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arXiv:2301.02338 (astro-ph)
[Submitted on 6 Jan 2023]

Title:GOALS-JWST: Pulling Back the Curtain on the AGN and Star Formation in VV 114

Authors:J. Rich, S. Aalto, A.S. Evans, V. Charmandaris, G. C. Privon, T. Lai, H. Inami, S. Linden, L. Armus, T. Diaz-Santos, P. Appleton, L. Barcos-Muñoz, T. Böker, K. L. Larson, D. R. Law, M. A. Malkan, A. M. Medling, Y. Song, V. U, P. van der Werf, T. Bohn, M. J. I. Brown, L. Finnerty, C. Hayward, J. Howell, K. Iwasawa, F. Kemper, J. Marshall, J. M. Mazzarella, J. McKinney, F. Muller-Sanchez, E.J. Murphy, D. Sanders, B. T. Soifer, S. Stierwalt, J. Surace
View a PDF of the paper titled GOALS-JWST: Pulling Back the Curtain on the AGN and Star Formation in VV 114, by J. Rich and 35 other authors
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Abstract:We present results from the James Webb Space Telescope (JWST) Director's Discretionary Time Early Release Science (ERS) program 1328 targeting the nearby, Luminous Infrared Galaxy (LIRG), VV 114. We use the MIRI and NIRSpec instruments to obtain integral-field spectroscopy of the heavily obscured Eastern nucleus (V114E) and surrounding regions. The spatially resolved, high-resolution, spectra reveal the physical conditions in the gas and dust over a projected area of 2-3 kpc that includes the two brightest IR sources, the NE and SW cores. Our observations show for the first time spectroscopic evidence that the SW core hosts an AGN as evidenced by its very low 6.2 {\mu}m and 3.3 {\mu}m PAH equivalent widths (0.12 and 0.017 {\mu}m respectively) and mid and near-IR colors. Our observations of the NE core show signs of deeply embedded star formation including absorption features due to aliphatic hydrocarbons, large quantities of amorphous silicates, as well as HCN due to cool gas along the line of sight. We detect elevated [Fe II]/Pf{\alpha} consistent with extended shocks coincident with enhanced emission from warm H$_{2}$, far from the IR-bright cores and clumps. We also identify broadening and multiple kinematic components in both H$_{2}$ and fine structure lines caused by outflows and previously identified tidal features.
Comments: 12 pages, 4 figures, accepted for publication in ApJL
Subjects: Astrophysics of Galaxies (astro-ph.GA)
Cite as: arXiv:2301.02338 [astro-ph.GA]
  (or arXiv:2301.02338v1 [astro-ph.GA] for this version)
  https://doi.org/10.48550/arXiv.2301.02338
arXiv-issued DOI via DataCite
Related DOI: https://doi.org/10.3847/2041-8213/acb2b8
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From: Jeffrey Rich [view email]
[v1] Fri, 6 Jan 2023 00:03:26 UTC (3,340 KB)
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