Publications (39)
Visible and near-infrared observations of interstellar comet 2I/Borisov with the 10.4-m GTC and the 3.6-m TNG telescopes
J. de León, J. Licandro, C. de la Fuente Marcos +15
In this work, we present the results of an observational study of 2I/Borisov carried out with the 10.4-m Gran Telescopio Canarias (GTC) and the 3.6-m Telescopio Nazionale Galileo (…
Challenging a Newtonian prediction through Gaia wide binaries
X. Hernandez, R. A. M. Cortés, C. Allen +1
Under Newtonian dynamics, the relative motion of the components of a binary star should follow a Keplerian scaling with separation. Once orientation effects and a distribution of e…
The circum-galactic medium of quasars: CIV absorption systems
M. Landoni, R. Falomo, A. Treves +2
We investigate the properties of the circumgalactic gas in the halo of quasar host galaxies from CIV absorption line systems. Optical spectroscopy of closely aligned pairs of quasa…
HST Observations of the Optical Jets of PKS 0521-365, 3C371, and PKS 2201+044
R. Scarpa, C. M. Urry, R. Falomo +1
HST observations have led to the discovery of the optical counterpart of the radio jet of PKS 2201+044, and to a detailed analysis of the optical jets of PKS 0521-365 and 3C371. At…
ESO-VLT optical spectroscopy of BL Lac objects: II. New redshifts, featureless objects and classification assessments
B. Sbarufatti, A. Treves, R. Falomo +3
We report on ESO Very Large Telescope optical spectroscopy of 42 BL Lacertae objects of unknown redshift. Nuclear emission lines were observed in 12 objects, while for another six…
Reclassification of the nearest quasar pair candidate: SDSS J15244+3032 - RXS J15244+3032
E. P. Farina, R. Falomo, A. Treves +3
We present optical spectroscopy of the nearest quasar pair listed in the 13th edition of the Veron-Cetty & Veron catalogue, i.e. the two quasars SDSS J15244+3032 and RXS J15244+303…