Home News About Us Contact Contributors Disclaimer Privacy Policy Help FAQ

Quick Search
My eDoc
Session History
Support Wiki
Direct access to
document ID:

          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 308768.0, MPI für Astronomie / Publikationen_mpia
Extended mid-infrared aromatic feature emission in M82
Authors:Engelbracht, C. W.; Kundurthy, P.; Gordon, K. D.; Rieke, G. H.; Kennicutt, R. C.; Smith, J. D. T.; Regan, M. W.; Makovoz, D.; Sosey, M.; Draine, B. T.; Helou, G.; Armus, L.; Calzetti, D.; Meyer, M.; Bendo, G. J.; Walter, F.; Hollenbach, D.; Cannon, J. M.; Murphy, E. J.; Dale, D. A.; Buckalew, B. A.; Sheth, K.
Date of Publication (YYYY-MM-DD):2006
Journal Abbrev.:The Astrophysical Journal
Start Page:L127
End Page:L132
Audience:Not Specified
Abstract / Description:We present new images (ground-based optical and mid-infrared [MIR] from the Spitzer Space Telescope) and spectra (from Spitzer) of the archetypal starburst galaxy M82. The Spitzer data show that the MIR emission extends at least 6 kpc along the minor axis of the galaxy. We use the optical and infrared data to demonstrate that the extended emission is dominated by emission from dust. The colors of the MIR emission and the spectra indicate that there is a strong component of aromatic feature emission (the MIR features commonly attributed to polycyclic aromatic hydrocarbons). The dust continuum and aromatic feature emission are both strong in the well-known superwind region of this galaxy; clearly, the carrier of the aromatic features can survive in close proximity to the wind, far from the plane of the galaxy. We also see significant emission by dust well outside the superwind region, providing the clearest picture to date of the dust distribution in the halo of this galaxy.
Free Keywords:ISM: Dust; Extinction; Galaxies: Individual: Messier Number: M82; Galaxies: ISM; Galaxies: Peculiar; Galaxies: Starburst
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
The scope and number of records on eDoc is subject to the collection policies defined by each institute - see "info" button in the collection browse view.