Project description
Tracing the mysterious origin of hydrogen gas in galaxies
Neutral hydrogen gas is the fuel for star formation, but most galaxies do not have enough gas reserves to keep forming stars throughout their entire lifetime. Therefore, they must be accreting gas from elsewhere. Computer simulations suggest that this gas may come from the space between galaxies. As the radiation the gas emits is very faint, this process has not been observed so far. The EU-funded MeerGas project will use extremely sensitive radio observations of 30 nearby galaxies made by South Africa's MeerKAT telescope to detect the accreting gas. The project will comprise the only systematic study of gas accretion at high resolution and high sensitivity until the completion of the Square Kilometre Array radio telescope in a decade.
Objective
Neutral hydrogen drives galaxy evolution. It is the fuel for star formation. However, there is not enough present in galaxies to sustain star formation over the lifetime of the universe. Galaxies must acquire their gas from an external source through an as yet undetected process. MeerGas will identify how galaxies replenish their gas supply and will thereby deepen our understanding of galaxy evolution.
Simulations suggest that filaments of gas, which transfer intergalactic material, feed many galaxies. This process, called cold accretion, has not been observed directly as it needs sensitive observations that are virtually impossible with current telescopes. The new MeerKAT radio telescope in South Africa, the largest cm-wave synthesis radio telescope in the southern hemisphere, will fundamentally change this.
MeerGas uses high-resolution, high-sensitivity 3D observations of neutral hydrogen in 30 nearby galaxies obtained from the MHONGOOSE Large Survey Project, the highest-ranked MeerKAT imaging key survey. Uniquely, these observations probe structures up to two orders of magnitude fainter than in previous nearby galaxy neutral hydrogen surveys. The MeerGas analysis of these data will be unparalleled in its ability to determine the nature of accretion. MeerGas will be the only systematic study of accretion at high resolution and high sensitivity until the completion of the Square Kilometre Array in a decade.
The analysis of these unique data will be a challenge as the data volume will be two orders of magnitude larger than all recent nearby galaxy neutral hydrogen surveys combined. Through my extensive experience in nearby galaxies research and neutral hydrogen observations, I am uniquely qualified to lead this ambitious project, which will yield precision studies of the accretion processes in galaxies over a wide range of physical conditions and addresses an unanswered key question in galaxy evolution.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
You need to log in or register to use this function
We are sorry... an unexpected error occurred during execution.
You need to be authenticated. Your session might have expired.
Thank you for your feedback. You will soon receive an email to confirm the submission. If you have selected to be notified about the reporting status, you will also be contacted when the reporting status will change.
Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
-
H2020-EU.1.1. - EXCELLENT SCIENCE - European Research Council (ERC)
MAIN PROGRAMME
See all projects funded under this programme
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
ERC-ADG - Advanced Grant
See all projects funded under this funding scheme
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) ERC-2019-ADG
See all projects funded under this callHost institution
Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
3526 KV UTRECHT
Netherlands
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.