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Bipolar planetary nebulae (PNe) are thought to result from binary star interactions and, indeed, tens of binary central stars of PNe have been found, in particular using photometric time-series that allow for the detection of post-common envelope systems. Using photometry at the NTT in La Silla w...


Boffin, H.M.J.Jones, D.Wesson, R.Beletsky, Y.Miszalski, B.Saviane, I.Monaco, L.Corradi, R.Santander García, M.Rodríguez-Gil, P.[When nature tries to trick us: An eclipsing eccentric close binary superposed on the central star of the planetary nebula M 3-2]When nature tries to trick us: An eclipsing eccentric close binary superposed on the central star of the planetary nebula M 3-2

PBC J2333.9-2343 is a peculiar active nucleus with two giant radio lobes and a weak blazarlike nucleus at their centre. In this work we show new optical, ultraviolet (UV), and X-ray data taken from the San Pedro Mártir telescope, the New Technology Telescope, NTT/EFOSC2, and the Swift/XRT satelli...


Hernández-García, L.Vietri, G.Panessa, F.Piconcelli, E.Chavushyan, V.Jiménez-Andrade, E.F.Bassani, L.Bazzano, A.Cazzoli, S.Malizia, A.Masetti, N.Monaco, L.Pović, M.Saviane, I.Ubertini, P.[Variable broad lines and outflow in the weak blazar PBC J2333.9-2343]Variable broad lines and outflow in the weak blazar PBC J2333.9-2343

Randich, S.Tognelli, E.Jackson, R.Jeffries, R.D.Degl'Innocenti, S.Pancino, E.Fiorentin, P.R.Spagna, A.Sacco, G.Bragaglia, A.Magrini, L.Moroni, P.G.P.Alfaro, E.Franciosini, E.Morbidelli, L.Roccatagliata, V.Bouy, H.Bravi, L.Jiménez-Esteban, F.M.Jordi, C.Zari, E.Tautvaišiene, G.Drazdauskas, A.Mikolaitis, S.Gilmore, G.Feltzing, S.Vallenari, A.Bensby, T.Koposov, S.Korn, A.Lanzafame, A.Smiljanic, R.Bayo, A.Carraro, G.Costado, M.T.Heiter, U.Hourihane, A.Jofré, P.Lewis, J.Monaco, L.Prisinzano, L.Sbordone, L.Sousa, S.G.Worley, C.C.Zaggia, S.[The Gaia -ESO Survey: Open clusters in Gaia -DR1: A way forward to stellar age calibration]The Gaia -ESO Survey: Open clusters in Gaia -DR1: A way forward to stellar age calibration

We observed six He-clump stars of the intermediate-Age stellar cluster Gaia1 with the MIKE/Magellan spectrograph. A possible extra-galactic origin of this cluster, recently discovered thanks to the first data release of the ESA Gaia mission, has been suggested, based on its orbital parameters. Ab...


Mucciarelli, A.Monaco, L.Bonifacio, P.Saviane, I.[Chemical composition of the stellar cluster Gaia1: No surprise behind Sirius]Chemical composition of the stellar cluster Gaia1: No surprise behind Sirius

Context. Stellar radial velocities play a fundamental role in the discovery of extrasolar planets and the measurement of their physical parameters as well as in the study of stellar physical properties. Aims. We investigate the impact of the solar activity on the radial velocity of the Sun usin...


Lanza, A. F.Molaro, P.Monaco, L.Haywood, R. D.[Long-term radial-velocity variations of the Sun as a star: The HARPS view]Long-term radial-velocity variations of the Sun as a star: The HARPS view

Merle, T.Van Eck, S.Jorissen, A.Van Der Swaelmen, M.Masseron, T.Zwitter, T.Hatzidimitriou, D.Klutsch, A.Pourbaix, D.Blomme, R.Worley, C.C.Sacco, G.Lewis, J.Abia, C.Traven, G.Sordo, R.Bragaglia, A.Smiljanic, R.Pancino, E.Damiani, F.Hourihane, A.Gilmore, G.Randich, S.Koposov, S.Casey, A.Morbidelli, L.Franciosini, E.Magrini, L.Jofre, P.Costado, M.T.Jeffries, R.D.Bergemann, M.Lanzafame, A.C.Bayo, A.Carraro, G.Flaccomio, E.Monaco, L.Zaggia, S.[The Gaia -ESO Survey: Double-, triple-, and quadruple-line spectroscopic binary candidates]The Gaia -ESO Survey: Double-, triple-, and quadruple-line spectroscopic binary candidates

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