A search for hydrogenated fullerenes in fullerene-containing planetary nebulae

Abstract

Detections of C60 and C70 fullerenes in planetary nebulae (PNe) of the Magellanic Clouds and of our own Galaxy have raised the idea that other forms of carbon such as hydrogenated fullerenes (fulleranes like C60H36 and C60H18), buckyonions, and carbon nanotubes, may be widespread in the Universe. Here we present VLT/ISAAC spectra (R ~600) in the 2.9-4.1 microns spectral region for the Galactic PNe Tc 1 and M 1-20, which have been used to search for fullerene-based molecules in their fullerene-rich circumstellar environments. We report the non-detection of the most intense infrared bands of several fulleranes around ~3.4-3.6 microns in both PNe. We conclude that if fulleranes are present in the fullerene-containing circumstellar environments of these PNe, then they seem to be by far less abundant than C60 and C70. Our non-detections together with the (tentative) fulleranes detection in the proto-PN IRAS 01005+7910 suggest that fulleranes may be formed in the short transition phase between AGB stars and PNe but they are quickly destroyed by the UV radiation field from the central star.

arXiv commentAccepted for publication in Astronomy & Astrophysics (7 pages, 3 figures, and 3 Tables)

References in corpus (22)

• C${}_{60}$ in Reflection Nebulae
• The Composition and Distribution of Dust Along the Line of Sight Towards the Galactic Center
• Formation of fullerenes in H-containing Planetary Nebulae
• The formation of fullerenes: clues from new C60, C70, and (possible) planar C24 detections in Magellanic Cloud Planetary Nebulae
• Detection of C60 in the proto-planetary nebula IRAS 01005+7910
• Are C60 molecules detectable in circumstellar shells of R Coronae Borealis stars?
• Infrared Study of Fullerene Planetary Nebulae
• On the Excitation and Formation of Circumstellar Fullerenes
• Elemental abundances of Galactic bulge planetary nebulae from optical recombination lines
• Physical Properties of Fullerene-containing Galactic Planetary Nebulae
• The 15 - 20 Micron Spitzer Spectra of Interstellar Emission Features in NGC 7023
• The catalogue of radial velocity standard stars for Gaia I. Pre-launch release
• High-resolution IR absorption spectroscopy of polycyclic aromatic hydrocarbons: the realm of anharmonicity
• Radial velocities for the Hipparcos-Gaia Hundred-Thousand-Proper-Motion project
• Infrared spectroscopy of fullerene C60/anthracene adducts
• Excitation of the aromatic infrared emission bands: Chemical energy in hydrogenated amorphous carbon particles?
• Diffuse interstellar bands in fullerene planetary nebulae: the fullerenes - diffuse interstellar bands connection
• On the origin of the 11.3 micron unidentified infrared emission feature
• A search for diffuse bands in fullerene planetary nebulae: evidence of diffuse circumstellar bands
• Fullerenes and proto-fullerenes in interstellar carbon dust
• Independent Emission and Absorption Abundances for Planetary Nebulae
• A Survey of 3.3 Micron PAH Emission in Planetary Nebulae

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• Physical Conditions and Chemical Abundances of the Variable Planetary Nebula IC 4997
• On the formation of molecules and solid-state compounds from the AGB to the PN phases
• Study of fullerene-based molecular nanostructures in planetary nebulae