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The Nature of the Mid-Infrared Population from Optical Identifications of the ELAIS-S1 Sample
Pozzi, F.; Danese, L.; Alexander, D. M. +16 more
We present a multiwavelength catalog (15 µm, R-band, K-band, and 1.4 GHz flux) plus spectroscopic identifications for 406 15 µm sources detected in the European Large Area ISO Survey (ELAIS) region S1, over the flux density range 0.5<S15µm<150 mJy. Three hundred thirty-two (~82%) sources are optically identified …
CNO Abundances in Metal-Rich Environments: Infrared Space Observatory Spectroscopy of Ionized Gas in M51
Skillman, Evan D.; Garnett, Donald R.; Edmunds, Michael G. +2 more
We present Infrared Space Observatory (ISO) Long Wavelength Spectrograph observations centered on the H II region CCM 10 in the spiral galaxy M51. We detect several emission lines in this spectrum, including [O I] 63 and 145 µm, [C II] 158 µm, [O III] 88 µm, and [N II] 122 µm, with a significant upper limit on [N III] 57 &m…
Nuclear Stellar Populations in the Infrared Space Observatory Atlas of Bright Spiral Galaxies
Bendo, George J.; Joseph, Robert D.
To understand the nuclear stellar populations and star formation histories of the nuclei of spiral galaxies, we have obtained K-band nuclear spectra for 41 galaxies and H-band spectra for 20 galaxies in the Infrared Space Observatory's Atlas of Bright Spiral Galaxies. In the vast majority of the subsample (80%), the near-infrared spectra suggest t…
Mid- and Far-Infrared Infrared Space Observatory Limits on Dust Disks around Millisecond Pulsars
Lazio, T. Joseph W.; Fischer, J.
We report 60 and 90 µm observations of seven millisecond pulsars with the Infrared Space Observatory. The pulsar PSR B1257+12 is orbited by three planets, and other millisecond pulsars may be orbited by dust disks that represent planets that failed to form or their residue. We do not detect any infrared emission from the seven pulsars in our…
Faint 6.7 Micron Galaxies and Their Contributions to the Stellar Mass Density in the Universe
Matsuhara, Hideo; Cowie, Lennox L.; Taniguchi, Yoshiaki +6 more
We discuss the nature of faint 6.7 µm galaxies detected with the mid-infrared camera ISOCAM on board the Infrared Space Observatory (ISO). The 23 hr integration on the Hawaii Deep Field SSA13 has provided a sample of 65 sources down to 6 µJy at 6.7 µm. For 57 sources, optical or near-infrared counterparts were found using a stati…