Browsing by Author "Mampaso, A."

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    A new planetary nebula in the outer reaches of the Galaxy
    (2011) Viironen, K.; Mampaso, A.; Corradi, R. L. M.; Drew, J. E.; Frew, D. J.; Giammanco, C.; Greimel, R.; Liimets, T.; Lindberg, J. E.; Rodriguez, M.; Sabin, L.; Sale, S. E.; Wilson, P. A.; Zijlstra, A.
    Aims. A proper determination of the abundance gradient in the Milky Way requires the observation of objects at large galactiocentric distances. With this aim, we are exploring the planetary nebula population towards the Galactic anticentre. In this article, the discovery and physico-chemical study of a new planetary nebula towards the anticentre direction, IPHASX J052531.19+281945.1 (PNG 178.1-04.0), is presented.
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    The Necklace: equatorial and polar outflows from the binary central star of the new planetary nebula IPHASX J194359.5+170901
    (2011) Corradi, R. L. M.; Sabin, L.; Miszalski, B.; Rodriguez-Gil, P.; Santander-Garcia, M.; Jones, D.; Drew, J. E.; Mampaso, A.; Barlow, M. J.; Rubio-Diez, M. M.; Casares, J.; Viironen, K.; Frew, D. J.; Giammanco, C.; Greimel, R.; Sale, S. E.
    IPHASX J194359.5+170901 is a new high-excitation planetary nebula with remarkable characteristics. It consists of a knotty ring expanding at a speed of 28 km s-1, and a fast collimated outflow in the form of faint lobes and caps along the direction perpendicular to the ring. The expansion speed of the polar caps is similar to 100 km s-1, and their kinematical age is twice as large as the age of the ring.