Re-reduction of CCD astrometric observations of Neptunian satellites in 2006–2007 based on Gaia DR2 and comparison with ephemerides
Sign Up to like & getrecommendations! Published in 2019 at "Planetary and Space Science"
DOI: 10.1016/j.pss.2018.10.007
Abstract: Abstract Based on the newly released Gaia DR2 star catalogue, the CCD images of Neptunian satellites taken by the telescopes at Xinglong Observatory of National Astronomical Observatory in 2006–2007 were re-reduced. A total of 174… read more here.
Keywords: ccd; neptunian satellites; gaia dr2; 2006 2007 ... See more keywords
Gaia GraL: Gaia DR2 gravitational lens systems: I. New quadruply imaged quasar candidates around known quasars
Sign Up to like & getrecommendations! Published in 2018 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201833337
Abstract: Context. Multiply imaged gravitationally lensed quasars are among the most interesting and useful observable extragalactic phenomena. Because their study constitutes a unique tool in various fields of astronomy, they are highly sought, but difficult to… read more here.
Keywords: quasar candidates; imaged quasar; gaia; quadruply imaged ... See more keywords
Sixteen overlooked open clusters in the fourth Galactic quadrant
Sign Up to like & getrecommendations! Published in 2020 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201937141
Abstract: Aims: This paper has two main objectives: (1) To determine the intrinsic properties of 16 faint and mostly unstudied open clusters in the poorly known sector of the Galaxy at 270$^\circ-$300$^\circ$, to probe the Milky… read more here.
Keywords: overlooked open; gaia dr2; sixteen overlooked; clusters fourth ... See more keywords
Kinematic study of the association Cyg OB3 with Gaia DR2
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1217
Abstract: We study the stellar kinematic properties and spatial distribution of the association Cyg OB3 using precise astrometric data from Gaia DR2. All known O- and B-type stars in Cyg OB3 region with positions, parallaxes, and proper motions… read more here.
Keywords: cyg ob3; association cyg; gaia dr2; velocity ... See more keywords
Testing dark matter and geometry sustained circular velocities in the Milky Way with Gaia DR2
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1511
Abstract: Flat rotation curves in disk galaxies represent the main evidence for large amounts of surrounding dark matter. Despite of the difficulty in identifying the dark matter contribution to the total mass density in our Galaxy,… read more here.
Keywords: dark matter; gaia dr2; circular velocities; geometry ... See more keywords
Empirical completeness assessment of the Gaia DR2, Pan-STARRS 1, and ASAS-SN-II RR Lyrae catalogues
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1676
Abstract: RR Lyrae stars are an important and widely used tracer of the most ancient populations of our Galaxy, mainly due to their standard candle nature. The availability of large scale surveys of variable stars is… read more here.
Keywords: completeness; lyrae; lyrae catalogues; gaia dr2 ... See more keywords
Li-rich giant stars under scrutiny: binarity, magnetic activity, and the evolutionary status after Gaia DR2
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa2408
Abstract: We present a study of the evolutionary state of a few lithium-rich giant stars based on the Gaia DR2 parallaxes and photometry. We also investigate the chromospheric activity, the presence of a surface magnetic field,… read more here.
Keywords: magnetic field; giant stars; rich giant; gaia dr2 ... See more keywords
Identifying resonances of the Galactic bar in Gaia DR2: II. Clues from angle space
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab2866
Abstract: The Milky Way disk exhibits intricate orbit substructure of still-debated dynamical origin. The angle variables (θφ, θR)—which are conjugates to the actions (Lz, JR), and describe a star’s location along its orbit—are a powerful diagnostic… read more here.
Keywords: angle space; bar; gaia dr2; galactic bar ... See more keywords
The substructure of the Perseus star-forming region: a survey with Gaia DR2
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab352
Abstract: We use photometric and kinematic data from Gaia DR2 to explore the structure of the star forming region associated with the molecular cloud of Perseus. Apart from the two well known clusters, IC 348 and… read more here.
Keywords: ngc 1333; gaia dr2; forming region; star forming ... See more keywords
New members of Cygnus OB2 from Gaia DR2
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab457
Abstract: Due to the high quality of Gaia DR2 stellar parallaxes and proper motions, we can study the Cygnus OB2 region up to G = 17.5 mag in circular region centred at (l, b) = (79.8°,… read more here.
Keywords: gaia dr2; new members; region; proper motion ... 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