Characterizing dynamical states of Galactic open clusters with Gaia DR2

  title={Characterizing dynamical states of Galactic open clusters with Gaia DR2},
  author={Mateus S Angelo and W J B Corradi and J. F. C. Santos and Francisco F S Maia and F A Ferreira},
  journal={arXiv: Astrophysics of Galaxies},
In this work, we investigate the dynamical properties of 38 Galactic open clusters: 34 of them are located at low Galactic latitudes (|b| < 10$^{\circ}$) and are projected against dense stellar fields; the other 4 comparison objects present clearer contrasts with the field population. We determine structural and time-related parameters that are associated with the clusters' dynamical evolution: core ($r_c$), tidal ($r_t$) and half-mass ($r_{hm}$) radii, ages ($t$) and crossing times ($t_{cr… 

Photometric and Kinematic Study of the Open Clusters SAI 44 and SAI 45

We carry out a detailed photometric and kinematic study of the poorly studied sparse open clusters SAI 44 and SAI 45 using ground-based BVR c I c data supplemented by archival data from Gaia eDR3 and

New star clusters discovered towards the Galactic bulge direction using Gaia DR2

We report the discovery of 34 new open clusters and candidates as a result of a systematic search carried out in 200 adjacent fields of 1× 1 deg area projected towards the Galactic bulge, using Gaia



Gaia Data Release 2

An all-sky classification of common high-amplitude pulsators (Cepheids, long-period variables, δ Scuti/SX Phoenicis, and RR Lyrae stars) is provided for stars with brightness variations greater than 0.1 mag in G band.

Open clusters in dense fields: the importance of field‐star decontamination for NGC 5715, Lyngå 4, Lyngå 9, Trumpler 23, Trumpler 26 and Czernik 37

Star clusters projected on to dense stellar fields in general require field-star (FS) decontam- ination to confirm their nature and derive intrinsic photometric and structural fundamental parameters.

The Messenger, 147

  • 2012

Investigating dynamical properties of evolved Galactic open clusters

Context. The stellar content of Galactic open clusters is gradually depleted during their evolution as a result of internal relaxation and external interactions. The final residues of the long-term

The Gaia-ESO Survey: the inner disk, intermediate-age open cluster Trumpler 23

Context: Trumpler 23 is a moderately populated, intermediate-age open cluster within the solar circle at a Rgc ~6 kpc. It is in a crowded field very close to the Galactic plane and the

A Gaia DR2 view of the open cluster population in the Milky Way

Context. Open clusters are convenient probes of the structure and history of the Galactic disk. They are also fundamental to stellar evolution studies. The second Gaia data release contains precise

Characterising open clusters in the solar neighbourhood with the Tycho-Gaia Astrometric Solution

Context. The Tycho-Gaia Astrometric Solution (TGAS) subset of the first Gaia catalogue contains an unprecedented sample of proper motions and parallaxes for two million stars brighter than G ~ 12

Age consistency between exoplanet hosts and field stars

Transiting planets around stars are discovered mostly through photometric surveys. Unlike radial velocity surveys, photometric surveys do not tend to target slow rotators, inactive or metal-rich

Discovery of three optical open clusters in the Galaxy

We report the discovery of three optical open clusters in the Milky Way. Two clusters are in Scutum (Cluster 1 at � = 18.44 ◦ and b = −0.42 ◦ , and Cluster 2 at � = 19.60 ◦ and b = −1.02 ◦ ), thus