an overview of the MHONGOOSE survey: Observing nearby galaxies with MeerKAT
Paper i proceeding, 2016

MHONGOOSE is a deep survey of the neutral hydrogen distribution in a representative sample of 30 nearby disk and dwarf galaxies with H I masses from ∼ 106 to ∼ 1011 M, and luminosities from MR ∼ 12 to MR ∼ −22. The sample is selected to uniformly cover the available range in log(MHI). Our extremely deep observations, down to H I column density limits of well below 1018 cm−2 — or a few hundred times fainter than the typical H I disks in galaxies — will directly detect the effects of cold accretion from the intergalactic medium and the links with the cosmic web. These observations will be the first ever to probe the very low-column density neutral gas in galaxies at these high resolutions. Combination with data at other wavelengths, most of it already available, will enable accurate modeling of the properties and evolution of the mass components in these galaxies and link these with the effects of environment, dark matter distribution, and other fundamental properties such as halo mass and angular momentum. MHONGOOSE can already start addressing some of the SKA-1 science goals and will provide a comprehensive inventory of the processes driving the transformation and evolution of galaxies in the nearby universe at high resolution and over 5 orders of magnitude in column density. It will be a Nearby Galaxies Legacy Survey that will be unsurpassed until the advent of the SKA, and can serve as a highly visible, lasting statement of MeerKAT’s capabilities.

Molecular clouds

Cosmology

Angular distribution

star formations

Surveys

Density of gases

supernovae

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Publicerad i

Proceedings of Science

18248039 (eISSN)

Konferens

2016 MeerKAT Science: On the Pathway to the SKA, MeerKAT 2016
Stellenbosch, South Africa, 2016-05-24 - 2016-05-26

Kategorisering

Ämneskategorier (SSIF 2011)

Subatomär fysik

Astronomi, astrofysik och kosmologi

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Senast uppdaterat

2025-03-09