Search Publications
Far-Infrared and Submillimeter Emission from Galactic and Extragalactic Photodissociation Regions
Wolfire, Mark G.; Kaufman, Michael J.; Hollenbach, David J. +1 more
Photodissociation region (PDR) models are computed over a wide range of physical conditions, from those appropriate to giant molecular clouds illuminated by the interstellar radiation field to the conditions experienced by circumstellar disks very close to hot massive stars. These models use the most up-to-date values of atomic and molecular data,…
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 …
15 Micron Infrared Space Observatory Observations of the 1415+52 Canada-France Redshift Survey Field: The Cosmic Star Formation Rate as Derived from Deep Ultraviolet, Optical, Mid-Infrared, and Radio Photometry
Omont, A.; Eales, S.; Thuan, T. X. +7 more
The Canada-France Redshift Survey 1452+52 field has been deeply imaged with the Infrared Space Observatory using ISOCAM through the LW3 filter (12-18 µm). Careful data analysis and comparison with deep optical and radio data have allowed us to generate a catalog of 78 15 µm sources with both radio and optical identifications. They are …
Observations of Solid Carbon Dioxide in Molecular Clouds with the Infrared Space Observatory
de Graauw, Th.; Prusti, T.; van Dishoeck, E. F. +8 more
Spectra of interstellar CO2 ice absorption features at a resolving power of λ/Δλ~1500-2000 are presented for 14 lines of sight. The observations were made with the Short-Wavelength Spectrometer (SWS) of the Infrared Space Observatory (ISO). Spectral coverage includes the primary stretching mode of CO2 near 4.27 µm in al…
Source counts from the 15 mu m ISOCAM Deep Surveys
Aussel, H.; Elbaz, D.; Clements, D. L. +11 more
We present the results of the five mid-IR 15 mu m (12-18 mu m LW3 band) ISOCAM Guaranteed Time Extragalactic Surveys performed in the regions of the Lockman Hole and Marano Field. The roughly 1000 sources detected, 600 of which have a flux above the 80% completeness limit, guarantee a very high statistical significance for the integral and differe…
ISOCAM observations of the Hubble Deep Field reduced with the PRETI method
Aussel, H.; Elbaz, D.; Cesarsky, C. J. +1 more
We have developed a new ISOCAM data reduction technique based on wavelet analysis, especially designed for the detection of faint sources in mid-infrared surveys. This method, the Pattern REcognition Technique for Isocam data (PRETI) has been used to reduce the observations of the Hubble Deep Field (HDF) and flanking fields with ISOCAM at 6.75 (LW…
Mass-loss rates and luminosity functions of dust-enshrouded AGB stars and red supergiants in the LMC
Waters, L. B. F. M.; van Loon, J. Th.; Loup, C. +5 more
A radiative transfer code is used to model the spectral energy distributions of 57 mass-losing Asymptotic Giant Branch (AGB) stars and red supergiants (RSGs) in the Large Magellanic Cloud (LMC) for which ISO spectroscopic and photometric data are available. As a result we derive mass-loss rates and bolometric luminosities. A gap in the luminosity …
Silicate Mineralogy of the Dust in the Inner Coma of Comet C/1995 01 (Hale-Bopp) Pre- and Postperihelion
Woodward, Charles E.; Koike, Chiyoe; Witteborn, Fred C. +4 more
We present 7.5-13.4 µm infrared (IR) spectrophotometry (R~=180-360) of the 10 µm silicate emission from dust in the inner coma (i.e., within a diameter of 3") of comet C/1995 O1 (Hale-Bopp) at four temporal epochs from 1996 October through 1997 June during Hale-Bopp's approach to, arrival at, and recession from perihelion. Hale-Bopp's …
Weak ice absorption features at 7.24 and 7.41 MU M in the spectrum of the obscured young stellar object W 33A
de Graauw, Th.; van Dishoeck, E. F.; Whittet, D. C. B. +7 more
ISO-SWS observations of the highly obscured young stellar object W 33A reveal two broad absorption features centered at 7.24 and 7.41 mu m. Comparison to interstellar ice analogs shows that the 7.24 mu m band can be well matched by the CH deformation mode of formic acid (HCOOH), while the 7.41 mu m band can be fitted both by the formate ion (HCOO(…