Active galactic nuclei signatures in Red Geyser galaxies from Gemini GMOS-IFU observations

ABSTRACT Red Geysers are quiescent galaxies with galactic scale ionized outflows, likely due to low-luminosity active nuclei (AGN). We used Gemini GMOS-IFU observations of the inner ∼1–3 kpc nine selected from MaNGA survey study gas ionization and kinematics. The emission-line ratios suggest presence Seyfert/LINER (Low Ionization Nuclear Emission Region) in all sources. Two show Hα equivalent width ( EW) larger than 3 Å (indicative AGN ionization) within an aperture 2 ${_{.}^{\prime\prime}}$5 diameter (1.3–3.7 at distance galaxies) for data, while higher resolution GMOS four present EW>3 equal angular (0.3–0.9 kpc). For two objects EW is lower but 1.5 Å, most probably a faint AGN. spatially resolved electron density maps values between 100 3000 cm −3 consistent those determined other studies. large (MaNGA) nuclear (GMOS-IFU) velocity fields misaligned, kinematic position angle difference 12° 60°. [N ii] λ6583 profiles asymmetrical, blue wings on redshifted side field red blueshifted side. Our results support previous indications that by AGN, least their central region, originating precessing accretion disc.