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Far-infrared CO line emission of protostars in NGC 1333

Caux, E.; Ceccarelli, C.; Castets, A.; Loinard, L.; Molinari, S.; Saraceno, P.; Smith, H. A. and White, G. J. (1999). Far-infrared CO line emission of protostars in NGC 1333. In: The Universe as Seen by ISO, 20-23 October 1998, ESTEC, Holland, p. 643.

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Using the Long Wavelength Spectrometer aboard ISO, we have observed three very young sources (Class 0 or I) in the molecular cloud NGC1333. We discuss in this contribution the FIR CO line emission observed towards the sources themselves and conclude that both a rather warm (~ 1500 K) and dense (~ 105 cm-3) gas or a colder (~ 300 K) and much denser (≥ 108 cm-3) gas are consistent with the data. Based on this analysis only we cannot distinguish between the two cases and therefore assess whether the observed emission originates in a shock associated with the outflow or in the innermost, dense and warm regions of the envelopes that surround these sources.

Item Type: Conference Item
Copyright Holders: 1999 European Space Agency
Extra Information: The Universe as Seen by ISO.
Eds. P. Cox & M. F. Kessler.
ESA-SP 427.
pp. 643-646
Keywords: molecular lines; star formation
Academic Unit/Department: Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 33309
Depositing User: G. J. White
Date Deposited: 03 May 2012 14:40
Last Modified: 24 Jan 2016 02:40
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