| Issue |
A&A
Volume 375, Number 3, September 2001
|
|
|---|---|---|
| Page(s) | L43 - L46 | |
| Section | Letters | |
| DOI | https://doi.org/10.1051/0004-6361:20010977 | |
| Published online | 15 September 2001 | |
Bands of solid CO
in the 2-3μm spectrum of S 140:IRS1*
1
Kapteyn Astronomical Institute, PO Box 800, 9700 AV Groningen, The Netherlands
2
California Institute of Technology, Downs Laboratory of Physics 320-47, Pasadena CA 91125, USA
3
SRON, PO Box 800, 9700 AV Groningen, The Netherlands
4
Leiden Observatory, PO Box 9513, 2300 RA Leiden, The Netherlands
Corresponding author: J. V. Keane, This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
14
November
2000
Accepted:
6
July
2001
Abstract
We investigate the 2-3
ISO-SWS spectrum of the luminous
protostellar object S 140:IRS1. Two narrow absorption features are
detected at 2.70 and 2.77 μm, which are well fitted with
laboratory spectra of the 
and the 
combination modes of
solid 
. The ice in this line of sight must have been subjected to
significant heating, in agreement with previously studied CO2
bands. A combined laboratory fit to all CO2 bands detected toward
S 140:IRS1 shows, among others, the need for particle shape calculations
for the CO2 stretch mode. Finally, we discuss the absence of
features of isolated H2O and dangling OH groups in the spectrum of
S 140:IRS1.
Key words: ISM: molecules / ISM: abundances / stars: individual: S 140:IRS1 / infrared: stars
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 UK) and with the participation of ISAS and NASA.
© ESO, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.