MIGHTEE-Hi: The relation between the Hi gas in galaxies and the cosmic web

Simple item page
dc.contributor.authorTudorache, Madalina N.
dc.contributor.authorJarvis, Matthew J.
dc.contributor.authorHeywood, Ian
dc.date.accessioned2022-07-21T10:06:49Z
dc.date.available2022-07-21T10:06:49Z
dc.date.issued2022
dc.description.abstractWe study the 3D axis of rotation (3D spin) of 77 Hi galaxies from the MIGHTEE-Hi Early Science observations, and its relation to the filaments of the cosmic web. For this Hi-selected sample, the alignment between the spin axis and the closest filament (|cos 𝜓|) is higher for galaxies closer to the filaments, with h|cos 𝜓|i = 0.66 ± 0.04 for galaxies < 5 Mpc from their closest filament compared to h|cos 𝜓|i = 0.37±0.08 for galaxies at 5 < 𝑑 < 10 Mpc. We find that galaxies with a low Hi-to-stellar mass ratio (log10 (𝑀HI/𝑀★) < 0.11) are more aligned with their closest filaments, with h|cos 𝜓|i = 0.58 ± 0.04; whilst galaxies with (log10 (𝑀HI/𝑀★) > 0.11) tend to be mis-aligned, with h|cos 𝜓|i = 0.44 ± 0.04. We find tentative evidence that the spin axis of Hi-selected galaxies tend to be aligned with associated filaments (𝑑 < 10 Mpc), but this depends on the gas fractions. Galaxies that have accumulated more stellar mass compared to their gas mass tend towards stronger alignment.en_US
dc.identifier.citationTudorache, M. N. et al. (2022). MIGHTEE-Hi: The relation between the Hi gas in galaxies and the cosmic web. Monthly Notices of the Royal Astronomical Society, 513(2), 2168-2177. 10.1093/mnras/stac996en_US
dc.identifier.issn1365-2966
dc.identifier.uri10.1093/mnras/stac996
dc.identifier.urihttp://hdl.handle.net/10566/7623
dc.language.isoenen_US
dc.publisherOxford University Pressen_US
dc.subjectKinematicsen_US
dc.subjectGalaxiesen_US
dc.subjectScienceen_US
dc.subjectAstrophysicsen_US
dc.titleMIGHTEE-Hi: The relation between the Hi gas in galaxies and the cosmic weben_US
dc.typeArticleen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
tudorache_mightee-hi the relation between the hi_2022.pdf
Size:
1.17 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Research Articles (Physics)