Mid-infrared spectroscopy of obscured IRAS galaxies

Details Mid-infrared spectroscopy of obscured IRAS galaxies Mid-infrared spectroscopy of obscured IRAS galaxies

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...334..482m&link_type=abstract

Astronomy and Astrophysics, v.334, p.482-488 (1998)

Astronomy and Astrophysics

Astrophysics

5

Galaxies: Ism, Galaxies: Starburst, Infrared: Galaxies, Infrared: Ism: Lines And Bands

Scientific paper

Spectra from 6 to 12 mu m are presented for the infrared galaxies NGC 1266, Arp 148, and IRAS 1713+53. Though they are not markedly luminous (<= 10(12) L_&sun;), their IRAS colors are close to the colors of ultraluminous infrared galaxies, and thus indicative of heavy obscuration. The 6-12 mu m spectra are dominated by emission features of polycyclic aromatic hydrocarbon molecules at 6.2, 7.7, and 8.6 mu m. This demonstrates the existence of dust-enshrouded starbursts in those galaxies. Based on observations with the Infrared Space Observatory, an ESA project with instruments funded by ESA Member States (especially the PI countries: France, Germany, the Netherlands, and the United Kingdom) with the participation of ISAS and NASA.

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