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Dust Temperatures in the Infrared Space Observatory Atlas of Bright Spiral Galaxies
Bendo, George J.; Leech, Kieron; Metcalfe, Leo +11 more
We examine far-infrared and submillimeter spectral energy distributions for galaxies in the Infrared Space Observatory Atlas of Bright Spiral Galaxies. For the 71 galaxies where we had complete 60-180 µm data, we fitted blackbodies with λ-1 emissivities and average temperatures of 31 K or λ-2 emissivities and average te…
Multiwavelength Insights into Mixed-Morphology Binary Galaxies. I. ISOCAM, ISOPHOT, and Hα Imaging
Rampazzo, Roberto; Xu, Cong; Gao, Yu +3 more
We present Hα and ISO mid- and far-IR observations for a sample of mixed-morphology galaxy pairs that reveal both the stellar and nonstellar signatures of the interaction process. A mixed-morphology pair is perhaps the simplest form of galaxy-galaxy interaction because it is expected to involve only a single rapidly rotating gas-rich component pai…
Infrared Space Observatory and Ground-Based Infrared Observations of the Classical Nova V723 Cassiopeiae
Hayward, T. L.; Gehrz, R. D.; Eyres, S. P. S. +13 more
We present observations of the classical nova V723 Cassiopeiae (Nova Cas 1995), obtained both with the Infrared Space Observatory (ISO) and from the ground. The infrared spectrum was dominated in the first year by H and He recombination lines, and at later times by coronal lines. The H recombination lines imply a reddening of E(B-V)=0.78, an elect…
Abundance Anomalies in CP Crucis (Nova Crux 1996)
Lumsden, S. L.; Krautter, Joachim; Gehrz, R. D. +15 more
We present spectroscopic observations of the classical nova CP Crucis (Nova Crux 1996) obtained with the Infrared Space Observatory Short Wavelength Spectrometer (ISO SWS) and the Anglo-Australian Telescope using both the Infrared Imaging Spectrograph and the Royal Greenwich Observatory Spectrograph. From the expansion parallax, we find that CP Cr…
The Dusty Environment of Quasars: Far-Infrared Properties of Optical Quasars
Grazian, Andrea; La Franca, Fabio; Cristiani, Stefano +2 more
We present Infrared Space Observatory (ISO) far-IR photometry of a complete subsample of optically selected bright quasars belonging to two complete surveys selected through multicolor (U, B, V, R, I) techniques. The ISOPHOT camera on board the ISO satellite was used to target these quasars at wavelengths of 7.3, 11.5, 60, 100, and 160 µm. A…
Radio-selected Galaxies in Very Rich Clusters at z<=0.25. II. Radio Properties and Analysis
Owen, Frazer N.; Morrison, Glenn E.
We report on the properties of radio-selected galaxies within 30 very rich Abell clusters with z<~0.25. The radio, optical, and X-ray data for these clusters were presented in Paper I. These radio data sample the ultrafaint (L1.4>=2×1022 W Hz-1) radio galaxy population with MR<=-21 using the wel…
870 Micron Observations of Nearby 3CRR Radio Galaxies
Quillen, A. C.; Yukita, Mihoko; Almog, Jessica
We present submillimeter continuum observations at 870 µm of the cores of low-redshift 3CRR radio galaxies, observed at the Heinrich Hertz Submillimeter Telescope. The cores are nearly flat-spectrum between the radio and submillimeter, which implies that the submillimeter continuum is likely to be synchrotron emission and not thermal emissio…
Physical Conditions in the O++ Zone from ISO and HST Data: NGC 6543 Revisited
Luridiana, V.; Cerviño, M.; Pérez, E.
We revise the physical conditions in the O++ zone of the planetary nebula NGC 6543, obtaining two different estimates of the electron temperature (Te) and one estimate of the electron density (Ne). The electron temperature is computed by means of two independent methods, the nebular-to-auroral ratio [O III] λ5007/λ…