The 23 μm Feature in Starburst Galaxies

Details The 23 μm Feature in Starburst Galaxies The 23 μm Feature in Starburst Galaxies

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..381...50t&link_type=abstract

The Second Annual Spitzer Science Center Conference: Infrared Diagnostics of Galaxy Evolution. ASP Conference Series, Vol. 381,

Astronomy and Astrophysics

Astronomy

3

Scientific paper

We report the detection of a small hump around 23 µ in eight starburst galaxies: NGC2782, NGC5430, and NGC6764 from our samples, and IC342, NGC1569, NGC4818, NGC7252, and NGC7714 from the archival data which were obtained with the Infrared Spectrograph (IRS) on board the Spitzer Space Telescope. The luminosity of the 23 µ feature increases with the ratios of FeII 26.0 µ intensity to the K-band and the infrared luminosity, suggesting that the 23 µ feature is strongly related to supernovae and recent star-formation activities in ˜10^7 yr.

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