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The Gaia Data Release 1 parallaxes and the distance scale of Galactic planetary nebulae
Stanghellini, Letizia; Bucciarelli, Beatrice; Lattanzi, Mario G. +1 more
In this paper we gauge the potentiality of Gaia in the distance scale calibration of planetary nebulae (PNe) by assessing the impact of DR1 parallaxes of central stars of Galactic PNe (CSPNe) against known physical relations. For selected PNe targets with state-of-the-art data on angular sizes and fluxes, we derive the distance-dependent parameter…
Orbital variations and outbursts of the unusual variable star V1129 Centauri
Bruch, Albert
The variable star V1129 Cen is classified in the GCVS as being of β Lyr type. Unusual for such stars, it exhibits outbursts roughly once a year, lasting for ∼ 40 days. For this reason, a relationship to the dwarf novae has been suspected. Here, for the first time a detailed analysis of the light curve of the system is presented. Based on observati…