Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001assl..265..209r&link_type=abstract
Post-AGB Objects as a Phase of Stellar Evolution, Proceedings of the Toruń Workshop held July 5-7, 2000. Edited by R. Szczerba a
Astronomy and Astrophysics
Astrophysics
2
Scientific paper
Hen 3-1475 (IRAS 17423-1755) has recently been identified via ground-based and HST optical images as a bipolar proto-planetary nebula displaying a remarkable highly--collimated optical jet and a spectacular S-shaped string of knots along its bipolar axis, associated to extremely high velocities which decrease with the distance to the central star. We present new long-slit high resolution spectroscopy of the highly collimated regions of Hen 3-1475. IRAS 17423-1755 The high-dispersion spectra are used together with the high angular resolution images obtained with HST WFPC2 to provide a comprehensive picture of the complex structure and kinematics of the shocked--excited emission and the dust--scattered emission in this proto-planetary nebula. The overall picture supports a temporal and angular variability of the jet ejection.
Bobrowsky Matthew
Garcia-Lario Pedro
Manchado Arturo
Riera Angels
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