The Open UniversitySkip to content

LWS observations of the protostar IRAS16293-2422

Ceccarelli, C.; Caux, E.; White, G. J.; Molinari, S.; Furniss, I.; Liseau, R.; Nisini, B.; Saraceno, P.; Spinoglio, L. and Wolfire, M. (1998). LWS observations of the protostar IRAS16293-2422. In: Star Formation with the Infrared Space Observatory, 24-26 Jun 1997, Lisbon, Portugal.

Full text available as:
PDF (Version of Record) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (564kB)
Google Scholar: Look up in Google Scholar


We report ISO-LWS observations toward the low mass star IRAS16293-2422 between 43µm - 197µm. The CO, H2O and OH rotational lines and the OI(63µm) fine-structure line dominate the spectrum. Combining the CO Jup=14 to 25 observations with previous Jup=6 measurements, we derive stringent limits on the density (~3 · 104cm-3), temperature (~1500 K), and column density (~1.5 · 1020cm-2) of the emitting gas. We show that this warm gas is associated with the outflow and that a low velocity, C-type shock can account for the characteristics of the CO spectrum. The H2O and OH abundances derived from the observed line fluxes are [H2O] / [H2] ~2 · 10-5 and [OH] / [H2] ~5 · 10-6 respectively. Finally, we speculate that the OI(63µm) line emission originates in the collapsing envelope that surrounds the central object.

Item Type: Conference or Workshop Item
Copyright Holders: 1997 Astronomical Society of the Pacific
Extra Information: Star Formation with the Infrared Space Observatory
ASP Conference Series, Vol.132, 1998
J. L. Yun, and R. Liseau, eds.
ISBN: 1-886733-52-X
eISBN: 978-1-58381-468-0
pp. 243-248
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Related URLs:
Item ID: 32675
Depositing User: G. J. White
Date Deposited: 16 Mar 2012 09:43
Last Modified: 15 Dec 2018 11:49
Share this page:

Download history for this item

These details should be considered as only a guide to the number of downloads performed manually. Algorithmic methods have been applied in an attempt to remove automated downloads from the displayed statistics but no guarantee can be made as to the accuracy of the figures.

Actions (login may be required)

Policies | Disclaimer

© The Open University   contact the OU