Programme

The PHISCC workshop will be held from the morning of Sep 22 to the afternoon of Sep 24, 2025. Breakout sessions will follow from the morning of Sep 25 to the afternoon of Sep 26.

Workshop sessions (22 - 24 Sep 2025)

We will use a single laptop for all talks. Please upload your talk to the workshop GDrive folder (link circulated via email), if possible one hour before the start of your session.

Talks length:

Regular talks: 13' + 2' for questions
Joint talks with 2 speakers: 16' + 4' for questions
Joint talks with 3 speakers: 24' + 6' for questions

MONDAY 22 SEP

09.00 Registration09.30 Welcome
Session 1: HI results on gas accretion and star formation in the context of a multi-phase ISM and CGM
chair: Lelli09.50 de Blok 15' The Complete MHONGOOSE10.05 Kleiner 15' Emerging Trends in Diffuse HI of Nearby Star-Forming Galaxies10.20 Wang + Yang + Lin 30' FEASTS: HI Distribution at the 10^18 cm^-2 Level
10.50 coffee
11.40 Marasco 15' HI within and around observed and simulated galaxy discs - Comparing MeerKAT observations with mock data from TNG50 and FIRE-211.55 Katz 15' Galaxy Formation Simulations of the HI Content of Galaxies: A Better Approach12.10 Di Teodoro + Afruni 20' Tracing the cold nuclear outflow of the Milky Way using HI data12.30 Westmeier + Lee + O'Beirne 30' The WALLABY Survey – Scaling Relations and Almost Dark Galaxies
13.00 lunch
chair: Adams14.30 Roychowdhury 15' Tracing how HI fuels star formation through the Kennicutt-Schmidt relation - beyond the local Universe using SKA precursors14.45 Stockenstroom 15' The star formation histories of LADUMA galaxies15.00 Yu, N 15' The Cold Gas Conversion and Ionization States in Galaxy Mergers15.15 Buckland-Willis 15' Uncovering the CNM distribution in the Small Magellanic Cloud with the GASKAP survey15.30 Gupta 15' The MeerKAT Absorption Line Survey (MALS): cold atomic gas associated with normal and active galaxies at 0<z<1.8
15.45 coffee
Session 2: AGN feeding and feedback
16.30 Mahony 15' The ASKAP-FLASH survey: Progress update and first results16.45 Kerrison 15' FLASHy galaxies in cosmological simulations17.00 Kim, J 15' Externally Driven Gas Accretion and AGN Activity: Insights from HI Imaging of Local Hosts17.15 Maccagni 15' Following the MAGNHIFFIC spoor of AGN feeding and feedback
17.30 end of day

TUESDAY 23 SEP

Session 3: Interaction between galaxies and the surrounding environment
chair: Lee-Waddell09.30 Oman 15' HI science with the Colibre galaxy formation simulations09.45 Verheijen 15' HIperEDGE : an HI perspective on Environment-Driven Galaxy Evolution10.00 Staveley-Smith 15' Rapid evolution of galaxies before cluster infall10.15 Perron-Cormier 15' ASymba: Comparing HI in Observations and Simulations
10.30 coffee
11.15 Hank 15' Exploring the environmental dependence of HI asymmetries in resolved LADUMA detections11.30 Boselli 15' The ViCTORIA project: first results from the HI survey of the Virgo cluster with MeerKAT11.45 Rajohnson + Loni 20' From the classification of gas stripping stages to the origin of the truncated HIMF in Fornax cluster galaxies12.05 Chawla 15' Studying the effect of Fornax like cluster environments on its galaxies using TNG50 and iDaVIE12.20 Salinas 15' Exploring the neutral gas of galaxies in the Antlia cluster with MeerKAT
12.35 lunch
chair: Kleiner14.00 Ramatsoku 15' Resolving the Physical Processes Driving HI Deficiency in the Virgo III Filament14.15 Mogotsi 15' Resolved studies of the HI and galaxy interactions in nearby MeerChoirs groups14.30 Sorgho + Ianjamasimanana 20' Probing the large-scale environments of Hickson Compact Groups with MeerKAT14.50 Arabsalmani 15' Black pearls on strings: dark gas clouds in strikingly straight and narrow cosmic filaments15.05 Jung 15' Spinning HI galaxies in a 15 Mpc-long rotating cosmic filament at redshift 0.03
15.20 coffee
16.05 Davis 15' Unraveling the puzzle of "super-thin" spiral galaxies with MeerKAT and ALMA16.20 Glowacki 15' The first large sample of HI observations of FRB hosts, and the hundreds of discoveries lurking nearby16.35 Meyer 15' HI scaling relations from DINGO16.50 Guimarães-Silva 15' The HI view of dwarf galaxies in the Local Void: a pilot survey with WALLABY DR117.05 Hess + Adams 20' The Apertif surveys, from source-finding to science: A dwarf galaxy perspective
17.25 end of day

WEDNESDAY 24 SEP

Session 4: Galaxy dynamics
chair: Marasco10.00 Baes 15' Simulating the multi-wavelength Tully-Fisher relation for cosmological simulations10.15 Kim, S 15' The baryonic Tully-Fisher relation from WALLABY10.30 Oppor 15' Refining the Tully-Fisher Relation: A Multi-Wavelength Analysis of Galaxy Rotation Curves
10.45 coffee
11.30 Lelli 15' The baryonic mass-size relation of galaxies: linking HI and stellar distributions11.45 Faria 15' Measuring the Kinematics of HI-Rich Ultra-Diffuse Galaxies12.00 Deg 15' Strength in numbers: the population of gas-rich disk galaxies uncovered by WALLABY12.15 Kurapati + Zabel 20' Uncovering the dynamics of HI in nearby galaxies with MHONGOOSE
12.35 lunch
chair: Arabsalmani14.00 Simango 15' Resolved Kinematics and Mass Model of NGC 4514.15 Varasteanu 15' Radial acceleration relation with resolved stellar mass measurements over 1 Gyr14.30 Haubner 15' BIG-SPARC: Galaxy dynamics with statistical HI samples in the SKA era

Session 5: The evolution of the HI properties of galaxies with redshift
14.45 Baker / Blyth + Mohapatra 20' A scientific and technical update on the LADUMA deep HI survey15.05 Hoosain + Featherstone 20' Stacking Up the Universe: The Quest for Cosmic HI Density and Gas Depletion Timescales
15.25 coffee
16.10 Keenan 15' Background HI Galaxies in the MHONGOOSE Survey16.25 Arlow 15' The evolution of Luminous Compact Blue Galaxies16.40 Jarvis 15' MIGHTEE-HI and the detection of HI to z~0.416.55 Kanekar 15' The HI properties of galaxies at cosmic noon
17.10 Hess + Spekkens 20' Summary17.30 end of workshop

Posters (22 - 24 Sep 2025)

If you would like to bring a poster (either because your abstract was not selected for a talk or because you had not submitted an abstract initially) please let us know by sending an email to phiscc2025.oaca@inaf.it .

Posters will be on display during the entire workshop (Monday to Wednesday) in an room adjacent to the coffee and lunch break area. If provided, electronic posters will be attached to the program.

Bisigello SPRITZ+HI: pouring neutral hydrogen into the simulated sky cocktailFirth The Gas Tails of the Fornax ClusterGwebushe Galaxy evolution in the diverse environment of the Shapley Supercluster through HI observations.Huang On the Single-peaked HI Spectral Shape of Low Redshift Post-starburst GalaxiesIgnesti A MerKAT study of GASP jellyfish galaxiesLucero Using Gas-rich early type galaxies to test empirical and theoretical models of molecule formationManamela Exploring the high-redshift OH Universe with MeerKATMatthew Unveiling HI in the Cosmic Web at intermediate redshift with LADUMAMophahlane First HI MGCLS Data ReleaseRamburuth-Hurt Exploring metallicity variations in the Milky Way with UV-radio synergiesRugel THOR-GC: Characterizing the interstellar medium towards the Galactic CenterSarkar WNM and CNM Identification in GARCIA Galaxies Using The Gaussian Mix- ture Model (GMM), an Unsupervised Machine Learning MethodScannell The Strange HI Morphology and Kinematics of MHONGOOSE Galaxy UGCA319Yu, Q Tracing Cold Gas Evolution in Major-merger Pairs and Compact Groups

Breakout sessions (25 - 26 Sep 2025)

Source Finding (chair: Kamphuis) - 25 Sep, 09.00-13.00 - Zoom link - open breakout session 09.00 Kamphuis Welcome and opening 09.10 Westmeier Source Finding in WALLABY 09.30 Hess Source Finding in Apertif 09.50 Glowacki Source Finding in LADUMA / MIGHTEE / FLASH 10.10 Maksymowicz-Maciata Investigating source-finding strategies for HI surveys 10.30 break 11.00 Wong Exploring ML-aided source finding in ASKAP HI Surveys 11.20 Anthore Source Finding in MeerKAT/LADUMA data with the help of artificial neural networks 11.40 Toribio SDC 2 and Machine Learning 12.00 Discussion 13.00 Closing

New and future instrumentations (chair: Walter) - 25 Sep, 11.00-13.00 - open breakout session 11.00 Staveley-Smith CryoPAF 11.25 Walter DSA-2000 11.50 Gupta / Adams SKA 12.15 Wang FAST Core Array 12.40 Discussion 13.00 Closing

Kinematical modelling (chairs: Di Teodoro, Lelli, Spekkens) - 25 Sep, 14.00-18.00 - open breakout session14.00 Kamphuis FAT 14.15 Di Teodoro BBarolo 14.30 Deg 3KIDNAS 14.45 Marasco Bardolino 15.00 break 15.30 Davis KinMS 15.45 Oh BayGaud + kinematic tagging 16.00 Spekkens Recovering HI disk structure from marginally-resolved data 16.15 Open discussion on future of kinematical modelling 16.45 Tutorials: bring and fit your own cube 18.00 Closing

Visualisation (chair: Marchetti) - 26 Sep, 09.00-11.00 - open breakout sessionIn this breakout session, we will provide an overview of some of the visualisation tools currently under development, and we will discuss feature requests and the broad visualisation needs of the HI community. Talks are 12 min + 3 min for questions.PROGRAM:09.00 Marchetti Introduction of the session and goals09.05 van der Hulst Overview of historical tools + Slicer Astro09.20 Tudisco Visivo09.40 van Zyl CARTA09.55 Marchetti iDaVIE10.10 Glowacki / Kleiner iDaVIE in action10.25 Visualisation Round table discussion10.45 Discussion continues or Hands-on demo on demand11.00 Closing

Techniques for continuum subtraction (chair: Makhathini) - 26 Sep, 11.00-13.00 - open breakout sessionSeveral speakers will describe their preferred tools and workflow, lessons learned, things to avoid and areas of improvement -- followed by a general discussion.11.00 Makhathini Introduction11.10 Verheijen APERTIF11.20 de Blok / Maccagni MHONGOOSE / MeerKAT Fornax Survey11.30 Mohapatra LADUMA11.40 Kanekar GMRT surveys11.50 Westmeier WALLABY12.00 Discussion13.00 Closing

Source Characterisation (chair: van der Hulst) - 26 Sep, 11.00-14.30 - open breakout session11:00 van der Hulst Introduction11:15 Wang / Huang Global Profile Analysis: new methods from FAST11:40 Glowacki 1D asymmetries in SIMBA simulations12:00 Verheijen 2D asymmetries in simulations & observations12:20 Deg 3D asymmetries in simulations12:40 Perron-Cormier 3D asymmetries in observations13:00 Lunch break14:00 Discussion/Brainstorm14.30 Closing

Image quality in the era of big data (chairs: Westmeier, Meyer) - 26 Sep, 14.30-18.00 - open breakout sessionIncluding contributions by Lee-Waddell (AusSRC), Hess (APERTIF)14.30 Introduction14.35 Westmeier WALLABY14.45 Meyer DINGO14.55 Mohaptra LADUMA15.05 Hess APERTIF15.15 de Blok/Serra MHONGOOSE / MeerKAT Fornax Survey15.30 break15.50 Buckland-Wills GASKAP16.00 Lee-Waddell AusSRC16.10 TBD16.30 Discussion18.00 Closing

Observing HI in the simulations (chair: Oman) - 26 Sep, 14.00-18.00 - open breakout sessionIncluding contributions by Marasco, Oman, Perron-Cormier14.00 Welcome & simulations overview. What kinds of simulations exist, what is "HI" in a simulation, outline some specific projects with public data.14.20 Simulation catalogues. Short overview of what's usually included + hands-on tutorial: selecting a galaxy sample and population properties (e.g. plot HIMF or MHI-Mstar).15.20 break15.35 MARTINI overview & tutorial + introducing MOCHI16.50 break17.05 Collaborative hacking/brainstorming/ask-a-simulator18.00 Closing

Team meetings
- ASKAP-FLASH (chair: Mahony) - 25 Sep, 09.00-11.00 (open breakout session)
- MHONGOOSE (chair: de Blok) - 25 Sep, 09.00-11.00 (open breakout session)09:00-09:25 (20+5) Erwin de Blok - "MHONGOOSE current and future data releases"09:25-09:45 (15+5) Dane Kleiner - "Deep optical imaging of MHONGOOSE with the VST"09:45-10:00 (10+5) Omri Scannell - "The Strange HI Morphology & Kinematics of MHONGOOSE Galaxy UGCA 319"10:00-10:10 (5+5) Laurent Chemin - "Search for HI clouds in MHONGOOSE with deep learning"10:10-10:25 (10+5) Kyle Oman - "Multi-resolution kinematic modelling of MHONGOOSE galaxies"10:25-10:45 Discussion
- LADUMA (chairs: Baker, Blyth) - 25 Sep, 14.00-18.00 (team only)
- MeerKAT Fornax Survey (chair: Serra) - 25 Sep, 16.00-18.00 (team only)
- WALLABY (chair: Staveley-Smith) - 26 Sep, 09.00-11.00 (open breakout session)WALLABY update (Westmeier)Data access demo (Deg)Data validation demo (Lee-Waddell)Flux discrepancy issue (Westmeier)Discussion / Q&A (All)

iDaVIE/CARTA hands-on session across the 2 days of breakout sessions (25-26 September 2025)The IDIA Vislab team will be available for demos of both the iDaVIE volume and the brand new particle viewer, along with the latest CARTA v5. Walk-in demos will be accommodated to the best of our capacity, but to ease coordination, please complete this form at least 24hrs before the day you want a demo and follow the instructions provided. For any further questions, please contact Lucia Marchetti and the team at vislab@idia.ac.za.

final breakout session program

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