Oral Presentation

Molecular gas kinematics in the nuclear regions of NGC 3079

Author(s): Ming-Yi Lin (ASIAA), Richard Davies (MPE), and Melanie Krips (IRAM)

Presenter: Ming-Yi Lin (ASIAA)

Nuclear star formation around active galactic nucleus (AGN) is playing a crucial role in AGN feeding and feedback mechanism on galaxy evolution. From hydrodynamic simulation, the low power radio jets released from AGN are less efficiency at accelerating interstellar medium (ISM) clouds but give a significant impact on affecting the nuclear star formation in the host galaxy. We present the cold molecular gas observation for a nearby low accretion rate AGN – NGC 3079. The complex gas kinematics shows that they are composed of at least four components: the rotating molecular disk, the redshifted counter clumps associated to the milli-arcsec scale radio jet, the redshifted gas streamer aligned to the water maser disk, and the blueshifted gas outflows. We would like to discuss whether the interactions between outward radio jet and ISM can puff up the thickness of (circum-)nuclear molecular disk, in which the thick vertical structure was considered to be a result induced by nuclear star formation. In addition, we can calculate the kinetic energy of gas outflow released by an AGN that allows us to understand how efficient the radio jet energy at pc-scale can be transferred to the galactic kpc-scale medium.