Bands of solid CO$_\mathsf{2}$ in the 2-3μm spectrum of S 140:IRS1

Autor:	Pascale Ehrenfreund, W. A. Schutte, A. C. A. Boogert, Aggm Tielens, Jacqueline V. Keane
Rok vydání:	2001
Předmět:	Physics Line-of-sight Space and Planetary Science Infrared spectroscopy Particle Protostar Astronomy and Astrophysics Astrophysics Absorption (chemistry) Spectrum (topology) Spectral line
Zdroj:	Astronomy and Astrophysics
ISSN:	1432-0746 0004-6361
DOI:	10.1051/0004-6361:20010977
Popis:	We investigate the 2-3 µm 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 ν_1 + ν_3 and the 2ν_2 + ν_3 combination modes of solid . The ice in this line of sight must have been subjected to significant heating, in agreement with previously studied CO_2 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 CO_2 stretch mode. Finally, we discuss the absence of features of isolated H_2O and dangling OH groups in the spectrum of S 140:IRS1.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d615217a7fe8f09e7164e88a4f6e2f6d https://doi.org/10.1051/0004-6361:20010977 Zobrazit plný text záznamu