Infrared photometry of compact objects in the Magellanic Clouds

Astronomy and Astrophysics – Astronomy

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Infrared Photometry, Magellanic Clouds, Planetary Nebulae, Color-Color Diagram, Infrared Astronomy Satellite, Star Formation, Stellar Radiation

Scientific paper

The results of JHK (L-prime M) photometry of 34, mostly compact, objects in the Magellanic Clouds are presented. At JHK, slightly less than half are dominated by stellar emission or are in fact stars. The planetary nebula N 145 (LMC) was also observed. Comparison with IRAS observations shows that almost all optically compact nebulae are also compact at longer infrared wavelengths. IRAS 12-micrometer 'excess' emission is inversely correlated with hot and compact IR emission. Some compact objects, notably the nebula N 88 (SMC) show a rather extreme blue J - H color which needs further investigation. It is suggested that N 59-IRS and especially N 150 (LMC) are good candidates to search for traces of recent star formation. Results on the complexes N 159 (LMC), N 83/N 84, and N 88 (SMC) are briefly discussed.

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