| Issue |
A&A
Volume 671, March 2023
|
|
|---|---|---|
| Article Number | L12 | |
| Number of page(s) | 9 | |
| Section | Letters to the Editor | |
| DOI | https://doi.org/10.1051/0004-6361/202345964 | |
| Published online | 21 March 2023 | |
Letter to the Editor
Jet-induced molecular gas excitation and turbulence in the Teacup
1
Instituto de Astrofísica de Canarias, Calle Vía Láctea, s/n, 38205 La Laguna, Tenerife, Spain
e-mail: anelise.audibert@iac.es
2
Departamento de Astrofísica, Universidad de La Laguna, 38206 La Laguna, Tenerife, Spain
3
Observatorio Astronómico Nacional (OAN-IGN)-Observatorio de Madrid, Alfonso XII, 3, 28014 Madrid, Spain
4
Observatoire de Paris, LERMA, Collège de France, PSL University, CNRS, Sorbonne University, Paris, France
5
Dipartimento di Fisica, Sezione di Astronomia, Universitá di Trieste, Via Tiepolo 11, 34143 Trieste, Italy
6
Inter-University Centre for Astronomy and Astrophysics, Savitribai Phule Pune University Campus, Pune 411007, India
7
Research School of Astronomy and Astrophysics, The Australian National University, Canberra, ACT 2611, Australia
8
Center for Computational Sciences, University of Tsukuba, Tennodai 1-1-1, 305-0006 Tsukuba, Ibaraki, Japan
Received:
20
January
2023
Accepted:
26
February
2023
In order to investigate the impact of radio jets on the interstellar medium (ISM) of galaxies hosting active galactic nuclei (AGN), we present subarcsecond-resolution Atacama Large Millimeter/submillimeter Array (ALMA) CO(2-1) and CO(3-2) observations of the Teacup galaxy. This is a nearby (DL = 388 Mpc) radio-quiet type-2 quasar (QSO2) with a compact radio jet (Pjet ≈ 1043 erg s−1) that subtends a small angle from the molecular gas disc. Enhanced emission line widths perpendicular to the jet orientation have been reported for several nearby AGN for the ionised gas. For the molecular gas in the Teacup, not only do we find this enhancement in the velocity dispersion but also a higher brightness temperature ratio (T32/T21) perpendicular to the radio jet compared to the ratios found in the galaxy disc. Our results and the comparison with simulations suggest that the radio jet is compressing and accelerating the molecular gas, and driving a lateral outflow that shows enhanced velocity dispersion and higher gas excitation. These results provide further evidence that the coupling between the jet and the ISM is relevant to AGN feedback even in the case of radio-quiet galaxies.
Key words: galaxies: active / galaxies: individual: Teacup / galaxies: kinematics and dynamics / galaxies: jets / ISM: jets and outflows
© The Authors 2023
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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