2 papers
astro-ph.GA2020
Spectroscopic classification of a complete sample of astrometrically-selected quasar candidates using Gaia DR2
K. E. Heintz, J. P. U. Fynbo, S. J. Geier +20
Here we explore the efficiency and fidelity of a purely astrometric selection of quasars as point sources with zero proper motions in the {\it Gaia} data release 2 (DR2). We have b…
astro-ph.SR2020
High-resolution spectroscopic study of massive blue and red supergiants in Per OB1
A. de Burgos, S. Simón-Díaz, D. J. Lennon +5
The Perseus OB1 association hosts one of the most populous groupings of blue and red supergiants (Sgs) in the Galaxy. We discuss whether the massive O-type and blue/red Sg stars lo…