A nuclear ionized gas outflow in the Seyfert 2 galaxy UGC 2024

Author:

Muñoz-Vergara Dania12,Nagar Neil M1,Ramakrishnan Venkatessh1ORCID,Finlez Carolina1,Storchi-Bergmann Thaisa3,Slater Roy4,Firpo Veronica25ORCID,Humire Pedro K1,Soto-Pinto Pamela1,Kraemer Steven B6,Lena Davide78ORCID,Robinson Andrew9,Riffel Rogemar A10ORCID,Crenshaw D Michael11,Elvis Martin S12,Fischer T C13,Schnorr-Müller Allan3,Schmitt Henrique R14

Affiliation:

1. Departamento de Astronomía, Universidad de Concepción, Concepción, Chile

2. Departamento de Física y Astronomía, Universidad de La Serena, La Serena, Chile

3. Instituto de Física, CP 15015, Universidade Federal do Rio Grande do Sul, 91501-970, Porto Alegre, RS, Brazil

4. Dirección de Formación General, Facultad de Educación y Cs. Sociales, Universidad Andres Bello, Sede Concepción, autopista Concepción-Talcahuano 7100, Talcahuano, Chile

5. Gemini Observatory, Southern Operations centre, La Serena, Chile

6. Institute for Astrophysics and Computational Sciences, Department of Physics, The Catholic University of America, Washington, DC 20064, USA

7. SRON, Netherlands Institute for Space Research, Sorbonnelaan 2, NL-3584 CA Utrecht, the Netherlands

8. Department of Astrophysics/IMAPP, Radboud University, Nijmegen, PO Box 9010, NL-6500 GL Nijmegen, the Netherlands

9. Department of Physics, Rochester Institute of Technology, 84 Lomb Memorial Drive, Rochester, NY 14623, USA

10. Universidade Federal de Santa Maria, Departamento de Física, Centro de Ciências Naturais e Exatas, 97105-900, Santa Maria, RS, Brazil

11. Department of Physics and Astronomy, Georgia State University, Astronomy Offices, 25 Park Place, Suite 605, Atlanta, GA 30303, USA

12. Harvard-Smithsonian Center for Astrophysics 60 Garden St., ms.6, Cambridge, MA 02138 USA

13. Astrophysics Science Division, Goddard Space Flight Center, Code 665, Greenbelt, MD 20771, USA

14. Naval Research Laboratory, Washington, DC 20375, USA

Abstract

ABSTRACT As part of a high-resolution observational study of feeding and feedback processes occurring in the vicinity of the active galactic nucleus in 40 galaxies, we observed the inner 3${^{\prime\prime}_{.}}$5 × 5 arcsec of the nearby spiral and Seyfert 2 galaxy UGC 2024 with the integral field unit of the Gemini-South Telescope. The observations enabled a study of the stellar and gas kinematics in this region at a spatial resolution of 0${^{\prime\prime}_{.}}$5 (218 pc), and a spectral resolution of 36  km s−1 over the wavelength range 4100–7300 Å. For the strongest emission-lines (H β, [$\rm{O\,{\small III}}$] λ5007 Å, H α, [$\rm{N\,{\small II}}$] λ6584 Å, and [$\rm{S\,{\small II}}$] λλ6717,6731 Å) we derived maps of the flux, radial velocity, and velocity dispersion. The flux distribution and kinematics of the [$\rm{O\,{\small III}}$] emission line are roughly symmetric around the nucleus: the radial velocity is close to systemic over the full field of view. The kinematics of the other strong emission lines trace both this systemic velocity component, and ordered rotation (with kinematic centre 0${^{\prime\prime}_{.}}$2 north-west of the nucleus). The stellar continuum morphology and kinematics are, however, asymmetrical around the nucleus. We interpret these unusual kinematics as the superposition of a component of gas rotating in the galaxy disc plus a ‘halo’ component of highly ionized gas. This halo either traces a quasi-spherical fountain with average radial velocity 200 km s−1, in which case the total nuclear outflow mass and momentum are 2 × 105 M⊙ and 4 × 107 M⊙ km s−1, respectively, or a dispersion supported halo created by a past nuclear starburst.

Funder

National Science Foundation

Comisión Nacional de Investigación Científica y Tecnológica

Ministerio de Ciencia, Tecnología e Innovación Productiva

Ministério da Ciência, Tecnologia e Inovação

Korea Astronomy and Space Science Institute

Consejo Nacional de Innovación, Ciencia y Tecnología

Conselho Nacional de Desenvolvimento Científico e Tecnológico

Jet Propulsion Laboratory

California Institute of Technology

National Aeronautics and Space Administration

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

Cited by 5 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Ionised gas kinematics in MaNGA AGN;Astronomy & Astrophysics;2022-03

2. AGNIFS survey of local AGN: GMOS-IFU data and outflows in 30 sources;Monthly Notices of the Royal Astronomical Society;2021-07-19

3. Ionized and hot molecular outflows in the inner 500 pc of NGC 1275;Monthly Notices of the Royal Astronomical Society;2020-07-06

4. Dusty Cloud Acceleration with Multiband Radiation;The Astrophysical Journal;2020-04-15

5. Outflowing gas in a compact ionization cone in the Seyfert 2 galaxy ESO 153-G20;Monthly Notices of the Royal Astronomical Society;2019-09-18

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