Spatially Resolved Outflows in a Seyfert Galaxy at z=2.39

Fischer, Travis C ; Rigby, J R ; Mahler,G ; Gladders, M ; Sharon, K ; Florian, M ; Kraemer, S ; Bayliss, M ; Dahle, H ; Barrientos, L Felipe(Pontifical Catholic Univ of Chile, Instituto de Astrofisica, Santiago, Chile)

关键词: COSMIC GASES;    GALAXIES;    INTERGALACTIC MEDIA;    SEYFERT GALAXIES;    STELLAR SPECTRA;    LINE SPECTRA;    LYMAN ALPHA RADIATION;    STAR FORMATION;    STAR FORMATION RATE;    NEAR INFRARED RADIATION;    RED SHIFT;    SPATIAL RESOLUTION;    IMAGING TECHNIQUES;    GRAVITATIONAL LENSES;    IONIZATION;    ULTRAVIOLET ASTRONOMY;    INFRARED ASTRONOMY;   

RP-ID  :  GSFC-E-DAA-TN70867

学科分类：天体物理学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

We present the first spatially resolved analysis of rest-frame optical and UV (UltraViolet) imaging and spectroscopy for a lensed galaxy at z equals 2.39 hosting a Seyfert active galactic nucleus (AGN). Proximity to a natural guide star has enabled observations with high signal-to-noise ratio using Very Large Telescope SINFONI (Spectrograph for INtegral Field Observations in the Near Infrared) plus adaptive optics (AO) of rest-frame optical diagnostic emission lines, which exhibit an underlying broad component with full width at half maximum approximately 700 kilometers per second in both the Balmer and forbidden lines. Measured line ratios place the outflow robustly in the region of the ionization diagnostic diagrams associated with AGNs. This unique opportunity - combining gravitational lensing, AO guiding, redshift, and AGN activity - allows for a magnified view of two main tracers of the physical conditions and structure of the interstellar medium in a star-forming galaxy hosting a weak AGN at Cosmic Noon. By analyzing the spatial extent and morphology of the Lyman alpha spectral line and dust-corrected Hydrogen spectral line emission, disentangling the effects of star formation and AGN ionization on each tracer, and comparing the AGN-induced mass outflow rate to the host star formation rate, we find that the AGN does not significantly impact the star formation within its host galaxy.