…
HI Galaxy Science with the SKA
Jing Wang, D. J. Pisano, Sarah Blyth +9
This chapter introduces the contributions of the HI galaxy science in this volume reviewing the latest developments and urgent questions in HI galaxy science, providing guiding pri…
HI absorption in MHONGOOSE -- Spin temperatures and cold neutral medium in nearby disk galaxies
W. J. G. de Blok, F. M. Maccagni, L. Chemin +7
Combined HI emission-absorption studies constrain the spin temperature and phase structure of the neutral atomic hydrogen interstellar medium (ISM), but have largely been limited t…
A deep MeerKAT view of associated HI absorption in radio AGNs at intermediate redshift: Role of absorber geometry and conditions of the gas
Raffaella Morganti, Tom Oosterloo, Clive Tadhunter +1
We present MeerKAT observations searching for HI absorption in a sample of 17 powerful ( W Hz) radio sources at intermediate redshifts (…
Not so-dark: High resolution HI imaging of J0139+4328 and identification of an optical counterpart
Barbara Šiljeg, Elizabeth A. K. Adams, Tom A. Oosterloo +4
Dark galaxies - systems rich in neutral hydrogen (HI) gas but with no stars - are a common prediction of numerous theoretical models and cosmological simulations. However, the uneq…
The inside-out quenching of the MHONGOOSE galaxy NGC 1371
S. Veronese, W. J. G. de Blok, F. Fraternali +5
We present the deepest 21-cm spectral line and 1.4 GHz broad-band continuum observations of nearby early-type spiral galaxy NGC 1371 as part of the MeerKAT HI Observations of Nearb…
Chandra X-ray Observatory study of the X-ray emission of PKS 0023-26 and comparison with recent ALMA results
A. Siemiginowska, R. Morganti, G. Fabbiano +4
We present a deep high-resolution Chandra X-ray Observatory image data of a powerful compact radio source PKS 0023-26 associated with a quasar at redshift 0.322. The earlier studie…
The changing impact of radio jets as they evolve: The view from the cold gas
Tom Oosterloo, Raffaella Morganti, Clive Tadhunter +3
We present ALMA CO(1-0) and CO(3-2) observations of a powerful young radio galaxy, PKS 0023-26, hosted by a far-infrared bright galaxy. The galaxy has a luminous optical AGN and a…
Outflowing shocked gas dominates the NIR H emission from the dual AGN NGC6240
J. Carlsen, C. Cicone, B. Hagedorn +10
[Abridged] We present a multi-line study of the kinematics of the molecular and ionised gas phases in the central 2 kpc of NGC6240, based on JWST/NIRSpec and ALMA observations. We…
Spectral indices in active galactic nuclei as seen by Apertif and LOFAR
A. M. Kutkin, R. Morganti, T. A. Oosterloo +5
We present two new radio continuum images obtained with Apertif at 1.4 GHz. The images, produced with a direction-dependent calibration pipeline, cover 136 square degrees of the Lo…
New constraints on the evolution of the MHI-M* scaling relation combining CHILES and MIGHTEE-HI data
Alessandro Bianchetti, Francesco Sinigaglia, Giulia Rodighiero +23
The improved sensitivity of interferometric facilities to the 21-cm line of atomic hydrogen (HI) enables studies of its properties in galaxies beyond the local Universe. In this wo…
HI within and around observed and simulated galaxy discs -- Comparing MeerKAT observations with mock data from TNG50 and FIRE-2
A. Marasco, W. J. G. de Blok, F. M. Maccagni +12
Atomic hydrogen (HI) is an ideal tracer of gas flows in and around galaxies, and it is uniquely observable in the nearby Universe. Here we make use of wide-field (~1 square degree)…
Cold gas bubble inflated by a low-luminosity radio jet
Suma Murthy, Raffaella Morganti, Tom Oosterloo +5
We present NOEMA CO(2-1) observations of a nearby, young, low-luminosity radio source, B2 0258+35. Our earlier CO(1-0) study had shown the presence of strong jet-ISM interaction an…
The First Large Absorption Survey in HI (FLASH): II. Pilot Survey data release and first results
Hyein Yoon, Elaine M. Sadler, Elizabeth K. Mahony +41
The First Large Absorption Survey in HI (FLASH) is a large-area radio survey for neutral hydrogen in the redshift range 0.4<z<1.0, using the 21cm HI absorption line as a probe of c…
An ALMA CO(1-0) survey of the 2Jy sample: large and massive molecular disks in radio AGN host galaxies
C. Tadhunter, T. Oosterloo, R. Morganti +4
The jets of radio AGN provide one of the most important forms of AGN feedback, yet considerable uncertainties remain about how they are triggered. Since the molecular gas reservoir…
The MeerKAT Fornax Survey. III. Ram-pressure stripping of the tidally interacting galaxy NGC 1427A in the Fornax cluster
P. Serra, T. A. Oosterloo, P. Kamphuis +16
We present MeerKAT Fornax Survey HI observations of NGC 1427A, a blue irregular galaxy with a stellar mass of 2e+9 Msun located near the centre of the Fornax galaxy cluster. Thanks…
Turbulent circumnuclear disc and cold gas outflow in the newborn radio source 4C 31.04
Suma Murthy, Raffaella Morganti, Tom Oosterloo +2
We present deep kpc- and pc-scale neutral atomic hydrogen (HI) absorption observations of a very young radio source (< 5000 yrs), 4C 31.04, using the WSRT and the Global VLBI array…
MHONGOOSE -- A MeerKAT Nearby Galaxy HI Survey
W. J. G. de Blok, J. Healy, F. M. Maccagni +57
The MHONGOOSE (MeerKAT HI Observations of Nearby Galactic Objects: Observing Southern Emitters) survey maps the distribution and kinematics of the neutral atomic hydrogen (HI) gas…
ALMA reveals a compact and massive molecular outflow driven by the young AGN in a nearby ULIRG
Luke R. Holden, Clive N. Tadhunter, Anelise Audibert +5
The ultra luminous infrared galaxy (ULIRG) F13451+1232 is an excellent example of a galaxy merger in the early stages of active galactic nucleus (AGN) activity, a phase in which AG…
Dark matter measurements combining stellar and HI kinematics: 30% outliers with low dark matter content at
Meng Yang, Ling Zhu, Yu Lei +5
We construct the Schwarzschild dynamical models for 11 early-type galaxies with the SAURON and Mitchell stellar IFUs out to , and construct dynamical models with…
LOFAR discovery and wide-band characterisation of an ultra-steep spectrum AGN radio remnant associated with Abell 1318
A. Shulevski, M. Brienza, F. Massaro +15
We present the discovery of a very extended (550 kpc) and low-surface-brightness ( at 144 MHz) radio emission region in Abell 1318. These propert…
Closing the feedback-feeding loop of the radio galaxy 3C 84
Tom Oosterloo, Raffaella Morganti, Suma Murthy
Gas accretion by a galaxy's central super massive black hole (SMBH) and the resultant energetic feedback by the accreting active galactic nucleus (AGN) on the gas in and around a g…
Cold gas in the heart of Perseus A
Raffaella Morganti, Suma Murthy, Tom Oosterloo +6
We present new JVLA and VLBA observations tracing the HI in the central region of 3C84 (Perseus A). This radio source is hosted by the bright cluster galaxy NGC 1275 in the centre…
The MeerKAT Fornax Survey II. The rapid removal of HI from dwarf galaxies in the Fornax cluster
D. Kleiner, P. Serra, F. M. Maccagni +12
We present MeerKAT Fornax Survey atomic hydrogen (HI) observations of the dwarf galaxies located in the central ~2.5 x 4 deg of the Fornax galaxy cluster. The HI images present…