galaxies: active; galaxies: individual: NGC 5728; galaxies: nuclei; galaxies: Seyfert; Astrophysics - Astrophysics of Galaxies
Abstract :
[en] We report on our combined analysis of HST, VLT/MUSE, VLT/SINFONI, and ALMA observations of the local Seyfert 2 galaxy, NGC 5728 to investigate in detail the feeding and feedback of the active galactic nucleus (AGN). The data sets simultaneously probe the morphology, excitation, and kinematics of the stars, ionized gas, and molecular gas over a large range of spatial scales (10 pc to 10 kpc). NGC 5728 contains a large stellar bar that is driving gas along prominent dust lanes to the inner 1 kpc where the gas settles into a circumnuclear ring. The ring is strongly star forming and contains a substantial population of young stars as indicated by the lowered stellar velocity dispersion and gas excitation consistent with H II regions. We model the kinematics of the ring using the velocity field of the CO (2-1) emission and stars and find it is consistent with a rotating disc. The outer regions of the disc, where the dust lanes meet the ring, show signatures of inflow at a rate of 1 M$_☉$ yr$^-1$. Inside the ring, we observe three molecular gas components corresponding to the circular rotation of the outer ring, a warped disc, and the nuclear stellar bar. The AGN is driving an ionized gas outflow that reaches a radius of 250 pc with a mass outflow rate of 0.08 M$_☉$ yr$^-1$ consistent with its luminosity and scaling relations from previous studies. While we observe distinct holes in CO emission which could be signs of molecular gas removal, we find that largely the AGN is not disrupting the structure of the circumnuclear region.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Shimizu, T. Taro; Max-Planck-Institut für extraterrestrische Physik, Postfach 1312, D-85741Garching, Germany
Davies, R. I.
Lutz, D.
Burtscher, L.
Lin, M.
Baron, D.
Davies, R. L.
Genzel, R.
Hicks, E. K. S.
Koss, M.
Maciejewski, W.
Müller-Sánchez, F.
Orban De Xivry, Gilles ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > PSILab
Abuter, R., Schreiber, J., Eisenhauer, F., Ott, T., Horrobin, M., Gillesen, S., (2006) New Astron. Rev., 50, p. 398
Alonso-Herrero, A., (2018) ApJ, 859, p. 144
Arribas, S., Mediavilla, E., (1993) ApJ, 410, p. 552
(2013) A&A, 558, p. A33
(2018) AJ, 156, p. 123
Athanassoula, E., (1992) MNRAS, 259, p. 345
Bacon, R., (2010) Proc. SPIE Conf. Ser. Vol. 7735, Ground-Based and Airborne Instrumentation for Astronomy III, p. 773508. , McLean I. S., Ramsay S. K., Takami H., eds, SPIE, Bellingham
Bae, H.-J., Woo, J.-H., (2016) ApJ, 828, p. 97
Bae, H.-J., Woo, J.-H., Karouzos, M., Gallo, E., Flohic, H., Shen, Y., Yoon, S.-J., (2017) ApJ, 837, p. 91
Baldwin, J.A., Phillips, M.M., Terlevich, R., (1981) PASP, 93, p. 5
Baron, D., Netzer, H., (2019) MNRAS, 486, p. 4290. , BN19
Calzetti, D., Armus, L., Bohlin, R.C., Kinney, A.L., Koornneef, J., Storchi-Bergmann, T., (2000) ApJ, 533, p. 682
Cappellari, M., (2017) MNRAS, 466, p. 798
Cappellari, M., Copin, Y., (2003) MNRAS, 342, p. 345
Cappellari, M., Emsellem, E., (2004) PASP, 116, p. 138
Chabrier, G., (2003) PASP, 115, p. 763
Cicone, C., (2014) A&A, 562, p. A21
Combes, F., (2003) ASP Conf. Ser. Vol. 290, Active Galactic Nuclei: From Central Engine to Host Galaxy, p. 411. , Collin S., Combes F., Shlosman I., eds, Astron. Soc. Pac., San Francisco
Combes, F., Gerin, M., (1985) A&A, 150, p. 327
Crenshaw, D.M., Kraemer, S.B., (2000) ApJ, 532, p. L101
McMullin, J.P., Waters, B., Schiebel, D., Young, W., Golap, K., (2007) ASP Conf. Series Vol. 376, Astronomical Data Analysis Software and Systems XVI., p. 127. , Shaw R. A., Hill F., Bell D. J., eds, Astron. Soc. Pac., San Francisco
Mediavilla, E., Arribas, S., (1995) MNRAS, 276, p. 579
Mingozzi, M., (2019) A&A, 622, p. A146
Müller-Sánchez, F., Prieto, M.A., Hicks, E.K.S., Vives-Arias, H., Davies, R.I., Malkan, M., Tacconi, L.J., Genzel, R., (2011) ApJ, 739, p. 69
Nascimento, J.C.D., (2019) MNRAS, 486, p. 5075
Nelson, D., (2019) MNRAS, 490, p. 3234
Petitpas, G.R., Wilson, C.D., (2002) ApJ, 575, p. 814