J/A+A/559/A51 HC3N in Orion KL (Esplugues+, 2013)
Combined IRAM and Herschel/HIFI study of cyano(di)acetylene in Orion KL:
tentative detection of DC3N.
Esplugues G.B., Cernicharo J., Viti S., Goicoechea J.R., Tercero B.,
Marcelino N., Palau Aina , Bell T.A., Bergin E.A., Crockett N.R., Wang S.
<Astron. Astrophys. 559, A51 (2013)>
=2013A&A...559A..51E 2013A&A...559A..51E
ADC_Keywords: Molecular clouds ; Radio lines ; Spectroscopy
Keywords: ISM: clouds - ISM: molecules - ISM: abundances - radio lines: ISM
Abstract:
We present a study of cyanoacetylene (HC3N) and cyanodiacetylene
(HC5N) in Orion KL, using observations from two line surveys
performed with the IRAM 30-m telescope and the HIFI instrument onboard
the Herschel telescope. The frequency ranges covered are 80-280GHz and
480-1906GHz.
This study (divided by families of molecules) is part of a global
analysis of the physical conditions of Orion KL and the molecular
abundances in the different components of this cloud.
We modeled the observed lines of HC3N, HC5N, their isotopologues
(including DC3N), and vibrational modes using a non-local
thermodynamic equilibrium (non-LTE) radiative transfer code. In
addition, to investigate the chemical origin of HC3N and DC3N in
Orion KL, we used a time-dependent chemical model.
Description:
The observations were carried out using the IRAM 30-m radiotelescope
during September 2004 and March 2005.
Objects:
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RA (2000) DE Designation(s)
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05 35 14.16 -05 22 21.5 Orion KL = NAME ORION-KL
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 121 754 Observed lines of HC3N and its isotopologues
(ground- and vibrational states)
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See also:
J/ApJS/156/127 : 350µm molecular line survey of Orion KL (Comito+, 2005)
J/A+A/532/A32 : HCOOCH3 map of Orion-KL (Favre+, 2011)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Species Species and vibrational mode
20- 37 A18 --- Trans Transition, J-J'
39- 48 F10.3 MHz Freq0 [81530/826300] Predicted rest frequency
50- 54 F5.2 --- Sij Line strength
56- 61 F6.1 K Eu Energy of the upper level
63- 71 F9.2 MHz Freq [81530/826300]?=- Observed frequency assuming
a Vlsr of 9.0km/s
73- 76 F4.1 km/s Vlsr [-0.4/11.4]?=- Observed LSR velocity
79 A1 --- l_Tmb Limit flag on Tmb
80- 84 F5.2 K Tmb ?=- Observed peak line main-beam temperature
86-121 A36 --- Blend Species blended with
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Acknowledgements:
Gisela Esplugues,
(End) Patricia Vannier [CDS] 24-Oct-2013