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Spectral Irradiance Calibration in the Infrared. X. A Self-Consistent Radiometric All-Sky Network of Absolutely Calibrated Stellar Spectra
Noguchi, Kunio; Cohen, Martin; Walker, Russell G. +3 more
We start from our six absolutely calibrated continuous stellar spectra from 1.2 to 35 µm for K0, K1.5, K3, K5, and M0 giants. These were constructed as far as possible from actual observed spectral fragments taken from the ground, the Kuiper Airborne Observatory, and the IRAS Low Resolution Spectrometer, and all have a common calibration ped…
A Large Mid-Infrared Spectroscopic and Near-Infrared Imaging Survey of Ultraluminous Infrared Galaxies: Their Nature and Evolution
Lutz, D.; Genzel, R.; Rigopoulou, D. +3 more
We present a low-resolution mid-infrared spectroscopic survey of an unbiased sample of 62 ultraluminous infrared galaxies (ULIRGs) (LIR>1012Lsolar, z<=0.3) using ISOPHOT-S on board the Infrared Space Observatory (ISO). For comparison, we also present ISOPHOT-S spectra for 23 active galactic nuclei (AGNs) and …
Dust in Spiral Galaxies: Comparing Emission and Absorption to Constrain Small-Scale and Very Cold Structures
Ryder, Stuart D.; White, Raymond E., III; Keel, William C. +1 more
The detailed distribution of dust in the disks of spiral galaxies is important to understanding the radiative transfer within disks and to measuring overall dust masses if significant quantities of dust are either very opaque or very cold. We address this issue by comparing measures of dust absorption, using the galaxy-overlap technique in the opt…
High-Resolution Millimeter and Infrared Observations of the Hot Spots of Cygnus A
Miley, G. K.; Carilli, C. L.; Kurk, J. D. +2 more
We present high-resolution, polarimetric imaging of the radio hot spots of Cygnus A at 7 mm with the Very Large Array and derive limits to hot spot emission at 12 µm with the Infrared Space Observatory (ISO). The 7 mm images reveal the hot spot structure in total and polarized intensity in unprecedented detail, including images of the projec…
Deep Near-Infrared Images and ISOCAM Observations of Chamaeleon I North
Olofsson, G.; Roth, M.; Nordh, L. +3 more
We present the results of deep near-infrared imaging and ISOCAM observations of three selected regions localized in the northern part of the Chamaeleon I dark cloud, in order to search for the low-luminosity population. In an area of 3x3 arcmin^2 centered on the bipolar molecular outflow, which is the densest part of the cloud, we have discovered …
Toward an Understanding of the Mid-Infrared Surface Brightness of Normal Galaxies
Dale, Daniel A.; Rubin, Robert H.; Malhotra, Sangeeta +3 more
We report a mid-infrared color and surface brightness analysis of IC 10, NGC 1313, and NGC 6946, three of the nearby galaxies studied under the Infrared Space Observatory Key Project on Normal Galaxies. Images with less than 9" (170 pc) resolution of these nearly face-on, late-type galaxies were obtained using the LW2 (6.75 µm) and LW3 (15 &…
A Near- and Mid-Infrared Study of the Interacting Galaxy Pair UGC 12914/12915: ``Taffy''
Helou, G.; Condon, J. J.; Jarrett, T. H. +2 more
We report on an infrared 1 to 17 µm study of the nearby (cz=4600 km s-1) interacting spiral galaxy system UGC 12914/12915, using the ground-based Palomar 200 inch (5 m) telescope and PFIRCAM near-infrared detector and space-based mid-infrared imaging and spectral observations using ISOCAM and PHT-S on the Infrared Space Observator…
ISOCAM 15 Micron Search for Distant Infrared Galaxies Lensed by Clusters
Helou, George; Antonucci, Robert; Barvainis, Richard
In a search for lensed infrared galaxies, ISOCAM images have been obtained toward the rich clusters Abell 2218 and Abell 2219 at 15 mum. Nine galaxies (four in Abell 2218 and five in Abell 2219) were detected with flux levels in the range 530-1100 muJy. Three of the galaxies detected in Abell 2218 have previously known redshifts; of these one is a…