Search Publications
Frequency of Planets in Binaries
Bonavita, Mariangela; Desidera, Silvano
The frequency of planets in binaries is an important issue in the field of extrasolar planet studies because of its relevance in the estimation of the global planet population of our galaxy and the clues it can give to our understanding of planet formation and evolution. Multiple stars have often been excluded from exoplanet searches, especially t…
Gaia DR2 Distances to Planetary Nebulae
Manteiga, Minia; Dafonte, Carlos; Manchado, Arturo +2 more
The aim of this work is to examine distances to planetary nebulae (PNe) together with other properties that were derived from them, using the astrometry of Gaia Data Release 2 (DR2). We were able to identify 1571 objects classified as PNe, for which we assumed distances calculated following a Bayesian statistical approach. From those objects, we s…
On the Age of Galactic Bulge CSPNe: Too Young and Complicated?
Parker, Quentin A.; Lykou, Foteini; Zijlstra, Albert
We present preliminary results of our study of a small sample of planetary nebulae in the Galactic Bulge for which high-angular resolution Hubble Space Telescope imaging is available. From this and from archival spectroscopy, we were able to calculate temperatures and luminosities for their central stars. These were then correlated to up-to-date e…