New runaway O-type stars in the first Gaia Data Release
J. Ma\'iz Apell\'aniz, R. H. Barb\'a, S. Sim\'on-D\'iaz, I., Negueruela, and E. Trigueros P\'aez
TL;DR
This paper identifies 13 new candidate runaway O-type stars using Gaia DR1 data, confirming the effectiveness of their method by recovering known runaways and expanding the catalog of such stars.
Contribution
The study introduces a new technique combining Gaia and Hipparcos data to detect runaway O-type stars, discovering 13 new candidates and validating the method against known cases.
Findings
13 new runaway O-type star candidates identified
Method successfully recovers known runaway stars
Demonstrates effectiveness of combining Gaia and Hipparcos data
Abstract
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.
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