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Gaia23ckh: Symbiotic outburst of the assumed Mira variable V390 Sco
Skowron, Jan; Charbonnel, Stéphane; Garde, Olivier +5 more
The poorly studied variable star V390 Sco, previously classified as a Mira pulsator, was detected in a brightening event by the ESA Gaia satellite in September 2023. This work presents an analysis of available archival multifrequency photometric data of this target, along with our spectroscopic observations. Our findings lead to the conclusion tha…
Measurements of visual double stars with PISCO2 at the Nice 76-cm refractor in 2016-2017
Piccotti, Luca; Rivet, Jean-Pierre; Vakili, Farrokh +11 more
We present relative astrometric and photometric measurements of visual double stars made in 2016-2017, with PISCO2 installed at the 76-cm refractor of Côte d'Azur Observatory in Nice (France). Our observing list contains orbital couples as well as double stars whose motion is still uncertain. Three different techniques were used for obtaining meas…
The deep eclipses of RW Aur revisited by long-term photometric and spectroscopic monitoring
Mugrauer, Markus; Lux, Oliver; Bischoff, Richard
RW Aurigae is a young stellar system containing a classical T Tauri star as the primary component. It shows deep, irregular dimmings, first detected in 2010. At the University Observatory Jena, we carried out optical follow-up observations. We performed multiband (BVRI) photometry of the system with the Cassegrain-Teleskop-Kamera II and the Schmid…
HX Velorum: Ellipsoidal/Rotational Binary With β Cep Type Component
Gürol, B.
We present the Transiting Exoplanet Survey Satellite (TESS) light curve analysis of HX Velorum, located in the Southern Hemisphere, where one of the components is found for the first time to be a β$$ \beta $$ Cep (BCEP) type pulsator. The TESS observations of HX Velorum were published in a total of 6 sectors. Fourier analysis of the observations r…