Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...201l...1g&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 201, no. 1, July 1988, p. L1-L4. CNES-supported research.
Astronomy and Astrophysics
Astronomy
86
Aromatic Compounds, Cyclic Hydrocarbons, Diffuse Radiation, Galactic Radiation, Infrared Astronomy, Interstellar Matter, Astronomical Photometry, Astronomical Spectroscopy, Brightness Distribution, Milky Way Galaxy
Scientific paper
The presence of the 3.3-micron feature in the diffuse Galactic emission has been demonstrated by spectrophotometric data obtained with the balloon-borne instrument AROME. It uses two photometric bands, a narrow one and a wide one, both centered at 3.3-microns. This emission feature is present at all Galactic longitudes in the range l = 8.5 - 35 deg and shows maxima in the directions tangent to spiral arms. The energy emitted in the feature above the continuum and averaged over this longitude range is (9.7 + or - 0.5) x 10 to the -8th W/sq m sr. This observation is the second check of the predictions made by the interstellar grain model of Puget et al. (1985), which includes large Polycyclic aromatic hydrocarbon molecules in addition to classical bigger grains.
Caux Emmanuel
Giard Martin
Lamarre Jean-Michel
Pajot François
Serra Giampaolo
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