Martí, JosepLuque Escamilla, Pedro L.Sánchez Ayaso, EstrellaParedes, Josep M.Vázquez Ramos, Alicia2023-06-222023-06-222023-02Martí, J., Luque-Escamilla, P. L., Sánchez-Ayaso, E., Paredes, J. M., & Vázquez-Ramos, A. (2023). Hints of the photometric period in radial velocity data of the X-ray binary HD 3191 with the Joan Oró telescope. In Astrophysics and Space Science (Vol. 368, Issue 2). Springer Science and Business Media LLC. https://doi.org/10.1007/s10509-023-04164-80004-640X1572-946X (electrónico)https://hdl.handle.net/10272/22234We focus our attention on the newly proposed X-ray binary system HD 3191 whose nature still lacks dynamical confirmation and accurate orbital parameters. The positional agreement of this object with a flaring gamma-ray source was the original motivation of this work, although the present chances of association are reduced. A long-term spectroscopic monitoring of HD3191 was conducted using the 1-m class, robotic, Joan Oró telescope at the Observatori Astronòmic del Montsec facilities, located in the pre-Pyrenees mountains 140 km away from Barcelona. The Doppler measurements suggest an agreement with the previously reported 16.09 d photometric period, as expected. We also present a very preliminary radial velocity curve based on a circular orbit solution that hints to a low velocity amplitude. Nevertheless, the instrumental limitations of our data render necessary to carry out improved spectroscopic observations to better discriminate among the nature of the compact companion.engAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/Gamma rays: starsX-rays: binariesStars: emission line, BeStars: individual: HD 3191Techniques: spectroscopicjournal article10.1007/s10509-023-04164-8open access22 Física