New constraint of the Hubble constant by proper motions of radio components observed in AGN twin-jets
Sign Up to like & getrecommendations! Published in 2021 at "Research in Astronomy and Astrophysics"
DOI: 10.1088/1674-4527/21/10/261
Abstract: As the advent of precision cosmology, the Hubble constant (H 0) inferred from the Lambda Cold Dark Matter fit to the Cosmic Microwave Background data is increasingly in tension with the measurements from the local… read more here.
Keywords: motions radio; components observed; hubble constant; radio components ... See more keywords
A ground-based proper motion study of 12 nearby globular clusters
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stx1637
Abstract: We derive relative proper motions of stars in the fields of the globular clusters M12, NGC 6362, M4, M55, M22, NGC 6752, NGC 3201, M30, M10, NGC 362, M5, and 47 Tucanae based on data… read more here.
Keywords: ground based; motion study; based proper; proper motions ... See more keywords
Trigonometric distance and proper motions of H2O maser bowshocks in AFGL 5142
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stx216
Abstract: We present the results of multi-epoch VLBI observations of water masers in the AGFL 5142 massive star forming region. We measure an annual parallax of $\pi=0.467 \pm 0.010$ mas, corresponding to a source distance of… read more here.
Keywords: afgl 5142; distance; trigonometric distance; proper motions ... See more keywords
The internal rotation of globular clusters revealed by Gaia DR2
Sign Up to like & getrecommendations! Published in 2018 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/sty2365
Abstract: Line-of-sight kinematic studies indicate that many Galactic globular clusters have a significant degree of internal rotation. However, three-dimensional kinematics from a combination of proper motions and line-of-sight velocities are needed to unveil the role of… read more here.
Keywords: internal rotation; proper motions; rotation; line sight ... See more keywords
Differential astrometric framework for the Jupiter relativistic experiment with Gaia
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz452
Abstract: We employ differential astrometric methods to establish a small field reference frame stable at the microarcsecond (μas) level on short time-scales using high-cadence simulated observations taken by Gaia in 2017 February of a bright star… read more here.
Keywords: jupiter; gaia; differential astrometric; relativistic experiment ... See more keywords