ISO Observations of Compact HII Regions in the Large Magellanic Cloud
Abstract
We have obtained ISO spectroscopy and photometry of eight compact sources in the Magellanic Clouds which appear to be HII regions, but which present a number of peculiarities, such as the possible presence of instrinsically red stellar objects in some cases, or anomalously blue near infrared colors in others. The sources observed are N11A, N83B, N145, N159, and N160 in the LMC, N81 in the SMC, and a reference position near 30 Dor in the LMC. All sources with the exception of N81 and N145 show HII region-like 2 - 12 micron spectra, with PAH features and with [ArIII] and [SIV] emission, and rising energy distribution to the infrared. N81 was too faint for the detection of any spectral features, and N145 shows a rising energy distribution, no emission lines, and a 9.7 micron silicate absorption feature, suggesting the presence of a late-type photosphere. Details of the results will be presented at the meeting. These observations are part of the ISO Magellanic Cloud Guaranteed Time programme.
- Publication:
-
New Views of the Magellanic Clouds
- Pub Date:
- 1999
- Bibcode:
- 1999IAUS..190..377M