Physics – Optics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sf2a.conf..479r&link_type=abstract
SF2A-2004: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 14-18, 2004. Edited by F. Combes, D. Barret
Physics
Optics
1
Scientific paper
We present recent Adaptive Optics images in Ks, L and M bands of NGC 1068, obtained with NAOS-CONICA on VLT. The very peculiar structure of four parallel elongated nodules unveiled by deconvolution underlines a strong correlation with the radio jet which appears as a major actor to shape the NLR. We the Ks-L and L-M color ratio reveal dust at a very high temperature (about 500-600 K) up to 70 pc north of the nucleus. We explore several mechanisms to explain the color temperature. We favour the transient heating of Very Small Grains as the most efficient process to produce high color temperature. Since nano-diamonds are preferentially formed in UV field or in shocks, and that they reproduce nicely the observed color temperature, we propose that they indeed represent a major component of the VSG population.
Clenet Yann
Gendron Eric
Gratadour Damien
Rouan Daniel
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