J/A+A/329/219 28SiO in O-rich evolved stars (Pardo+ 1998)
Simultaneous observations of maser lines of 28SiO in evolved stars
Pardo J.R., Cernicharo J., Gonzalez-Alfonso E., Bujarrabal V.
<Astron. Astrophys. 329, 219 (1998)>
=1998A&A...329..219P 1998A&A...329..219P (SIMBAD/NED BibCode)
ADC_Keywords: Masers ; Stars, O ; Radio lines
Keywords: stars: AGB, post-AGB - masers - stars: circumstellar matter -
radio-lines: stars
Abstract:
We present simultaneous observations of several rotational lines of
28SiO in the v=1, 2, 3, and 4 vibrationally excited states toward
O-rich evolved stars. All the data were taken in a relatively short
period of 65 days, which allows a comparative study of the 28SiO
maser lines intensities and profiles. The observed differences
concerning intensity and line shape among the different maser lines
suggest that infrared overlaps deeply affect the pumping of some SiO
masers. We qualitatively discuss this effect with consideration to the
IR overlaps at 8 µm between the various SiO isotopomers and between
28SiO and water vapor
Objects:
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RA (2000) DE Designation(s)
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01 06 25.9 +12 35 53 IRC +10011 = WX Psc
02 22 51.7 +58 35 12 S Per = HD 14528
03 53 28.5 +11 24 20 IK Tau
05 00 54 +56 11 18 TX Cam
05 11 19.4 +52 52 34 IRC+ 50137 = NV Aur
09 47 33.4 +11 25 46 R Leo = HD 84748 = HR 3882
19 06 22.1 +08 13 51 R Aql = HD 177940 = HR 7243
19 57 36.2 -01 53 11 RR Aql = HD 188915
20 46 25.6 +40 06 56 NML Cyg = V1489 Cyg
21 09 32.2 +68 29 28 T Cep = HD 202012 = HR 8113
21 43 30.3 +58 46 48 mu Cep = HD 206936 = HR 8316
23 58 24.3 +51 23 18 R Cas = HD 224490 = HR 9066
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tab5-16.dat 44 247 Parameters of detected 28SiO lines
tab5-16.ps 83 2292 Post-Script version of tab5-16
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Byte-by-byte Description of file: tab5-16.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Star Star name
12- 21 A10 --- Line Line identification (quantum numbers)
23- 29 F7.3 km/s VPeak Peak velocity
30- 36 F7.3 km/s HWPeak Peak halfwidth
37- 44 F8.2 Jy.km/s IntArea Integrated area
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Acknowledgements: Juan Pardo
(End) Patricia Bauer [CDS] 15-Dec-1997