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

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 μm and 3.3 μm PAH equivalent widths (0.12 and 0.017 μm 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]/Pfα 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.

arXiv comment12 pages, 4 figures, accepted for publication in ApJL

References in corpus (58)

• A Cosmology Calculator for the World Wide Web
• What Powers Ultra-luminous IRAS Galaxies?
• Calibrating Extinction-Free Star Formation Rate Diagnostics with 33GHz Free-Free Emission in NGC6946
• The Near-Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope I. Overview of the instrument and its capabilities
• The Mid-Infrared Instrument for the James Webb Space Telescope I: Introduction
• Observations of Ultraluminous Infrared Galaxies with the Infrared Spectrograph on the Spitzer Space Telescope II: The IRAS Bright Galaxy Sample
• Mid-IR Galaxy Classification Based on Silicate Obscuration and PAH Equivalent Width
• Fast Molecular Outflows in Luminous Galaxy Mergers: Evidence for Quasar Feedback from Herschel
• A Herschel/PACS Far Infrared Line Emission Survey of Local Luminous Infrared Galaxies
• The Mid-Infrared Instrument for the James Webb Space Telescope, VI: The Medium Resolution Spectrometer
• Galaxy-Wide Shocks in Late-Merger Stage Luminous Infrared Galaxies
• Mid-Infrared line diagnostics of Active Galaxies -- A spectroscopic AGN survey with ISO-SWS
• The Great Observatories All-Sky LIRG Survey: Comparison of Ultraviolet and Far-Infrared Properties
• Mid-Infrared Spectra of Classical AGN Observed with the Spitzer Space Telescope
• The Near-Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope III. Integral-field spectroscopy
• Mid-Infrared Properties of Nearby Luminous Infrared Galaxies I: Spitzer IRS Spectra for the GOALS Sample
• Mid-Infrared Spectral Diagnostics of Luminous Infrared Galaxies
• Vibrationally Excited HCN in the Luminous Infrared Galaxy NGC 4418
• The Mid-Infrared Instrument for the James Webb Space Telescope, III: MIRIM, The MIRI Imager
• The Mid-infrared Fine-structure Lines of Neon as an Indicator of Star For mation Rate in Galaxies
• Strong molecular hydrogen emission and kinematics of the multiphase gas in radio galaxies with fast jet-driven outflows
• Galaxy Mergers Drive Shocks: an Integral Field Study of GOALS galaxies
• AKARI IRC infrared 2.5-5 micron spectroscopy of a large sample of luminous infrared galaxies
• Mid-Infrared Atomic Fine-Structure Emission Line Spectra of Luminous Infrared Galaxies: Spitzer/IRS Spectra of the GOALS Sample
• The Detection of Crystalline Silicates in Ultra-Luminous Infrared Galaxies
• Mid-Infrared Properties of Luminous Infrared Galaxies II: Probing the Dust and Gas Physics of the GOALS Sample
• Systematic infrared 2.5-5 micron spectroscopy of nearby ultraluminous infrared galaxies with AKARI
• Infrared Molecular Starburst Fingerprints in Deeply Obscured (U)LIRG Nuclei
• A hard X-ray view of Luminous and Ultra-luminous Infrared Galaxies in GOALS: I - AGN obscuration along the merger sequence
• Turbulent molecular gas and star formation in the shocked intergalactic medium of Stephan's Quintet
• All the PAHs: an AKARI-Spitzer Cross Archival Spectroscopic Survey of Aromatic Emission in Galaxies
• The Emission-Line Spectra of Major Mergers: Evidence for Shocked Outflows
• A Hard X-ray Test of HCN Enhancements as a Tracer of Embedded Black Hole Growth
• GOALS-JWST: Mid-Infrared Spectroscopy of the Nucleus of NGC 7469
• CON-quest: Searching for the most obscured galaxy nuclei
• Modeling The Molecular Composition in an AGN Disk
• Powerful H2 Line Cooling in Stephan's Quintet II. Group-wide Gas and Shock Modeling of the Warm H2 and a Comparison with [CII]157.7um Emission and Kinematics
• ISO-SWS spectroscopy of NGC 1068
• Far-Ultraviolet & X-ray Observations of VV 114: Feedback in a Local Analog to Lyman Break Galaxies
• The hidden heart of the luminous infrared galaxy IC 860 I. A molecular inflow feeding opaque, extreme nuclear activity
• The Buried Starburst in the Interacting Galaxy II Zw 096 as Revealed by the Spitzer Space Telescope
• ALMA Multi-line Observations of the IR-bright Merger VV 114
• The Inner Kiloparsec of Mrk 273 with Keck Adaptive Optics
• Star Clusters as Tracers of Interactions in Stephan's Quintet (Hickson Compact Group 92)
• GOALS-JWST: Resolving the Circumnuclear Gas Dynamics in NGC 7469 in the Mid-Infrared
• The AKARI 2.5-5 Micron Spectra of Luminous Infrared Galaxies in the Local Universe
• Extended mid-infrared emission from VV 114: probing the birth of a ULIRG
• GOALS-JWST: Hidden Star Formation and Extended PAH Emission in the Luminous Infrared Galaxy VV 114
• The Obscured Nucleus and Shocked Environment of VV 114E Revealed by JWST/MIRI Spectroscopy
• Active Galactic Nucleus and Extended Starbursts in a Mid-stage Merger VV114
• A bias in optical observations of high redshift luminous infrared galaxies
• Characterizing Compact 15-33 GHz Radio Continuum Sources in Local U/LIRGs
• Merger-induced Shocks in the Nearby LIRG VV 114 through Methanol Observations with ALMA
• Spatially-resolved Dense Molecular Gas Excitation in the Nearby LIRG VV 114
• The Nature of Deeply Buried Ultraluminous Infrared Galaxies: A Unified Model for Highly Obscured Dusty Galaxy Emission
• GOALS-JWST: Unveiling Dusty Compact Sources in the Merging Galaxy IIZw096
• Deeply Buried Nuclei in the Infrared-Luminous Galaxies NGC 4418 and Arp 220: I. ALMA Observations at $\lambda =$1.4-0.4 mm and Continuum Analysis
• On the X-ray Spectral Energy Distributions of Star-Forming Galaxies: the 0.3-30 keV Spectrum of the Low-Metallicity Starburst Galaxy VV 114

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