IC 4406: a radio-infrared view
L. Cerrigone (1, 2), J. L. Hora (1), G. Umana (3), C. Trigilio, (3) ((1) Harvard-Smithsonian Center for Astrophysics, Cambridge, USA; (2), University of Catania, Catania, Italy; (3) INAF-Catania Astrophysical, Observatory, Catania, Italy)
TL;DR
This paper presents combined radio and infrared observations of the planetary nebula IC 4406, revealing its complex structure, dust components, and the distribution of ionized gas and dust in the nebula.
Contribution
It provides new IRAC and radio observations, offering detailed insights into the nebula's morphology and dust composition, which were not previously characterized.
Findings
Ionized gas is concentrated in the central region with a clumpy structure.
Infrared images reveal filaments and clumps in the nebular envelope.
Multiple dust components are present in the nebula.
Abstract
IC 4406 is a large (about 100'' x 30'') southern bipolar planetary nebula, composed of two elongated lobes extending from a bright central region, where there is evidence for the presence of a large torus of gas and dust. We show new observations of this source performed with IRAC (Spitzer Space Telescope) and the Australia Telescope Compact Array. The radio maps show that the flux from the ionized gas is concentrated in the bright central region and originates in a clumpy structure previously observed in H_alpha, while in the infrared images filaments and clumps can be seen in the extended nebular envelope, the central region showing toroidal emission. Modeling of the infrared emission leads to the conclusion that several dust components are present in the nebula.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.