A deep investigation of two poorly studied open clusters Haffner 22 and Melotte 71 in Gaia era
arXiv:2203.16459 · doi:10.1088/1538-3873/ac6195
Abstract
This paper presents a deep investigation of two open clusters, Haffner 22 and Melotte 71, using astrometric and photometric data from Gaia EDR3. We identified 382 and 597 most probable cluster members with membership probability higher than 50 percent. Mean proper motion in RA and DEC are estimated as -1.63 and 2.889 respectively for Haffner 22 and -2.398 and 4.210 for Melotte 71. A comparison of observed CMDs with theoretical isochrones leads to an age of 2.25 and 1.27 Gyr for these clusters. The distances 2.88 and 2.28 kpc based on parallax are comparable with the values derived by isochrone fitting method. Five and four blue straggler stars are identified as cluster members in Haffner 22 and Melotte 71 respectively. Based on the relative number of high velocity (binary) and single stars, we inferred binary fractions for both clusters. We found binary content is larger in core region. Mass function slope is in good agreement with the Salpeter's value while it is flat for Haffner 22. Evidence for the existence of mass segregation effect is observed in both clusters. Using the Galactic potential models, Galactic orbits are derived, indicating that both clusters follow a circular path around the Galactic center, evolving slowly.
arXiv commentThis article contains 15 figures and 9 tables. This paper has been accepted for the publication in Publications of the Astronomical Society of the Pacific. arXiv admin note: text overlap with arXiv:2103.04596
References in corpus (52)
- PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
- Local Kinematics and the Local Standard of Rest
- Estimating distances from parallaxes IV: Distances to 1.33 billion stars in Gaia Data Release 2
- A new generation of PARSEC-COLIBRI stellar isochrones including the TP-AGB phase
- Gaia Early Data Release 3: Parallax bias versus magnitude, colour, and position
- New catalogue of optically visible open clusters and candidates
- The Proper Motion of Sgr A*: II. The Mass of Sgr A*
- Dynamical evolution of star clusters in tidal fields
- Global survey of star clusters in the Milky Way II. The catalogue of basic parameters
- A Gaia DR2 view of the Open Cluster population in the Milky Way
- Gaia Data Release 2: Catalogue validation
- Painting a portrait of the Galactic disc with its stellar clusters
- Estimating distances from parallaxes
- The ACS Survey of Galactic Globular Clusters. XII. Photometric Binaries along the Main-Sequence
- A Halo-Based Galaxy Group Finder: Calibration and Application to the 2dFGRS
- Inverse Dynamical Population Synthesis and Star Formation
- Evolution of Thermally Pulsing Asymptotic Giant Branch Stars I. The COLIBRI Code
- Clusters and mirages: cataloguing stellar aggregates in the Milky Way
- The Dynamical Properties of Stellar Systems in the Galactic Disc
- Dynamical mass segregation on a very short timescale
- Age determination for 269 DR2 Open Clusters
- A catalog of newly identified star clusters in GAIA DR2
- The Primordial Binary Population - I: A near-infrared adaptive optics search for close visual companions to A star members of Scorpius OB2
- Star Cluster Evolution, Dynamical Age Estimation and the Kinematical Signature of Star Formation
- Limits on the primordial stellar multiplicity
- WIYN Open Cluster Study. XLVIII. The Hard-Binary Population of NGC 188
- Collisions of Main-Sequence Stars and the Formation of Blue Stragglers in Globular Clusters
- The Origin of the Arches Stellar Cluster Mass Function
- Structure and mass segregation in Galactic stellar clusters
- A new, Gaia based, catalogue of blue straggler stars in open clusters
- The nature of the young and low-mass open clusters Pismis5, vdB80, NGC1931 and BDSB96
- A Multi-Membership Catalogue for 1876 Open Clusters using UCAC4 data
- Star formation activity and the spatial distribution and mass segregation of dense cores in the early phases of star formation
- Fundamental parameters for 45 open clusters with Gaia DR2, an improved extinction correction and a metallicity gradient prior
- Discovery and astrophysical properties of Galactic open clusters in dense stellar fields using Gaia DR2
- The construction of non-spherical models of quasi-relaxed stellar systems
- Analysis of the Z Distribution of Young Objects in the Galactic Thin Disk
- The evolution of the binary population in globular clusters: a full analytical computation
- Astrometric and photometric study of NGC 6067, NGC 2506 and IC 4651 open clusters based on wide-field ground and Gaia DR2 data
- Multiplicity and period distribution of Population II field stars in solar vicinity
- Astrometric and photometric study of Dias 4, Dias 6 and other five open clusters using ground based and Gaia DR2 data
- A Comprehensive study of open clusters Czernik 14, Haffner 14, Haffner 17 and King 10 using multicolour photometry and Gaia DR2 astrometry
- Proper motion measurements as indicators of binarity in open clusters
- An investigation of poorly studied open cluster NGC 4337 using multi-color photometric and Gaia DR2 astrometric data
- CCD photometric and mass function study of 9 young Large Magellanic Cloud star clusters
- Multi-colour photometry and Gaia EDR3 astrometry of two couples of binary clusters (NGC 5617 and Trumpler 22) and (NGC 3293 and NGC 3324)
- A comprehensive analysis of NGC 2158 in Gaia era: photometric parameters, apex and orbit
- On the mass segregation of cores and stars
- The complex stellar populations in the lines of sight to open clusters in the third Galactic quadrant
- Primordial mass segregation of star clusters with primordial binaries
- Detailed analysis of the poorly studied northern open cluster NGC 1348 using multi-color photometry and GAIA EDR3 astrometry
- uvbyCa H beta CCD Photometry of Clusters. VII. The Intermediate-Age Anticenter Cluster Melotte 71