학술논문
JWST Observations of Starbursts: Polycyclic Aromatic Hydrocarbon Emission at the Base of the M 82 Galactic Wind
Document Type
Working Paper
Author
Bolatto, Alberto D.; Levy, Rebecca C.; Tarantino, Elizabeth; Boyer, Martha L.; Fisher, Deanne B.; Leroy, Adam K.; Cronin, Serena A.; Klessen, Ralf S.; Smith, J. D.; Berg, Dannielle A.; Boeker, Torsten; Boogaard, Leindert A.; Ostriker, Eve C.; Thompson, Todd A.; Ott, Juergen; Lenkic, Laura; Lopez, Laura A.; Dale, Daniel A.; Veilleux, Sylvain; van der Werf, Paul P.; Glover, Simon C. O.; Sandstrom, Karin M.; Skillman, Evan D.; Chisholm, John; Villanueva, Vicente; Lai, Thomas S. -Y.; Lopez, Sebastian; Mills, Elisabeth A. C.; Emig, Kimberly L.; Armus, Lee; Maya, Divakara; Meier, David S.; De Looze, Ilse; Herrera-Camus, Rodrigo; Walter, Fabian; Relano, Monica; Koziol, Hannah B.; Marvil, Joshua; Jimenez-Donaire, Maria J.; Martini, Paul
Source
Subject
Language
Abstract
We present new observations of the central 1 kpc of the M 82 starburst obtained with the James Webb Space Telescope (JWST) near-infrared camera (NIRCam) instrument at a resolution ~0.05"-0.1" (~1-2 pc). The data comprises images in three mostly continuum filters (F140M, F250M, and F360M), and filters that contain [FeII] (F164N), H2 v=1-0 (F212N), and the 3.3 um PAH feature (F335M). We find prominent plumes of PAH emission extending outward from the central starburst region, together with a network of complex filamentary substructure and edge-brightened bubble-like features. The structure of the PAH emission closely resembles that of the ionized gas, as revealed in Paschen alpha and free-free radio emission. We discuss the origin of the structure, and suggest the PAHs are embedded in a combination of neutral, molecular, and photoionized gas.
Comment: Submitted to The Astrophysical Journal
Comment: Submitted to The Astrophysical Journal