H I and CO observations of the circumnebular envelopes of planetary nebulae | Zendy

G. T. Gussie | Zendy; A. R. Taylor | Zendy

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H I and CO observations of the circumnebular envelopes of planetary nebulae

Author(s) -

G. T. Gussie,

A. R. Taylor

Publication year - 1995

Publication title -

monthly notices of the royal astronomical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.058

H-Index - 383

eISSN - 1365-8711

pISSN - 0035-8711

DOI - 10.1093/mnras/273.3.801

Subject(s) - planetary nebula , physics , astrophysics , emission nebula , nebula , radius , emission spectrum , astronomy , telescope , doubly ionized oxygen , james clerk maxwell telescope , spectral line , stars , star formation , computer security , computer science

21cm spectral-line and continuum observations of ten compact planetarynebulae have been made with the Very Large Array. Circumnebular atomic hydrogenis identified in the planetary nebulae SwSt1, M3-35, and possibly in Hu2-1. Thepossibility of an inverse correlation between the optical depth ofcircumnebular atomic hydrogen and the linear radius of the ionised nebula isinvestigated, but not shown to be statistically significant. Observations ofJ=2-1CO emission for 22 planetary nebulae and J=3-2CO emission for 16 planetarynebulae taken with the James Clerk Maxwell Telescope are presented. J=2-1COemission is detected in the planetary nebula M1-59, and previous CO detectionsin IC5117, M1-16, and NGC6302 are confirmed. J=3-2CO emission is detected inthe planetary nebulae IC 5117, and NGC 6302.Comment: 36 pages, postscript file includes 4 figures, accepted for publication in MNRAS, file also available as ftp://pandora.phys.utas.edu.au/HI.p

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