ESO DOI Service

• Duncan, Kenneth [University of Edinburgh, UK]
• Baker, Andrew [Rutgers University, USA]
• Best, Philip [University of Edinburgh, UK]
• Blyth, Sarah [University of Cape Town, South Africa]
• Hatch, Nina [University of Nottingham, UK]
• Holwerda, Benne [University of Louisville, USA]
• Jarvis, Matt [University of Oxford, UK]
• Maddox, Natasha [University of Bristol, UK]
• Smith, Daniel J. B. [University of Hertfordshire, UK]
• Arnaudova, Marina [University of Hertfordshire, UK]
• Chemin, Laurent [Andres Bello University, Santiago, Chile]
• Davé, Romeel [University of Edinburgh, UK]
• Dunlop, James [University of Edinburgh, UK]
• Frank, Bradley [South African Radio Astronomy Observatory, South Africa]
• Gawiser, Eric [Rutgers University, USA]
• Gloudemans, Anniek [Leiden University, the Netherlands]
• Hale, Catherine [University of Edinburgh, UK]
• Heywood, Ian [University of Oxford, UK]
• Kannappan, Sheila [University of North Carolina at Chapel Hill, USA]
• Kondapally, Rohit [University of Edinburgh, UK]
• McLure, Ross [University of Edinburgh, UK]
• Morabito, Leah [Durham University, UK]
• Nesvadba, Nicole [Lagrange Laboratory, Côte d’Azur Observatory, Côte d’Azur University, Nice, France]
• Pan, Hengxing [South African Radio Astronomy Observatory, South Africa]
• Ponomareva, Anastasia [University of Oxford, UK]
• Prescott, Matt [University of the Western Cape, South Africa]
• Roberts, Hayley [University of Colorado at Boulder, USA]
• Röttgering, Huub [Leiden University, the Netherlands]
• Somerville, Rachel [Flatiron Institute, New York, USA]
• Tudorache, Madalina [University of Oxford, UK]
• Vaccari, Mattia [University of Cape Town, South Africa]
• Whittam, Imogen [University of Oxford, UK]
• Wu, John [Space Telescope Science Institute, USA]
• Zwaan, Martin [European Southern Observatory (ESO)]

Galaxy evolution is regulated by the continuous cycle of gas accretion, consumption and feedback. Crucial in this cycle is the availability of neutral atomic (HI) and molecular hydrogen. Our current inventory of HI, however, is very limited beyond the local Universe (z > 0.25), resulting in an incomplete picture. ORCHIDSS is designed to address this critical challenge, using the powerful combination of 4MOST spectroscopy and sensitive radio observations from the MeerKAT deep extragalactic surveys to trace the evolution of neutral gas and its lifecycle within galaxies across the bulk of cosmic history.