Light on Dark Matter

'Light on Dark Matter', held from 10-14 June 1985 in the Dutch seaside resort of Noordwijk, was the first international conference devoted to the results of the all-sky survey by the US-Dutch-UK Infra-Red Astronomical Satellite (IRAS). As such, it was a hommage to the scientists, engineers and technicians who conceived, built and operated this extremely successful satellite. That this was generally felt to be the case, was proven by the large number of participants (over 200 from seventeen different nations), the li vely discussions, and the great variety of topics presented during the meeting. All this not withstanding a typical Dutch summer: gale-force winds, heavy cloud cover, and meter-high surf crashing onto a beach on which only the hardy ventur. ed. Most participants contented themselves by watching the lonely seagulls patrolling the North Sea coastline through the panoramic windows of the conference center. Parallel to the IRAS Conference, a Workshop on Infrared Properties of Interstellar Grains was organized by J. M. Greenberg of the Leiden Laboratory Astrophysics Group: a busy shuttling of participants between the Workshop room and the Main Conference Hall showed that many found it hard to choose. A large number of people were invol ved in making the Conference a success: in the first place the scientific organizers with their valuable advice and the conference speakers, among which I would like to mention Dr. J. H.

Inhalt

Section 1. The IRAS Survey.- A Statistical Analysis and Overview of the IRAS Point Source Catalog (IR).- Semi-Automated Identification of IRAS Point Sources Using UKST Plates and the Cosmos Measuring Machine.- Submm Continuum Observations of Sources from the I R A S Point-Source Catalogue.- A Statistical Analysis of the LRS Catalog (IR).- The Zodiacal Background in the IRAS Data (IR).- Heliocentric Dependences of Zodiacal Emission, Temperature and Albedo.- Spectral Decomposition of IRAS Maps.- Observations of Infrared Cirrus (IR).- Dust at the North Galactic Pole.- Section 2. Stars and Stellar Phenomena.- IRAS Observations of Cool Excess around Main Sequence Stars (IR).- The Flux Distribution of Vega for 10 µm < ? < 100 µm, and the Calibration of IRAS at 12 µm and 25 µm.- A Search for Infrared Excesses in G-Type Stars.- IRAS Intrinsic Colours of Hot Stars.- The Infared Excess from Stellar Winds.- The Disc Structure and Mass Loss Rates of Be Stars.- IRAS Observations of Wolf-Rayet Stars.- Dust Formation in Wolf-Rayet Stellar Winds (W).- Observations of Young (Orion-Type) Stars with IRAS.- Mass Loss by Cool Stars (IR).- Models of IRAS Observation of Circumstellar Shells.- Luminosities of OH/IR Stars.- OH/IR Catalogue and Correlation with the IRAS Data Base.- AGB Stars with High Mass Loss Rates in the Bulge of Our Galxy.- The Circumstellar Envelope of VX Sagittarii.- The Internal Radius of CS Shells around Cool, Oxygen-rich Stars (W).- IRAS Observations of Carbon Stars.- From Miras to Planetary Nebulae: a Model of Mass Loss (IR).- Ground-based and IRAS Observations of Proto-planetary Nebulae.- Spectra of Some IRAS Sources.- IRAS Measurements of Planetary Nebulae (IR).- IR Obserevations of An Extended Planetary Nebula: NGC 7293 - the Helix Nebula.- Novae Detected in the IRAS Point Source Catalog.- IRAS Observations of Classical Novae.- Collisional Heating of Dust in the 1985 Outburst of RS Ophiuchi.- Infared Observations of Tycho Using IRAS.- Shock-Heated Dust in Young Supernova Remnants.- Section 3. Dust Grains and Their Properties.- Grains, What Do We Know? (IR).- IRAS Cirrus Observations and the Nature of Dust (IR).- Dust in Diffuse Clouds: One Stage in a Cycle.- Infrared Extinction in Molecular Clouds: the Form of the Curve in Orion.- UV Extinction as a Key to Grain Optical Properties in the IR and UV.- The Wavelength of Maximum Polarization in the Chamaeleon Dark Cloud (W).- Three Principal Heating Sources of Dust in the Galactic Disk.- Mid-IR Emission of the Interstellar Medium (W).- Optical Luminescence from Reflection Nebulae? (W).- Infrared Spectra and Dust Temperature Fluctuations (W).- Non-equilibrium Emission from Small Particles (W).- Evidence for a 12 Micron Water-ice Absorption Band in the IRAS LRS Spectra of Protostars and Late Type Stars.- S2 Formation in Interstellar Dust; a Diagnostic of the Maximum Aggregation Temperature for a comet (W).- Formation of Organic Molecules on Interstellar Dust Particles (W).- Polycyclic Aromatic Hydrocarbons and the Diffuse Interstellar Bands (W).- Identification of Polycyclic Aromatic Hydrocarbons (W).- Silicate Absorption Strength; Polarized Emission and Absorption by Aligned Grains (W).- Optical Properties of Simulated Astrophysical Grains and Their Dynamics in the Near-earth Environment.- Ultraviolet Photoprocessing and Infrared Spectroscopy of Laboratory Simulated Grain Mantles (W).- Radiation Effects on Grain Materials (W).- Reflection Nebulae, Non-equilibrium Thermal Emission, and IRAS.- Section 4. Interstellar Medium and Star Formation.- Theories of Star Formation Confronted by IRAS Data (IR).- IMF in Starburst Regions.- Point Sources in the Orion Complex (IR).- The IR Emission of the Orion-Monoceros Molecular Clouds.- Young Stars and High Density Condensations in the Horsehead Region.- Mapping of the Coronae Austrinae Star Forming Region.- Analysis of Point Sources in the Ophiuchus and Perseus Clouds and CPC Observations NGC 1333.- Star Forming Loops in the IRAS Sky Images.- Models for IRAS Observations of Galactic HII Regions.- Far-infrared (100-200 µm) Photometry of HII Regions with a 1m Balloon Borne Telescope.- Young Star and Dense Cores in Nearby Dark Clouds (IR).- Water Masers Coincident with IRAS Sources.- IR CCD Imaging og L1551-IRS 5: Direct Observations of Its Circumstellar Shell.- A Model for Bipolar Sources in Molecular Clouds.- Comparison of CO and IR Emission of IRAS Unidentified Sources.- IRAS Obervations of Symbiotic Objects.- A Large Scale OH Survey in Orion and Monoceros.- Section 5. Galactic Bulge and Galctic Structure.- The Galactic Distribution of Stellar Sources Found by IRAS (IR).- Variables, the Galactic Bulge and IRAS (IR).- Ground Based Observation of Nuclear Bulge Stars (IR).- The Galctic Morphology of the Interstellar Dust Detected by IRAS (IR).- The Association of Clouds in the Carina Arm with IRAS Spline Maps.- Dark Cloud Statistics.- High Latitude Molecular Clouds: Completeness of the Survey and Implications for Molecular Surveys.- Dust in High Velocity Clouds.- Section 6. Galaxies.- IRAS Observations of the Magellanic Clouds.- Collisionally Heated Dust in LMC Supernova Remnants.- Groundbased Infrared Observations of Magellanic Cloud HII Regions.- Dust in M31 - Observations in the IR.- Statistical Properties of IRAS Galaxies (IR).- Infrared Radiation from Normal Galaxies (IR).- Models for IRAS Galaxies.- The Identification of IRAS Galaxies (IR).- Mid Infrared Spectroscopy of IRAS Bright Galaxies.- The Relationship between Blue and Fir Luminosities of Spiral Galaxies.- Preliminary Results of an HI Survey of a sample of IRAS Galaxies.- Far-infrared Properties of Mulitiple Nucleus Galaxies.- Young Supernovae in the Starburst Galaxy M82.- The Amazing Tail of NGC 2146.- Starburst in the Nuclei of Interacting and Merging Galaxies (IR).- Starburst in Non-interacting Galaxies (IR).- New Ground-based Studies of Two Active IRAS Galaxies.- Spectroscopy of Active and Starburst Galaxies between 8-13 µm (W).- IRAS Observations of Active Galaxies - a Review (IR).- Seyfert Galaxies in the IRAS Survey and JHKL Photometry.- The Most Luminous Galaxies.- Submillimetre to Infrared Observations of Active Galaxies.- Active Galactic Nuclei in the IRAS PSC.- Section 7. Cosmology.- Cosmological Results from IRAS (IR).- Evidence from IRAS Data for Large-scale Anisotropy in the Hubble Flow.- Summing-Up.- Astronomy after IRAS (IR).- Indices.- Object Index.- Author Index.