| Issue |
EAS Publications Series
Volume 46, 2011
PAHs and the Universe: A Symposium to Celebrate the 25th Anniversary of the PAH Hypothesis
|
|
|---|---|---|
| Page(s) | 143 - 148 | |
| DOI | https://doi.org/10.1051/eas/1146015 | |
| Published online | 30 March 2011 | |
C. Joblin and A.G.G.M. Tielens (eds)
EAS Publications Series, 46 (2011) 143-148
PAHs and the ISM in Metal-Poor Starbursts
1
INAF-Osservatorio di Arcetri, Firenze, Italy
2
Main Astronomical Observatory, Kiev, Ukraine
3
CEA, Saclay, France
4
University of Virginia, Charlottesville,
USA
We characterize PAH populations in 22 metal-poor blue compact dwarf galaxies (BCDs), 16 of which have an oxygen abundance 12+log(O/H) ≲ 8. This is the largest sample ever studied at such low metallicities. The relative PAH intensities of the 6.2, 7.7, 8.6 and 11.3 μm features in these BCDs suggest a deficit of small PAH carriers, or alternatively, an excess of large ones at these low abundances.
© EAS, EDP Sciences 2011