# Spectral analysis of the sdO K 648 , the exciting star of the planetary nebula Ps 1 in the globular cluster M 15 ( NGC 7078 )

@article{Rauch2002SpectralAO,
title={Spectral analysis of the sdO K 648 , the exciting star of the planetary nebula Ps 1 in the globular cluster M 15 ( NGC 7078 )},
author={T Rauch and Ulrich Heber and Klaus Werner},
journal={Astronomy and Astrophysics},
year={2002},
volume={381},
pages={1007-1014}
}
• Published 3 November 2001
• Physics
• Astronomy and Astrophysics
We present a spectral analysis of the sdO central star K 648 based on medium-resolution optical and high-resolution UV spectra. The photospheric parameters are determined by means of state-of-the-art NLTE model atmosphere techniques. We found and . The helium () and oxygen () abundances are about solar while carbon is enriched by a factor of 2.5 (). Nitrogen (, $\rm [N/H] = -2.0$) appears at a sub-solar value. However, these metal abundances are much higher than the cluster's metallicity (M 15…

## Figures and Tables from this paper

Chemical Abundances and Dust in the Halo Planetary Nebula K648 in M15: Its Origin and Evolution based on an Analysis of Multiwavelength Data
We report an investigation of the extremely metal-poor and C-rich planetary nebula (PN) K648 in the globular cluster M15 using the UV to far-IR data obtained using the Subaru, HST, FUSE, Spitzer, and
Masses of the Planetary-Nebula Central Stars in the Galactic Globular-Cluster System from HST Imaging and Spectroscopy
The globular cluster (GC) system of our Galaxy contains four planetary nebulae (PNe): K 648 (or Ps 1) in M15, IRAS 18333-2357 in M22, JaFu 1 in Pal 6, and JaFu 2 in NGC 6441. Because single-star
A non-LTE abundance analysis of the post-AGB star ROA 5701
• Physics
• 2006
An analysis of high-resolution Anglo-Australian Telescope (AAT)/University College London Echelle Spectrograph (UCLES) optical spectra for the ultraviolet (UV)-bright star ROA 5701 in the globular
The Rapidly Rotating, Hydrogen-deficient, Hot Post-Asymptotic Giant Branch Star ZNG 1 in the Globular Cluster M5
• Physics
• 2004
We report observations of the hot post-asymptotic giant branch star ZNG 1 in the globular cluster M5 (NGC 5904) with the Far Ultraviolet Spectroscopic Explorer. From the resulting spectrum, we derive
The Origin and Evolution of the Halo PN BoBn?1: From a Viewpoint of Chemical Abundances Based on Multiwavelength Spectra
We have performed a comprehensive chemical abundance analysis of the extremely metal-poor ([Ar/H] < ?2) halo planetary nebula (PN) BoBn?1 based on International Ultraviolet Explorer archive data,
Chemical abundances in the extremely Carbon and Xenon-rich halo planetary nebula H4-1
• Physics
• 2013
We performed detailed chemical abundance analysis of the extremely metal-poor ([Ar/H]-2) halo planetary nebula H4-1 based on the multi-wavelength spectra from Subaru/HDS, GALEX, SDSS, and Spitzer/IRS
FUSE, STIS and Keck spectroscopic analysis of the UV-bright star vZ 1128 in M3 (NGC 5272)
• Physics
• 2015
We present a spectral analysis of the UV-bright star vZ 1128 in M3 based on observations with the Far Ultraviolet Spectroscopic Explorer (FUSE), the Space Telescope Imaging Spectrograph (STIS), and
An analysis of the optical spectra of the post-asymptotic giant branch stars LSIV -12 111 and HD 341617
High spectral resolution and signal-to-noise observations of the absorption and emission line spectra in two post- asymptotic-giant-branch (PAGB) stellar candidates, LSIV 12 111 and HD 314617 are
Detection of a multishell planetary nebula around the hot subdwarf O-type star 2MASS J19310888+4324577
Context. The origin of hot subdwarf O-type stars (sdOs) remains unclear since their discovery in 1947. Among others, a post- Asymptotic Giant Branch (post-AGB) origin is possible for a fraction of
Analysis of Far-UV Data of Central Stars of Planetary Nebulae: Occurrence and Variability of Stellar Winds
• Physics
• 2013
The occurrence of stellar wind in the central star of a planetary nebula (CSPN) can be revealed by the presence of P Cygni profiles of high-excitation lines overimposed on its stellar continuum. We

## References

SHOWING 1-10 OF 15 REFERENCES
Hubble Space Telescope and Ground-based Spectroscopy of K648 in M15
• Physics
• 2001
We derive some element abundances for the central star of the planetary nebula K648 from analysis of Hubble Space Telescope Faint Object Spectrograph spectra (1200–3300 A). Carbon is found to be
Hubble Space Telescope Observations of the Planetary Nebula K648 in the Globular Cluster M15
• Physics
• 2000
We have obtained observations of the planetary nebula K648 in the Galactic globular cluster M15 with the Hubble Space Telescope's Wide Field Planetary Camera 2, covering an interval of 7 days. The
Ultraviolet Radiation from Evolved Stellar Populations. I. Models
• Physics
• 1993
This series of papers comprises a systematic exploration of the hypothesis that the far-ultraviolet radiation from star clusters and elliptical galaxies originates from extremely hot
Late stages of stellar evolution. II: Mass loss and the transition of asymptotic giant branch stars into hot remnants
We have computed the transition of asymptotic branch giants of 0.8 and 1.0 M/sub sun/ into remnants of 0.565, 0.553, and 0.546 M/sub sun/ by means of mass loss which removed the stellar envelopes in
Winds in the atmospheres of central stars of Planetary Nebulae (Invited Review)
• Physics
• 1997
For this review we have chosen to concentrate on recent progress concerning the model atmosphere analysis of stellar winds in central stars of planetary nebulae (CSPNs). Since there is another review
A Catalog of Parameters for Globular Clusters in the Milky Way
A database of parameters for globular star clusters in the Milky Way is described which is available in electronic form through the WorldWideWeb. The information in the catalog includes up-to-date
K 648, the planetary nebula in the globular cluster M15
• Physics
• 1984
IUE a ete utilise pour obtenir des spectres UV d'un champ de M15 qui contient K 648. On a mesure au Pic-du-Midi les magnitudes B et V de toutes les etoiles optiquement resolues. A partir