Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-02-14
Astronomy and Astrophysics
Astrophysics
10 pages, 13 figures. To appear in A&A
Scientific paper
We present mid-infrared spectro-imagery and high-resolution spectroscopy of the Orion bar and of a region in the Orion nebula. These observations have been obtained in the Guaranteed Time with the Circular Variable Filters of the ISO camera (CAM-CVF) and with the Short Wavelength Spectrometer (SWS), on board the European Infrared Space Observatory (ISO). Our data shows emission from amorphous silicate grains from the entire HII region and around the isolated O9.5V star Theta2 Ori A. The observed spectra can be reproduced by a mixture of interstellar silicate and carbon grains heated by the radiation of the hot stars present in the region. Crystalline silicates are also observed in the Orion nebula and suspected around Theta2 Ori A. They are probably of interstellar origin. The ionization structure and the distribution of the carriers of the Aromatic Infrared Bands (AIBs) are briefly discussed on the basis of the ISO observations.
Cesarsky D.
Jones Adrian P.
Lequeux James
Verstraete Laurent
No associations
LandOfFree
Silicate emission in Orion does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Silicate emission in Orion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silicate emission in Orion will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-366733