Small-scale dust continuum structure in the Ophiuchi cloud cores

F.Motte , P.André , R.Neri , A.Abergel
Service d'Astrophysique, CEA/DSM/DAPNIA, Centre d'Etudes de Saclay, F-91191 Gif-sur-Yvette Cedex, France
Institut de RadioAstronomie Millimétrique, 300 rue de la Piscine, F-38406 Saint Martin d'Hères, France
Institut d'Astrophysique Spatiale, Université Paris-Sud, F-91405 Orsay, France
Abstract: We summarize the results of an extensive 1.3mm continuum mapping study of the Ophiuchi main cloud obtained with the IRAM 30m telescope equipped with the MPIfR 19-channel bolometer array. The mosaiced field covers about 1pc with enough sensitivity to probe, for the first time, cloud cores, star-less clumps, and circumstellar envelopes/disks simultaneously. A comparison with the ISOCAM 6.75 m and 15 m images of Oph obtained as part of the ISO central programme survey by Nordh, Olofsson et al.\ is presented. There is a good correspondence between the cores/clumps detected in emission at 1.3mm and the dark absorption structures seen in the ISOCAM images.
To appear in ``Star Formation with ISO'', Proc.Lisbon Meeting, June 1997