CDS

2011A&A...528A.118G

Query : 2011A&A...528A.118G

2011A&A...528A.118G - Astronomy and Astrophysics, volume 528A, 118-118 (2011/4-1)

The influence of temperature on the synthesis of molecules on icy grain mantles in dense molecular clouds.

GAROZZO M., LA ROSA L., KANUCHOVA Z., IOPPOLO S., BARATTA G.A., PALUMBO M.E. and STRAZZULLA G.

Abstract (from CDS):

Infrared observations show the presence of icy mantles along the line of sight toward young stellar objects (YSOs), where a temperature gradient is expected and indirectly observed. In this environment, icy mantles are affected by ion and UV irradiation. Laboratory experiments show that molecules are formed after irradiation of icy mixtures. However, most of the experiments done so far have been performed in the temperatures range of 10-20K. To extend previous work we irradiated some icy mixtures, namely H2O:CO=10:1, H2O:CH4=4:1, and H2O:CO2=3:1 at two different temperatures (12K and 40 or 60K) to study the effects of temperature on the synthesis of molecules and the decrease in their parent species after ion irradiation. The experiments were performed in a high-vacuum chamber (P<10–7mbar), where icy samples were irradiated with 30keV He+ ions and analyzed by a FTIR spectrophotometer. Infrared spectra of the samples were recorded after various steps of irradiation. We found that the temperature affects the behavior of the volatile species (i.e., CO and CH4) during irradiation. As a consequence, the production of molecular species is generally more prevalent at 12K than at either 40 or 60K, while the decrease in their parent volatile species is faster at high temperature. We conclude that the behavior of each species depends on the value of its sublimation temperature with respect to the temperature of the sample. If this latter is higher than the sublimation temperature of a given species, then the effects of thermal desorption compete with those due to irradiation.

Abstract Copyright: ∼

Journal keyword(s): astrochemistry - molecular processes - methods: laboratory - techniques: spectroscopic - ISM: abundances - ISM: molecules

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 - 2023 		#notes
1 RAFGL 989 Y*O 06 41 10.1587451112 +09 29 33.635220144   17.4 16.8 18.26 17.28 B2 260 0

Query : 2011A&A...528A.118G

Basic data :
RAFGL 989 -- Young Stellar Object
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 (IRAS,RAFGL,...), MIR (AKARI,MSX5C,...), smm (2015MNRAS,JCMTSE,...), Y*O (2013ApJS,MPCM), * (Cl*,[II78],...), X (CXOU,[FMS2006]), out (2015MNRAS), Rad ([RRA2004]), NIR (2MASS)
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) : 		06 41 10.1587451112 +09 29 33.635220144 (Optical) [ 1.7504 1.6931 90 ] C 2020yCat.1350....0G
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) : 		06 38 25.3898631072 +09 32 26.750888601 [ 1.7504 1.6931 90 ]
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) : 		203.3167593398918 +02.0564798010654 [ 1.7504 1.6931 90 ]
Velocity of Local System : VSLR Vmin Vmax [error] (wavelength) bibcode
VLSR : 		7.46 3.90 11.03 [0.04] (smm) 1989A&AS...80..149W
Spectral type is made of 3 parts: %coding is composed of 4 parts :
  • the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities;
  • a quality letter: A=best quality→E=worst quality, {� } =unknown quality %
  • a quality letter: A=best quality -> E=worst quality, {� } =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type: 		B2 D ~
Syntax of angular size is : "maj-axis min-axis angle (wtype) quality bibcode"
  • maj-axis : major axis size (arc minutes)
  • min-axis : minor axis size (arc minutes)
  • angle : orientation angle (in degrees)
  • (wtype) : wavelength class for the origin of the angular size (Rad, mm, IR, Opt, UV, Xray, Gam)
  • quality : flag of quality of the angular size values ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the angular size reference
Angular size (arcmin): 		1.7330 1.7330 0 (Rad) D 2015MNRAS.453.2006B
Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z
  • (System) : may be AB (default is Vega)
  • flux-value : value of flux or magnitude
  • [error] : error value
  • quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality)
  • MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4])
  • bibcode : bibcode of the flux reference
Fluxes (8) :
B 17.4 [~] E ~
V 16.8 [~] E ~
R 18.26 [~] D 2006A&A...455..903F
G 20.700956 [0.019935] C 2020yCat.1350....0G
I 17.28 [~] D 2006A&A...455..903F
J 11.51 [0.04] E 2003yCat.2246....0C
H 7.643 [0.040] C 2003yCat.2246....0C
K 4.924 [0.016] C 2003yCat.2246....0C
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!). sed-help-icon

Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1 : 2357 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (33) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

Cl* NGC 2264 LBM 6076 MPCM J064110.15+092933.9 RAFGL 899 [MLY89] IRAS 9
AKARI-IRC-V1 J0641101+092933 MSX5C G203.3167+02.0560 TIC 220323101 [MRC90] IRS D
Cl* NGC 2264 FMS 2-1285 MSX6C G203.3166+02.0564 WB89 863 [RRA2004] NGC 2264 MM VLA 4
CXOU J064110.1+092933 NAME NGC 2264 IRS WISEA J064110.14+092933.2 [STO85] IRS 1
GAL 203.32+02.06 NAME NGC 2264 IRS 1 WISE J064110.19+092934.5 Gaia DR3 3326686680263989376
IRAS 06384+0932 NAME Allen IRS [BE83] IR 203.32+02.05 Gaia DR2 3326686680263989376
JCMTSE J064110.3+092925 NAME Allen's Source [BR2015] 3
JCMTSF J064110.3+092925 NAME NGC 2264 IR [FMS2006] 305
2MASS J06411015+0929336 RAFGL 989 [II78] 38

References (260 between 1850 and 2023) (Total 260)
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    distance : 1   

   

Observing logs


ISO : 1   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : RAFGL 989

Link by name to the catalogue in VizieR :

AKARI-IRC-V1 J0641101+092933 IRAS 06384+0932 2MASS J06411015+0929336 MSX5C G203.3167+02.0560 MSX6C G203.3166+02.0564
RAFGL 989 RAFGL 899 WISEA J064110.14+092933.2 WISE J064110.19+092934.5 Gaia DR3 3326686680263989376
Gaia DR2 3326686680263989376

Search by coordinates in Vizier (radius: 30 arcsec)

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2023.06.10-12:12:43

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