Dissecting The Multi-Phase Haloes Of High Redshift Radio Galaxies With Alma And Muse
| Autor: | S. Kolwa, J. Vernet, C. De Breuck, T. Falkendal, M. Lehnert |
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| Přispěvatelé: | Joël Vernet, Carlos De Breuck |
| Rok vydání: | 2018 |
| Předmět: | |
| DOI: | 10.5281/zenodo.1210071 |
| Popis: | I will present the most up-to-date observations of ionisation, excitation and absorption lines in the MUSE spectra of an interesting high redshift radio galaxy, MRC 0943-242 at z = 2.92. The spatial distribution of MUSE-detected emission in these lines reveals interactions between the galaxy’s radio jets and its ionised gas as well as possible evidence for tidal disruptions that may be associated with a minor merger. Line profile fitting to emission only components in CII], CIII], HeII, NIV] and OIII] reveal kinematically perturbed gas (FWHM > 1000 km/s) within a 40-60 kpc radial extent from the AGN. Fitting emission and absorption to resonant lines, Lyα and CIV reveal an absorbing gas medium in the form of concentric shells at z=2.91 and z=2.92. We measure their column densities. With our current observations and future work in modelling, we hope to further dissect and understand various aspects of the nature of gas surrounding high-redshift radio galaxies. {"references":["Silva et al: MNRAS 474, 3649–3672 (2018)","Gullberg et al: A&A 586, A124 (2016)","C. De Breuck et al: The Astrophysical Journal, 725:36–62, 2010 December 10","Binette et al: A&A 459, 31–42 (2006)","Villar-Martin et al: Mon. Not. R. Astron. Soc. 346, 273-294 (2003)","Jarvis et al: Mon. Not. R. Astron. Soc. 338, 263–272 (2003)"]} |
| Databáze: | OpenAIRE |
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