Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002apj...576l.117e&link_type=abstract
The Astrophysical Journal, Volume 576, Issue 2, pp. L117-L120.
Astronomy and Astrophysics
Astronomy
29
Galaxies: Ism, Ism: Lines And Bands, Ism: Molecules, Galaxies: Magellanic Clouds
Scientific paper
With the Ultraviolet Visual Echelle Spectrograph mounted at the Very Large Telescope, we have observed at unprecedented spectral resolution the absorption spectrum toward reddened stars in the Magellanic Clouds over the wavelength range of 3500-10500 Å. This range covers the strong transitions associated with neutral and charged large carbon molecules of varying sizes and structures. We report the first detection of diffuse interstellar bands (DIBs) at 5780 and 5797 Å in the Small Magellanic Cloud and the variation of the 6284 Å DIB toward several targets in the Large Magellanic Cloud. The variation of DIBs in the Magellanic Clouds compared with Galactic targets may be governed by a combination of the different chemical processes prevailing in low-metallicity regions and the local environmental conditions. Based on observations made at the European Southern Observatory, Paranal, Chile (ESO program 67.C-0281).
Cami Jan
Cox Nagin
d'Hendecourt Louis
Ehrenfreund Pascale
Foing Bernard H.
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