High mass X-ray binaries (HMXBs) are important laboratories where to study the characteristics of the accretion processes and the nature of compact objects. For this reason, we have started the determination of the fundamental properties (mass, radius, temperature, etc.) of the optical components in four systems: 2S 0114+65, IGR J00370+6122, XTE
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Fundamental properties of high mass X-ray binariesVilardel, F. et al.112011
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Fundamental Properties of Stars Using Asteroseismology from Kepler and CoRoT and Interferometry from the CHARA Array
We present results of a long-baseline interferometry campaign using the PAVO beam combiner at the CHARA Array to measure the angular sizes of five main-sequence stars, one subgiant and four red giant stars for which solar-like oscillations have been detected by either Kepler or CoRoT. By combining interferometric angular diameters, Hipparcos
Huber, D. et al.Fecha de publicación:
112012 -
Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
Context. At about 1000 days after the launch of Gaia we present the first Gaia data release, Gaia DR1, consisting of astrometry and photometry for over 1 billion sources brighter than magnitude 20.7. Aims: A summary of Gaia DR1 is presented along with illustrations of the scientific quality of the data, followed by a discussion of the limitations
Gaia Collaboration et al.Fecha de publicación:
112016 -
Gaia DR2 proper motions of dwarf galaxies within 420 kpc. Orbits, Milky Way mass, tidal influences, planar alignments, and group infall
A proper understanding of the Milky Way (MW) dwarf galaxies in a cosmological context requires knowledge of their 3D velocities and orbits. However, proper motion (PM) measurements have generally been of limited accuracy and are available only for more massive dwarfs. We therefore present a new study of the kinematics of the MW dwarf galaxies. We
Fritz, T. K. et al.Fecha de publicación:
112018 -
Gaia DR2 reveals a very massive runaway star ejected from R136
A previous spectroscopic study identified the very massive O2 III star VFTS 16 in the Tarantula Nebula as a runaway star based on its peculiar line-of-sight velocity. We use the Gaia DR2 catalog to measure the relative proper motion of VFTS 16 and nearby bright stars to test if this star might have been ejected from the central cluster, R136, via
Lennon, D. J. et al.Fecha de publicación:
112018 -