Mid-infrared spectroscopy of obscured IRAS galaxies *
Hideaki Mouri 1,
Yoshiaki Taniguchi 2,
Yasunori Sato 3, 4 and
Kimiaki Kawara 5
Received 6 January 1998 / Accepted 24 February 1998
Spectra from 6 to 12 µm are presented for the infrared galaxies NGC 1266, Arp 148, and IRAS 1713+53. Though they are not markedly luminous (), their IRAS colors are close to the colors of ultraluminous infrared galaxies, and thus indicative of heavy obscuration. The 6-12 µm spectra are dominated by emission features of polycyclic aromatic hydrocarbon molecules at 6.2, 7.7, and 8.6 µm. This demonstrates the existence of dust-enshrouded starbursts in those galaxies.
Key words: galaxies: ISM galaxies: starburst infrared: galaxies infrared: ISM: lines and bands
* 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.
Send offprint requests to: H. Mouri, (firstname.lastname@example.org)
© European Southern Observatory (ESO) 1998
Online publication: May 15, 1998