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Preprint A/09


(F)UV spectroscopy of K648, the Central Star of the Planetary Nebula Ps1 in the Globular Cluster M15

S. J. Mohamad-Yob (1), M. Ziegler (2), T. Rauch (2), K. Werner (2)

(1) School of Applied Physics, Universiti Kebangsaan Malaysia, Bangi, Malaysia
(2) Institute for Astronomy and Astrophysics, Kepler Center for Astro and Particle Pphysics, Eberhard Karls University, 72076 Tübingen, Sand 1, Germany

To be published in: Proceedings of the Conference of the Indonesian Astronomical Society (HAI) 2009

Abstract. We present preliminary results of an ongoing spectral analysis of K 648, the central star of the planetary nebula Ps 1, by means of state-of-the-art model-atmosphere techniques using TMAP, the Tübingen NLTE Model Atmosphere Package.
Based on high-resolution, high-S/N (F)UV observations obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE) and the Space Telescope Imaging Spectrograph (STIS) on board the Hubble Space Telescope (HST), we aim to determine the effective temperature, surface gravity, and abundances of trace elements precisely.
 
Key words: stars: abundances -- stars: AGB and post-AGB -- stars: atmospheres -- stars: chemically peculiar -- stars: early-type -- stars: evolution -- stars: individual: K 648 -- planetary nebulae: individual: PS 1, PN G065.0-27.3

Preprint (170 kb PDF file including figures)


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