This article has an erratum: [https://doi.org/10.1051/0004-6361:20010702]
Volume 368, Number 3, March IV 2001
|Page(s)||L13 - L16|
|Published online||15 March 2001|
Disks around hot stars in the Trifid nebula
Laboratoire d'Astrophysique de l'Observatoire de Grenoble, BP 53, 38041 Grenoble Cedex, France
2 Consejo Superior de Investigaciones Científicas, Instituto de Estructura de la Materia, Serrano 123, 28006 Madrid, Spain
3 Max-Planck Institut für Extraterrestrische Physik, 85741 Garching, Germany
4 Institut d'Astrophysique Spatiale, Bât. 121, Université Paris XI, 91405 Orsay Cedex, France
5 Instituto de Astronomía, UNAM, Campus Morelia, A.P. 3-72, Morelia, Mich. 58089, México
Corresponding author: B. Lefloch, email@example.com
Accepted: 21 January 2001
We report on mid-IR observations of the central region in the Trifid nebula, carried out with ISOCAM in several broad-band infrared filters and in the low resolution spectroscopic mode provided by the circular variable filter. Analysis of the emission indicates the presence of a hot dust component (500 to 1000 K) and a warm dust component at lower temperatures (~ K) around several members of the cluster exciting the H II region, and other stars undetected at optical wavelengths. Complementary VLA observations suggest that the mid-IR emission could arise from a dust cocoon or a circumstellar disk, evaporated under the ionization of the central source and the exciting star of the nebula. In several sources the silicate band is seen in emission. One young stellar source shows indications of crystalline silicates in the circumstellar dust.
Key words: (ISM:) dust, extinction / (ISM:) H II regions / ISM: individual: Trifid / stars: formation
© ESO, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.