Bañados, Eduardo and Novak, Mladen and Neeleman, Marcel and Walter, Fabian and Decarli, Roberto and Venemans, Bram P. and Mazzucchelli, Chiara and Carilli, Chris and Wang, Feige and Fan, Xiaohui and Farina, Emanuele P. and Rix, Hans-Walter (2019) The z = 7.54 Quasar ULAS J1342+0928 Is Hosted by a Galaxy Merger. The Astrophysical Journal, 881 (1). L23. ISSN 2041-8213
Bañados_2019_ApJL_881_L23.pdf - Published Version
Download (1MB)
Abstract
We present ALMA 0farcs28 × 0farcs20 (1.4 kpc × 1.0 kpc) resolution observations of the [C ii] 158 μm line and underlying dust continuum in the host galaxy of the most distant quasar currently known, ULAS J1342+0928 at z = 7.5413. Both the [C ii] and continuum are detected and spatially resolved. The [C ii] line is ∼1.5 times more extended than the continuum emission, showing an elongated and complex structure of approximately 3.2 kpc × 6.4 kpc. Two separate peaks are clearly seen (≳6σ each) in three 100 km s−1 width [C ii] channel maps. The velocity field of the [C ii] gas does not show evidence of a coherent rotation field but rather chaotic motion reminiscent of an ongoing merger.
Item Type: | Article |
---|---|
Subjects: | STM One > Physics and Astronomy |
Depositing User: | Unnamed user with email support@stmone.org |
Date Deposited: | 31 May 2023 06:06 |
Last Modified: | 06 Jul 2024 07:30 |
URI: | http://publications.openuniversitystm.com/id/eprint/1236 |