Central stars of planetary nebulae: New spectral classifications and catalogue
Abstract
Context. There are more than 3000 confirmed and probable known Galactic planetary nebulae (PNe), but central star spectroscopic information is available for only 13% of them.
Aims: We undertook a spectroscopic survey of central stars of PNe at low resolution and compiled a large list of central stars for which information was dispersed in the literature.
Methods: We observed 45 PNs using the 2.15 m telescope at Casleo, Argentina.
Results: We present a catalogue of 492 confirmed and probable CSPN and provide a preliminary spectral classification for 45 central star of PNe. This revises previous values of the proportion of CSPN with atmospheres poor in hydrogen in at least 30% of cases and provide statistical information that allows us to infer the origin of H-poor stars.
Based on data collected at the Complejo Astronómico El Leoncito (CASLEO), which is operated under agreement between the Consejo Nacional de Investigaciones Científicas y Técnicas de la República Argentina y Universidades Nacionales de La Plata, Córdoba y San Juan, Argentina.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- February 2011
- DOI:
- arXiv:
- arXiv:1010.5376
- Bibcode:
- 2011A&A...526A...6W
- Keywords:
-
- surveys;
- planetary nebulae: general;
- stars: evolution;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- 19 pages, 1 figure, accepted to be published in A&
