GOALS-JWST: Pulling Back the Curtain on the AGN and Star Formation in VV 114
Artikel i vetenskaplig tidskrift, 2023

We present results from the James Webb Space Telescope Director’s Discretionary Time Early Release Science program 1328 targeting the nearby, luminous infrared galaxy, 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 active galactic nucleus as evidenced by its very low 6.2 μm and 3.3 μm polycyclic aromatic hydrocarbon 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 H2, far from the IR-bright cores and clumps. We also identify broadening and multiple kinematic components in both H2 and fine structure lines caused by outflows and previously identified tidal features.

Författare

Jeffrey A. Rich

Carnegie Observatories

Susanne Aalto

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik

Aaron S. Evans

National Radio Astronomy Observatory

University of Virginia

V. Charmandaris

Panepistimio Kritis

Idryma Technologias kai Erevnas (FORTH)

European University Cyprus

G. Privon

University of Florida

National Radio Astronomy Observatory

Thomas Lai

California Institute of Technology (Caltech)

H. Inami

Hiroshima University

S. T. Linden

University of Massachusetts

Lee Armus

California Institute of Technology (Caltech)

T. Diaz-Santos

Idryma Technologias kai Erevnas (FORTH)

European University Cyprus

P. Appleton

California Institute of Technology (Caltech)

Loreto Barcos-Munoz

University of Virginia

T. Boker

Europeiska rymdorganisationen (ESA)

K. Larson

Space Telescope Science Institute (STScI)

David R. Law

Space Telescope Science Institute (STScI)

M. A. Malkan

University of California

Anne M. Medling

University of Toledo

ARC Centre of Excellence for All-sky Astrophysics

Y. Song

National Radio Astronomy Observatory

University of Virginia

U. Vivian

University of California at Irvine (UCI)

Paul P. van der Werf

Universiteit Leiden

Thomas Bohn

Hiroshima University

Michael J.I. Brown

Monash University

Luke Finnerty

University of California

Christopher C. Hayward

Flatiron Institute

Justin Howell

California Institute of Technology (Caltech)

K. Iwasawa

Universitat de Barcelona

Institucio Catalana de Recerca i Estudis Avancats

F. Kemper

Institut d'Estudis Espacials de Catalunya (IEEC)

Institut de Ciències de l'Espai (ICE) - CSIC

Institucio Catalana de Recerca i Estudis Avancats

J. P. Marshall

Glendale Community College

J. Mazzarella

California Institute of Technology (Caltech)

Jed McKinney

University of Massachusetts

Francisco Muller-Sanchez

University of Memphis

Eric J. Murphy

National Radio Astronomy Observatory

David Sanders

University of Hawaii

B. T. Soifer

California Institute of Technology (Caltech)

S. Stierwalt

Occidental College

J. A. Surace

California Institute of Technology (Caltech)

Astrophysical Journal Letters

2041-8205 (ISSN) 2041-8213 (eISSN)

Vol. 944 2 L50

Exploring the Hidden Dusty Nuclei of Galaxies (HIDDeN)

Europeiska forskningsrådet (ERC) (789410), 2018-10-01 -- 2023-09-30.

Ämneskategorier

Astronomi, astrofysik och kosmologi

Atom- och molekylfysik och optik

Annan fysik

DOI

10.3847/2041-8213/acb2b8

Mer information

Senast uppdaterat

2023-12-01