Access to Astronomical Catalogues

← Click to display the menu
J/ApJS/193/17  Spectral-line survey of IRC+10216 at 293-355GHz  (Patel+, 2011)

An interferometric spectral-line survey of IRC+10216 in the 345 GHz band. Patel N.A., Young K.H., Gottlieb C.A., Thaddeus P., Wilson R.W., Menten K.M., Reid M.J., McCarthy M.C., Cernicharo J., He J., Brunken S., Trung D.-V., Keto E. <Astrophys. J. Suppl. Ser., 193, 17 (2011)> =2011ApJS..193...17P
ADC_Keywords: Line Profiles ; Stars, carbon ; Spectra, millimetric/submm Keywords: astrochemistry - line: identification - stars: AGB and post-AGB - stars: individual (IRC+10216, CW Leo) - surveys Abstract: We report a spectral-line survey of the extreme carbon star IRC+10216 carried out between 293.9 and 354.8GHz with the Submillimeter Array. A total of 442 lines were detected, more than 200 for the first time; 149 are unassigned. Maps at an angular resolution of ∼3" were obtained for each line. A substantial new population of narrow lines with an expansion velocity of ∼4km/s (i.e., ∼30% of the terminal velocity) was detected. Most of these are attributed to rotational transitions within vibrationally excited states, emitted from energy levels above the ν=0, J=0 ground state with excitation energy of 1000-3000K. Emission from these lines appears to be centered on the star with an angular extent of <1". We use multiple transitions detected in several molecules to derive physical conditions in this inner envelope of IRC+10216. Description: The SMA observations of IRC+10216 were done in two periods, each about one week long. The first was 2007 January and February and the second 2009 February. All observations were made with the array in the subcompact configuration, with baselines from 9.5m to 69.1m. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 09 47 57.4 +13 16 44 IRC+10216 = V* CW Leo ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 153 442 Parameters of the lines detected in IRC+10216 in the Submillimeter Array (SMA) line survey
See also: J/ApJS/190/348 : 1mm spectral survey of IRC+10216 + VY CMa (Tenenbaum+, 2010) J/ApJS/186/406 : 350um polarimetry from CSO (Dotson+, 2010) J/ApJS/175/277 : Submillimeter-Continuum SCUBA detections (Di Francesco+, 2008) J/ApJS/177/275 : 1.3 and 2mm survey of IRC+10216 (He+, 2008) J/ApJ/688/L83 : Detection of C5N- in IRC +10216 (Cernicharo+, 2008) J/A+AS/142/181 : 2mm molecular line survey of IRC+10 216 (Cernicharo+, 2000) J/A+A/330/676 : IRC+10216 Silicon and sulfur chemistry (Willacy+, 1998) J/A+A/317/503 : Photometric + visibility data of IRC +10 216 (Groenewegen, 1997) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Index number 5- 15 A11 --- Species Species identification (1) 17- 40 A24 --- Vib Vibrational state (1) 42- 64 A23 --- Trans Transition (2) 66- 73 F8.1 MHz nuObs Observed frequency 75- 78 F4.1 MHz e_nuObs Uncertainty in nuObs 80- 87 F8.1 MHz nuCat ? Cataloged frequency (3) 89- 93 F5.1 MHz Delnu ? Difference between nuObs and nuCat 95- 99 F5.2 km/s Vexp ? Expansion velocity 101-105 F5.2 km/s e_Vexp ? Uncertainty in Vexp 107-114 F8.3 Jy Peak ? Peak flux density at observed frequency 116-122 F7.3 Jy e_Peak ? Uncertainty in Peak 124-131 F8.2 Iint ? Integrated intensity 133-139 F7.3 arcsec thetax ? De-convolved source size along X 141-146 F6.3 arcsec thetay ? De-convolved source size along Y 148-153 F6.2 deg PA [-90/90]? De-convolved source position angle
Note (1): The designation of the quantum numbers follow standard spectroscopic convention. The vibrational states of HCN are designated by the number of quanta in the (v1, v2, and v3) modes, and the vibrational angular momentum l in the v2 bending vibration. The symmetry of the l-type doublet is denoted by e and f. When e and f are not specified, both states are considered. Similarly, the vibrational states of HC3N are labeled by v4,v5,v6, and v7, and the vibrational angular momentum as l=l5,l6,l7X, where X=e or f as in HCN. Note (2): The rotational quantum numbers, with the upper level denoted first (i.e., Jupper-Jlower). The rotational levels of symmetric tops (e.g., CH3CN) are designated by J(K), asymmetric tops (e.g., SiCC) by J(Ka,Kc), and those with electron spin (e.g., SiN) by N,J. Note (3): We referred to the following spectral-line catalogs: Cologne Database for Molecular Spectroscopy (CDMS; see Muller et al. 2001A&A...370L..49M, 2005JMoSt.742..215M), Molecular Spectroscopy database of Jet Propulsion Laboratory (JPL; see Pickett et al. 1998JQSRT..60..883P), and the online Lovas line list (Lovas 2004JPCRD..33..177L). We used the Web site, which provides a convenient interface to these line catalogs (Remijan et al. 2010AAS...21547905R). In addition to the published line catalogs, we have also referred to a line catalog developed at the IRAM 30m telescope (J. Cernicharo et al. 2000, private communication). See section 4 for further details.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 12-Apr-2011
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service