Back to Volume
Paper: Gould's Belt: As Seen in Gaia DR2
Volume: 519, Radiative Signatures from the Cosmos
Page: 169
Authors: Palouš, J.; Ehlerová, S.; Ron, C.
Abstract: The space distribution and motion of young stars within 1 kpc is analysed using Gaia DR2 data. Our analysis shows a system of young O – B2 stars inclined to the Galaxy symmetry plane known as the Gould's Belt, but a local hole seen in previous studies is missing. The average motion of the young stars relative to the Local Standard of Rest does not deviate from motion of other stars, but their velocity field deviates from regular galactic differential rotation. In regions of OB associations, we see local expansions. The computation of orbits in the gravitational potential of the Galaxy shows that Orion and Scorpius-Centaurus OB associations were in the past closer together. We also see the close past encounter of two high velocity stars HD 54669 and HD 52463 in the region near to Vela OB association.
Back to Volume