Far infrared observations of pre-protostellar sources in Lynds 183

Details Far infrared observations of pre-protostellar sources in Lynds 183 Far infrared observations of pre-protostellar sources in Lynds 183

2002-09-30

arxiv.org/abs/astro-ph/0209617v1

Astron.Astrophys. 398 (2003) 571-582

Astronomy and Astrophysics

Astrophysics

12 pages, 7 Postscript figures, 1 JPEG figure. Accepted for publication in Astronomy & Astrophysics

Scientific paper

10.1051/0004-6361:20021411

Using ISOPHOT maps at 100 and 200um and raster scans at 100, 120, 150 and 200um we have detected four unresolved far-infrared sources in the high latitude molecular cloud L183. Two of the sources are identified with 1.3mm continuum sources found by Ward-Thompson et al. and are located near the temperature minimum and the coincident column density maximum of dust distribution. For these two sources, the ISO observations have enabled us to derive temperatures (about 8.3 K) and masses (about 1.4 and 2.4 solar masses). They are found to have masses greater than or comparable to their virial masses and are thus expected to undergo gravitational collapse. We classify them as pre-protostellar sources. The two new sources are good candidates for pre-protostellar sources or protostars within L183.

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