A Molecular Disk around the Episodic Jets in KjPn 8

Details A Molecular Disk around the Episodic Jets in KjPn 8 A Molecular Disk around the Episodic Jets in KjPn 8

Jul 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...483l..57h&link_type=abstract

Astrophysical Journal Letters v.483, p.L57

Astronomy and Astrophysics

Astronomy

9

Stars: Circumstellar Matter, Ism: Jets And Outflows, Ism: Planetary Nebulae: Individual Alphanumeric: Kjpn 8, Stars: Mass Loss

Scientific paper

We report the detection of millimeter CO emission from a dense, expanding disk of molecular gas, ~20" in diameter, at the center of the remarkable 14' x 4', bipolar, episodic jet system of the planetary nebula KjPn 8. The disk surrounds the compact photoionized core and exceeds it in mass by at least an order of magnitude. The disk axis lies at a position angle of ~115 deg and appears to be aligned with the most prominent and youngest of the bipolar jets. The disk axis is not, however, aligned with the older, more extensive bipolar structure of the nebula at a position angle of ~71 deg, indicating that major changes have taken place in the escape of matter from the central star system over the last ~5000 yr.

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