1998A&A...339L..17E

Query : 1998A&A...339L..17E

1998A&A...339L..17E - Astronomy and Astrophysics, volume 339L17-20 (1998/11-1)

Ice segregation toward massive protostars.

EHRENFREUND P., DARTOIS E., DEMYK K. and D'HENDECOURT L.

Abstract (from CDS):

Recent ISO results allow new insights into the evolution of interstellar ices in the vicinity of massive protostars. The presence of CO₂ ice has recently been confirmed with the SWS (Short Wavelength Spectrometer) on-board ISO as a dominant ice component of interstellar grain mantles. The bending mode of CO₂ ice, currently observed toward many massive protostars, shows a particular triple-peak structure. We report on recent laboratory results which identify the CO₂ bending mode feature in dense clouds with molecular complexes formed between CO₂ and CH₃OH ice, which become spectroscopically discernible during the ice segregation process. The comparison of laboratory data and the ISO spectrum of RAFGL7009S indicates the presence of an ice layer with a composition of CO₂, CH₃OH and H₂O in equal proportions. This paper shows evidence for ice segregation and thermal processing in the line-of-sight toward massive protostars.

Abstract Copyright: ∼

Journal keyword(s): ISM: molecules - dust - infrared: interstellar: lines - ISM: individual: RAFGL 7009S

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	RAFGL 7009S	HII	18 34 20.911	-05 59 42.23						~	231	0

Query : 1998A&A...339L..17E

Basic data :

RAFGL 7009S -- HII Region
Other object types:	`HII (1996A&AS,[BNM96],...)`, `MIR (AKARI,MSX5C,...)`, `Rad (Mol,[GGB2012],...)`, `IR (IRAS,RAFGL)`, `Y*O (2013MNRAS)`, `of? (2012ApJ)`, `Mas (2011MNRAS)`
ICRS coord. (ep=J2000) :	`18 34 20.911 -05 59 42.23 (Middle-IR) [ 1000 1000 90 ] D 2012yCat.2311....0C`
FK4 coord. (ep=B1950 eq=1950) :	`18 31 40.162 -06 02 06.09 [ 1000 1000 90 ]`
Gal coord. (ep=J2000) :	`025.649639 +01.049433 [ 1000 1000 90 ]`
VLSR :	`41.4 35.9 46.9 [0.13] (Rad)` `1996A&AS..115...81B`

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`AKARI-IRC-V1 J1834209-055941`	`Mol 62`	`WISEA J183420.91-055942.5`	`[GSL2002] 84`
`AKARI-FIS-V1 J1834204-055946`	`MSX5C G025.6510+01.0497`	`WISE J183420.91-055942.2`	`[KCW94] 025.650+01.050`
`GAL 025.65+01.05`	`MSX6C G025.6498+01.0491`	`[BNM96] 025.647+1.054`	`[WBH98] 18316-0602`
`IRAS 18316-0602`	`RAFGL 7009S`	`[GGB2012] G025.6469+01.0534`	`[WHR97] 18316-0602`

References (231 between 1850 and 2026) (Total 231)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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Data at NED - NASA/IPAC Extragalactic Database : RAFGL 7009S

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`AKARI-IRC-V1 J1834209-055941`	`AKARI-FIS-V1 J1834204-055946`	`IRAS 18316-0602`	`MSX5C G025.6510+01.0497`	`MSX6C G025.6498+01.0491`
`RAFGL 7009S`	`WISEA J183420.91-055942.5`	`WISE J183420.91-055942.2`

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