Letter to the Editor
ISOCAM images of the `elephant trunks' in M 16 *
Received 13 November 1997 / Accepted 24 February 1998
We have used ISOCAM to obtain images of the `elephant trunks' in the M 16 `Eagle nebula' in the two broadband filters LW2 (5-8.5 µm) and LW3 (12-18 µm). These pillars are clearly seen in both our filters, their emission has a colour temperature in the range 250-320 K.
We have also detected bright extended emission in the LW3 filter, in an area outside the `elephant trunks', and with no LW2 counterpart.
We report the detection of a deeply embedded source, presumably connected with M16-E31, which we identify as a YSO. However, to our levels of angular resolution and sensitivity we cannot, in general, correlate discrete sources with the EGGs discovered by the HST. Our observations are consistent with a relatively low level of ongoing low-mass star formation, a fact which may be related to disk disruption taking place at early times in M 16.
Key words: Stars: formation ISM: clouds ISM: individual objects: M 16 Infrared: ISM: continuum
* Based on observations with ISO, an ESA project with instruments funded by ESA Member States (especially the PI countries: France, Germany, the Netherlands and the United Kingdom) with the participation of ISAS and NASA.
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© European Southern Observatory (ESO) 1998
Online publication: April 15, 1998