Probing the bottom end of the IMF in orion with Gemini
We present very deep JHK imaging of the Trapezium Cluster obtained with Gemini South/Flamingos and Gemini North/Hokupa'a. These images probe the IMF down to similar to 2 M-Jup in a total area of similar to 8 arcmin(2). Several very faint new planetary mass candidates are detected and sources pr...
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| Format: | Conference item |
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2003
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| Sažetak: | We present very deep JHK imaging of the Trapezium Cluster obtained with Gemini South/Flamingos and Gemini North/Hokupa'a. These images probe the IMF down to similar to 2 M-Jup in a total area of similar to 8 arcmin(2). Several very faint new planetary mass candidates are detected and sources previously detected with UKIRT are verified. Photometry of 124 point sources in this field produces a Luminosity Function which. drops to zero at K=18.75. Allowing. for modest extinction this corresponds to a possible turn-down in the IMF near 5 Mjup. A minority of PMOs exhibit large K band excesses attributed to hot dust, confirming their extreme youth. Some of the faintest sources are associated with short trails of light of uncertain nature. These may provide a clue to the origin of PMOs, perhaps marking evacuated paths cleared by rapidly moving objects. |
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