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400 new Planetary Nebulae in the Galactic Bulge

Published online by Cambridge University Press:  15 December 2006

A. Acker ,
A.E.J. Peyaud  and
Q. Parker
A. Acker
Affiliation:
Observatoire de Strasbourg, 11 rue de l'Universite, 67000, Strasbourg, France email: acker@astro.u-strasbg.fr
A.E.J. Peyaud
Affiliation:
Observatoire de Strasbourg, 11 rue de l'Universite, 67000, Strasbourg, France email: acker@astro.u-strasbg.fr Macquarie University, Sydney, Australia
Q. Parker
Affiliation:
Macquarie University, Sydney, Australia Anglo-Australian Observatory, Sydney, Australia
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Abstract

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About 500 MASH(Macquarie/AAO/Strasbourg H$\alpha$ planetary nebula project) PNe were discovered towards the galactic bulge (Parker et al. 2006). For 405 MASH PNe with a diameter $<$ 35 arcsec, we obtain surface brightness, diameter and dynamical age of the nebulae. From line intensity ratios of 133 GBPN observed with the 6dF device, we obtain their density and ionized mass, and their central star temperatures. We discover 15 bipolar and/or nitrogen-rich GBPNe having probably massive stellar progenitors (Peyaud, 2005).

Keywords

Planetary NebulaeGalactic Bulge
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S234: Planetary Nebulae in our Galaxy and Beyond , April 2006 , pp. 355 - 356
Copyright
© 2006 International Astronomical Union