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Article
Open AccessSample return of primitive matter from the outer Solar System
The last thirty years of cosmochemistry and planetary science have shown that one major Solar System reservoir is vastly undersampled in the available suite of extra-terrestrial materials, namely small bodies ...
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Chapter and Conference Paper
Ices in Star-Forming Regions: First Results from VLT-ISAAC
The first results from a VLT-ISAAC program on the infrared spectroscopy of deeply-embedded young stellar objects are presented. The advent of 8-m class telescopes allows high S/N spectra of low-luminosity sources...
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Chapter and Conference Paper
Ices in Star-Forming Regions: First Results from VLT-ISAAC
The first results from a VLT-ISAAC program on the infrared spectroscopy of deeply-embedded young stellar objects are presented. The advent of 8-m class telescopes allows high S/N spectra of low-luminosity sources...
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Chapter
Molecular Gas Phase Counterparts to Solid State Grain Mantle Features
ISO SWS (AOT6) observations of a protostellar object RAFGL 7009S are presented. This source is extremely promising for the chemistry arising from grain surfaces and mantles, since many solid state features of ...
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Article
The project “spice”
Proposed to both the French and the European Space Agency as one possible small mission, SPICE is a project for a dedicated small satellite for a near-IR spectroscopic all-sky survey. The instrument would cove...
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Chapter and Conference Paper
The Project “spice”
Proposed to both the French and the European Space Agency as one possible small mission, SPICE is a project for a dedicated small satellite for a near-IR spectroscopic all-sky survey. The instrument would cove...
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Chapter and Conference Paper
Search for the 4430 Å DIB in the Spectrum of Coronene
Polycyclic Aromatic Hydrocarbon (PAH) molecules have been proposed as candidates to explain the Diffuse Interstellar Bands (DIBs). We have performed laboratory measurements of coronene, using rare gas matrix i...
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Chapter and Conference Paper
Interstellar and Meteoritic Organic Matter At 3.4 μm
The 3 micron spectrum of the galactic center source IRS 7 is compared to a spectrum obtained on the deuterium-rich organic polymer extracted from the Orgueil carbonaceous meteorite. The almost perfect match be...
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Chapter and Conference Paper
On the Possible Detection of Solid O2 in Interstellar Grains
In various models of the chemistry of interstellar grains, solid O2 is formed by accretion as well as by surface reactions. In dense molecular cloud models, at a later stage of evolution of an interstellar grain,...
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Article
From interstellar matter to comets: Elemental abundances in interstellar dust and in comet Halley
Analogies between interstellar and cometary matter can be found in their chemical compositions, both in the gaseous and solid phases, but also in the physical processes involved like evidence for ion-molecules...
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Chapter and Conference Paper
PAHs: Very abundant organic molecules in the interstellar medium
The presence of Polycyclic Aromatic Hydrocarbons (PAHs) in the interstellar gas has been proposed recently on the basis of a suggestive resemblance between the set of observed IR emission lines (3.3, 6.2, 7.7,...
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Chapter
Small Grains and Large Aromatic Molecules
Recently, the interpretation of the so-called “unidentified” infrared emission bands has drastically improved. These bands are attributed to the fundamental vibrations of large molecules known in organic chemi...
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Article
Detection of diffuse interstellar bands in the infrared
THE diffuse interstellar bands (DIBs) are spectral absorption features caused by interstellar matter but not identified with any known atomic or molecular lines. Since 1975, when 39 such bands were known1, many m...
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Chapter and Conference Paper
The PAH Hypothesis and the Extinction Curve
The Polycyclic Aromatic Hydrocarbon (PAH) hypothesis states that a mixture of free PAH molecules is an ubiquitous and abundant component of the interstellar matter. It has been first formulated by Léger and Puget...
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Book
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Chapter
Objectives of the Workshop
Although we do expect that this workshop will bring more questions than solutions, we try here to define schematically what are the main topics that could possibly be covered at this meeting.
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Chapter
Identification of PAHs in Astronomical IR Spectra- Implications
We propose a consistent explanation of the so-called “unidentified” IR emission bands of the Interstellar Medium observed at 3.3 - 6.2 - 7.7 - 8.6 - 11.3 μm. Following Sellgren (1984), we consider the transien...
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Chapter and Conference Paper
Identification of Polycyclic Aromatic Hydrocarbons
The nature of the Very Small Grains evidenced by K. Sellgren (1985) is discussed. Their stability suggests that they are graphitic material and specifically Polycyclic Aromatic Hydrocarbons (PAHs). The expecte...
