The Spitzer spectroscopic survey of the Small Magellanic Cloud: polycyclic aromatic hydrocarbon emission from SMC star-forming regions
Because of its proximity, the Small Magellanic Cloud provides a unique opportunity to map the polycyclic aromatic hydrocarbon (PAH) emission from photo-dissociation regions (PDRs) in a low-metallicity (12 + log(O/H) ~ 8) galaxy at high spatial resolution in order to learn about their abundance and p...
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| Veröffentlicht in: | Proceedings of the International Astronomical Union 2008-07, Vol.4 (S256), p.160-165 |
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| container_issue | S256 |
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| container_title | Proceedings of the International Astronomical Union |
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| creator | Sandstrom, Karin M. Bolatto, Alberto D. Stanimirović, Snežana Smith, J. D. T. van Loon, Jacco Th Leroy, Adam K. |
| description | Because of its proximity, the Small Magellanic Cloud provides a unique opportunity to map the polycyclic aromatic hydrocarbon (PAH) emission from photo-dissociation regions (PDRs) in a low-metallicity (12 + log(O/H) ~ 8) galaxy at high spatial resolution in order to learn about their abundance and physical state. We present mid-IR spectral mapping observations of star-forming regions in the Small Magellanic Cloud obtained as part of the Spitzer Spectroscopic Survey of the SMC (S4MC) project. These observations allow us to map the distribution of PAH emission in these regions and the measure the variation of PAH band strengths with local physical conditions. In these proceedings we discuss preliminary results on the physical state of the PAHs, in particular their ionization fraction. |
| doi_str_mv | 10.1017/S1743921308028408 |
| format | Article |
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| source | Cambridge University Press Journals Complete |
| subjects | Astrophysics Contributed Papers Polycyclic aromatic hydrocarbons Spectrum analysis Star & galaxy formation Stars & galaxies |
| title | The Spitzer spectroscopic survey of the Small Magellanic Cloud: polycyclic aromatic hydrocarbon emission from SMC star-forming regions |
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