Central stars of galactic planetary nebulae: New spectral classifications and catalogue

WEIDMANN, W.; GAMEN, R. C.

ASTRONOMY AND ASTROPHYSICS

EDP SCIENCES S A

Año: 2011 vol. 526 p. 6 - 22

0004-6361

Context. There are more than 3000 confirmed and probable known Galactic planetary nebulae (PNe), but central star spectroscopicinformation 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 forwhich 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 centralstar of PNe. This revises previous values of the proportion of CSPN with atmospheres poor in hydrogen in at least 30% of cases andprovide statistical information that allows us to infer the origin of H-poor stars.