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Titolo:
Bands of solid CO2 in the 2-3 mu m spectrum of S 140 : IRS1
Autore:
Keane, JV; Boogert, ACA; Tielens, AGGM; Ehrenfreund, P; Schutte, WA;
Indirizzi:
Kapteyn Astron Inst, NL-9700 AV Groningen, Netherlands Kapteyn Astron Inst Groningen Netherlands NL-9700 AV ningen, Netherlands CALTECH, Downs Lab Phys 320 47, Pasadena, CA 91125 USA CALTECH Pasadena CA USA 91125 wns Lab Phys 320 47, Pasadena, CA 91125 USA SRON, NL-9700 AV Groningen, Netherlands SRON Groningen Netherlands NL-9700 AV NL-9700 AV Groningen, Netherlands Leiden Observ, NL-2300 RA Leiden, Netherlands Leiden Observ Leiden Netherlands NL-2300 RA -2300 RA Leiden, Netherlands
Titolo Testata:
ASTRONOMY & ASTROPHYSICS
fascicolo: 3, volume: 375, anno: 2001,
pagine: L43 - L46
SICI:
1432-0746(200109)375:3<L43:BOSCIT>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
INFRARED-SPECTROSCOPY; INTERSTELLAR ICES; CARBON-DIOXIDE; PROTOSTARS; MIXTURES; ANALOGS; CLOUDS; H2O;
Keywords:
ISM : molecules; ISM : abundances; stars : S 140 : IRS1; infrared : stars;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Keane, JV Kapteyn Astron Inst, POB 800, NL-9700 AV Groningen, Netherlands Kapteyn Astron Inst POB 800 Groningen Netherlands NL-9700 AV ds
Citazione:
J.V. Keane et al., "Bands of solid CO2 in the 2-3 mu m spectrum of S 140 : IRS1", ASTRON ASTR, 375(3), 2001, pp. L43-L46

Abstract

We investigate the 2-3 mum ISO-SWS spectrum of the luminous protostellar object S 140:IRS1. Two narrow absorption features are detected at 2.70 and 2.77 mum, which are well fitted with laboratory spectra of the nu (1) + nu (3) and the 2 nu (2) + nu (3) combination modes of solid CO2. 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 particleshape 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.

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Documento generato il 30/11/20 alle ore 16:57:53