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- W2056525361 abstract "view Abstract Citations (62) References (32) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS CO Emission from Evolved Stars and Proto--Planetary Nebulae Knapp, G. R. ; Sutin, B. M. ; Phillips, T. G. ; Ellison, B. N. ; Keene, J. B. ; Leighton, R. B. ; Masson, C. R. ; Steiger, W. ; Veidt, B. ; Young, K. Abstract The first observations of circumstellar CO emission from cool evolved giant stars using the Caltech 10.4 m submillimeter telescope are reported. New detections, some tentative, were made of 16 stars, mostly south of -20 deg declination. Among the objects detected are the nearby S star Pi1 Gru; the peculiar stars IRAS 15194-5115, IRAS 19500-1709, and IRAS 23321+6545; the supergiant OH/IR star VX Sgr; and possibly the WC10 Wolf-Rayet star CPD -56 deg 8032 - this observation helps establish the identification of cool WC10 stars with planetary nebula nuclei. The CO outflow velocity for VX Sgr is about 30 Km/s, while that measured by OH maser emission is 19 Km/s, showing that the wind velocity for VX Sgr continues to increase to very large distances from the star. The location of the peculiar cool stars on IRAS color-color diagrams and the detection of circumstellar CO suggests that they are proto-planetary nebulae. Publication: The Astrophysical Journal Pub Date: January 1989 DOI: 10.1086/167052 Bibcode: 1989ApJ...336..822K Keywords: Carbon Monoxide; Emission Spectra; Planetary Nebulae; Protoplanets; Stellar Envelopes; Carbon Stars; Color-Color Diagram; Infrared Astronomy Satellite; Peculiar Stars; S Stars; Wolf-Rayet Stars; Astrophysics; NEBULAE: PLANETARY; STARS: CIRCUMSTELLAR SHELLS; STARS: MASS LOSS full text sources ADS | data products SIMBAD (41)" @default.
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- W2056525361 date "1989-01-01" @default.
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- W2056525361 title "CO emission from evolved stars and proto-planetary nebulae" @default.
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