2016A&A...589A...5D


Query : 2016A&A...589A...5D

2016A&A...589A...5D - Astronomy and Astrophysics, volume 589A, 5-5 (2016/5-1)

A search for hydrogenated fullerenes in fullerene-containing planetary nebulae.

DIAZ-LUIS J.J., GARCIA-HERNANDEZ D.A., MANCHADO A. and CATALDO F.

Abstract (from CDS):

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 2.9-4.1µm 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 ∼3.4-3.6µm in both PNe. We conclude that if fulleranes are present in the fullerene-containing circumstellar environments of these PNe, then they seem to be much 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.

Abstract Copyright: © ESO, 2016

Journal keyword(s): astrochemistry - line: identification - circumstellar matter - molecular processes - stars: AGB and post-AGB - planetary nebulae: general

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 IRAS 01005+7910 pA* 01 04 45.5109702912 +79 26 46.357116648   11.04 10.87 10.85   B1.7Ibeq 73 0
2 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 6983 1
3 PN M 1-20 PN 17 28 57.6165015264 -19 15 54.033719256           ~ 128 0
4 PN Tc 1 PN 17 45 35.2879212240 -46 05 23.717122728   11.30 11.49     PCyg 261 0
5 HD 174153 PM* 18 51 19.7229853368 -44 28 32.504858760   8.06 7.55     F7V 57 0
6 * kap Aql * 19 36 53.4495162 -07 01 38.917563 4.050 4.930 4.960 4.90 4.94 B0.5IIIn 341 0

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