The Collimated Wind in NGC 253

Abstract

Near-infrared Fabry-Perot imaging has revealed H2 emission extended to about 130 pc from the disk of NGC 253. It is closely related to the hot plasma observed in soft X-rays: filamentary H2 features are found at the edges of the hot plasma. These are the places of direct interaction between a superwind and its surrounding molecular gas. We suggest that the filamentary features actually trace a more or less conical shell-like structure, whose tangential line of sight to us is intensely observed. The H2 emission shell is most likely from the molecular gas blown out or swept to the side by the hot plasma outflow. Dust is associated with this molecular gas structure. The outflow is tilted with respect to the disk, possibly suggesting the inhomogeneous nature of the interstellar medium in which the starburst takes place.

arXiv comment12 pages, 6 figures, ApJL in press (February 10th 2003)

References in corpus (10)

• Starburst-driven galactic winds: I. Energetics and intrinsic X-ray emission
• The Asymmetric Wind in M82
• The Large-scale Bipolar Wind in the Galactic Center
• Chandra observations of NGC 253: New insights into the nature of starburst-driven superwinds
• The Nuclear Starburst in NGC 253
• Extreme Star Formation in the Interacting Galaxy Arp299 (IC694 + NGC3690)
• XMM-Newton observations of NGC 253: Resolving the emission components in the disk and nuclear area
• Chandra Observations of the Evolving Core of the Starburst Galaxy NGC 253
• A Multiwavelength View at the Heart of the Superwind in NGC 253
• Resolved shocks in clumpy media

Cited by in corpus (21)

• Galactic Winds
• A high spatial resolution X-ray and H-alpha study of hot gas in the halos of star-forming disk galaxies. I. Spatial and spectral properties of the diffuse X-ray emission
• The Starburst-Driven Molecular Wind in NGC 253 and the Suppression of Star Formation
• Excited OH+, H2O+, and H3O+ in NGC 4418 and Arp 220
• Spatially resolved optical IFU spectroscopy of the inner superwind of NGC 253
• High energy gamma-ray emission from the starburst nucleus of NGC 253
• Molecular Superbubbles in the Starburst Galaxy NGC 253
• Semi-analytic Simulations of Galactic Winds: Volume Filling Factor, Ejection of Metals and Parameter Study
• Molecular Hydrogen Excitation in Ultraluminous Infrared Galaxies
• PAH emission variations within the resolved starbursts of NGC253 and NGC1808
• Shocked Gas in IRAS F17207-0014: ISM Collisions and Outflows
• The Complex North Transition Region of Centaurus A: A Galactic Wind
• The Morpho-Kinematic Architecture of Super Star Clusters in the Center of NGC253
• AKARI Detection of Far-Infrared Dust Emission in the Halo of NGC253
• Empirical Constraints of Super-Galactic Winds at z >= 0.5
• Deep Hα Observations of NGC 253: a Very Extended and Possibly Declining Rotation Curve?
• Infrared Narrow-Band Tomography of the Local Starburst NGC 1569 with LBT/LUCIFER
• Galactic Wind in the Nearby Starburst Galaxy NGC 253 Observed with the Kyoto3DII Fabry-Perot Mode
• Uncovering the nucleus candidate for NGC 253
• The Dust Polarisation and Magnetic Field Structure in the Centre of NGC253 with ALMA
• Clustered Star Formation in the center of NGC 253 Contributes to Driving the Ionized Nuclear Wind