info:eu-repo/semantics/article
Catalogue of the central stars of planetary nebulae: Expanded edition
Fecha
2020-08Registro en:
Weidmann, Walter Alfredo; Mari, M. B.; Schmidt, Eduardo Osvaldo; Gaspar, Gaia; Miller Bertolami, Marcelo Miguel; et al.; Catalogue of the central stars of planetary nebulae: Expanded edition; EDP Sciences; Astronomy and Astrophysics; 640; 8-2020; 1-54
0004-6361
CONICET Digital
CONICET
Autor
Weidmann, Walter Alfredo
Mari, M. B.
Schmidt, Eduardo Osvaldo
Gaspar, Gaia
Miller Bertolami, Marcelo Miguel
Oio, Gabriel Andrés
Gutiérrez Soto, L. A.
Volpe, Maria Gabriela
Gamen, Roberto Claudio
Mast, Damian
Resumen
Planetary nebulae represent a potential late stage of stellar evolution, however, their central stars (CSPNe) are relatively faint and, therefore, pertinent information is available for merely < 20 of the Galactic sample. Consequently, the literature was surveyed to construct a new catalogue of 620 CSPNe featuring important spectral classifications and information. The catalogue supersedes the existing iteration by 25 and includes physical parameters such as luminosity, surface gravity, temperature, magnitude estimates, and references for published spectra. The marked statistical improvement enabled the following pertinent conclusions to be determined: the H-rich/H-poor ratio is 2:1, there is a deficiency of CSPNe with types [WC 5-6], and nearly 80 of binary central stars belong to the H-rich group. The last finding suggests that evolutionary scenarios leading to the formation of binary central stars interfere with the conditions required for the formation of H-poor CSPN. Approximately 50 of the sample with derived values of log L⋆ , log Teff, and log g, exhibit masses and ages consistent with single stellar evolutionary models. The implication is that single stars are indeed able to form planetary nebulae. Moreover, it is shown that H-poor CSPNe are formed by higher mass progenitors. The catalogue is available through the Vizier database.