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


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

1998A&A...339L..17E - Astronomy and Astrophysics, volume 339, L17-20 (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 - 2022
#notes
1 RAFGL 7009S HII 18 34 20.911 -05 59 42.23           ~ 203 0

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

Basic data :
RAFGL 7009S -- HII (ionized) region
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types:
IR (AKARI,IRAS,...), HII (1996A&AS,[BNM96],...), Rad (Mol,[GGB2012],...), of? (2012ApJ), Y*O (2013MNRAS), Mas (2011MNRAS)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) :
18 34 20.911 -05 59 42.23 (Middle-IR) [ ] D 2012yCat.2311....0C
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) :
18 31 40.162 -06 02 06.09 [ ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) :
025.649639 +01.049433 [ ]
Velocity of Local System : VSLR Vmin Vmax [error] (wavelength) bibcode
VLSR :
41.4 35.9 46.9 [0.13] (Rad) 1996A&AS..115...81B
SIMBAD within arcmin
', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay Simbad points in this preview
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within arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR.
The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding.
Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!).
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The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (16) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

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 (203 between 1850 and 2022) (Total 203)
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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Collections of Measurements


velocities : 1   

   

Observing logs


ISO : 28   

   


External archives :

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

Link by name to the catalogue in VizieR :

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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2022.05.23-11:23:20

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