New runaway O-type stars in the first Gaia Data Release

Maíz Apellániz, Jesús; Barbá, Rodolfo H.; Simón-Díaz, Sergio; Negueruela, Ignacio; Trigueros Páez, Emilio
The Lives and Death-Throes of Massive Stars, Proceedings of the International Astronomical Union, IAU Symposium, Volume 329, pp. 136-140 (2017).


We have detected 13 new runaway-star candidates of spectral type O combining the TGAS (Tycho-Gaia Astrometric Solution) proper motions from Gaia Data Release 1 (DR1) and the sample from GOSSS (Galactic O-Star Spectroscopic Survey). We have also combined TGAS and Hipparcos proper motions to check that our technique recovers many of the previously known O-type runaways in the sample.