HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Preprints, Working Papers, ...

The MUSE Extremely Deep Field: Evidence for SFR-induced cores in dark-matter dominated galaxies at z=1

Abstract : Disc-halo decomposition on rotationally supported star-forming galaxies (SFGs) at $z>1$ are often limited to massive galaxies ($M_\star>10^{10}~M_\odot$) and rely on either deep Integral Field Spectroscopy data or stacking analyses. We present a study of the dark matter (DM) content of nine $z\approx1$ SFGs selected Using the brightest [OII] emitters in the deepest Multi-Unit Spectrograph Explorer (MUSE) field to date, namely the 140hr MUSE Extremely Deep Field, we perform disk-halo decompositions on 9 low-mass SFGs (with $10^{8.5}10^{10}~M_\odot$. The DM halos show constant surface densities of $\sim100~M_\odot$ pc$^{-2}$. Half of the sample shows a strong preference for cored over cuspy DM profiles. The presence of DM cores appears to be related to galaxies with stellar-to-halo mass $\log M_\star/M_{\rm vir}\approx-2.5$. In addition, the cuspiness of the DM profiles is found to be a strong function of the recent star-formation activity. Both of these results are interpreted as evidence for feedback-induced core formation in the Cold Dark Matter context.
Document type :
Preprints, Working Papers, ...
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-03450793
Contributor : Nicolas Bouché Connect in order to contact the contributor
Submitted on : Friday, November 26, 2021 - 6:00:32 PM
Last modification on : Monday, May 16, 2022 - 8:20:24 AM
Long-term archiving on: : Sunday, February 27, 2022 - 8:09:57 PM

File

mxdf_dark.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-03450793, version 1
  • ARXIV : 2109.07545

Collections

Citation

Nicolas F. Bouché, Samuel Bera, Davor Krajnovic, Eric Emsellem, Wilfried Mercier, et al.. The MUSE Extremely Deep Field: Evidence for SFR-induced cores in dark-matter dominated galaxies at z=1. 2021. ⟨hal-03450793⟩

Share

Metrics

Record views

16

Files downloads

1