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Träfflista för sökning "WFRF:(Soucail G.) ;pers:(Weilbacher P. M.)"

Sökning: WFRF:(Soucail G.) > Weilbacher P. M.

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1.
  • Boselli, A., et al. (författare)
  • Evidence for ram-pressure stripping in a cluster of galaxies at z=0.7
  • 2019
  • Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 631
  • Tidskriftsartikel (refereegranskat)abstract
    • Multi-Unit Spectroscopic Explorer (MUSE) observations of the cluster of galaxies CGr32 (M200'2×1014M) atz=0.73 revealthe presence of two massive star-forming galaxies with extended tails of diffuse gas detected in the [Oii]λλ3727–3729 Å emission-line doublet. The tails, which have a cometary shape with a typical surface brightness of a few 10−18erg s−1cm−2arcsec−2, extendup to'100 kpc (projected distance) from the galaxy discs, and are not associated with any stellar component. All this observationalevidence suggests that the gas was removed during a ram-pressure stripping event. This observation is thus the first evidence thatdynamical interactions with the intracluster medium were active when the Universe was only half its present age. The density of thegas derived using the observed [Oii]λ3729/[Oii]λ3726 line ratio implies a very short recombination time, suggesting that a source ofionisation is necessary to keep the gas ionised within the tail.
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2.
  • Diener, C., et al. (författare)
  • The MUSE-Wide survey : detection of a clustering signal from Lyman alpha emitters in the range 3 < z < 6
  • 2017
  • Ingår i: Monthly notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 471:3, s. 3186-3192
  • Tidskriftsartikel (refereegranskat)abstract
    • We present a clustering analysis of a sample of 238 Ly alpha emitters at redshift 3 less than or similar to z less than or similar to 6 from the MUSE-Wide survey. This survey mosaics extragalactic legacy fields with 1h MUSE pointings to detect statistically relevant samples of emission line galaxies. We analysed the first year observations from MUSE-Wide making use of the clustering signal in the line-of-sight direction. This method relies on comparing pair-counts at close redshifts for a fixed transverse distance and thus exploits the full potential of the redshift range covered by our sample. A clear clustering signal with a correlation length of r(0) = 2.9(-1.1)(+1.0) Mpc (comoving) is detected. Whilst this result is based on only about a quarter of the full survey size, it already shows the immense potential of MUSE for efficiently observing and studying the clustering of Ly alpha emitters.
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