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Proper Motion and Kinematics of the Ansae in NGC7009
Rodrigo Fernandez M., Hektor Monteiro, Hugo E. Schwarz
We have measured the proper motion (PM) and kinematics of the ansae in NGC 7009 using high dispersion echelle spectra and archive narrow band HST images. Assuming that the ansae ar…
Kinematics and Proper Motion of the Ansae in NGC7009
Rodrigo Fernandez, Hugo E. Schwarz, Hektor Monteiro
We have measured the expansion velocities and proper motion of the ansae in NGC7009 using high dispersion echelle spectra and archive narrow band HST images. Assuming that the ansa…
Orientation effects in bipolar nebulae: Can disks do it?
Hektor Monteiro, Hugo E. Schwarz, Ryan T. Peterson
In this work we investigate how a circumstellar disk affects the radiation emitted by an embedded star. We show correlations obtained from broad-band observations of bipolar nebula…
Binarity and Symbiotics in Asymmetrical Planetary Nebulae
Hugo E. Schwarz, Hektor Monteiro
We show that there are strong links between certain types of asymmetrical Planetary Nebulae (PNe) and symbiotic stars. Symbiotics are binaries and several have extended optical neb…