A new, Gaia based, catalogue of blue straggler stars in open clusters

Abstract

Blue straggler stars are exotic objects present in all stellar environments whose nature and formation channels are still partially unclear. They seem to be particularly abundant in open clusters (OCs), thus offering a unique chance to tackle these problems statistically.We aim to build up a new and homogeneous catalogue of blue straggler stars (BSS) in Galactic OCs using Gaia to provide a more solid assessment of the membership of these stars. We also aim to explore possible relationships of the straggler abundance with the parent cluster's structural and dynamical parameters. As a by-product, we also search for possible yellow straggler stars (YSS), which are believed to be stragglers in a more advanced evolution stage. We employed photometry, proper motions, and parallaxes extracted from Gaia DR2 for 408 Galactic star clusters and searched for stragglers within them after performing a careful membership analysis. The number of BBS emerging from our more stringent, selection criteria turns out to be significantly smaller than in previous versions of this catalogue. OCs are therefore not a preferable environment for these kinds of stars anymore. In addition, we found that BSS start to appear in clusters with ages larger than log(t) ~ 8.7 and are therefore absent in very young star clusters.The present catalogue supersedes the previous ones in several ways: membership assessment, number of stragglers found, and so forth. The new list includes 897 BSS and 77 YSS candidates in 408 OCs. We expect this catalogue to be the basis for a new round of studies of BSS and YSS.

arXiv comment9 pages, 4 figures, accepted for publication in A&A Journal on 22/02/2021

References in corpus (45)

• Gaia Data Release 2. Summary of the contents and survey properties
• PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
• Gaia Data Release 2: The astrometric solution
• New catalogue of optically visible open clusters and candidates
• Gaia Data Release 2: Photometric content and validation
• A Gaia DR2 view of the Open Cluster population in the Milky Way
• Gaia Data Release 2: Catalogue validation
• The ACS Survey of Galactic Globular Clusters. XII. Photometric Binaries along the Main-Sequence
• Clusters and mirages: cataloguing stellar aggregates in the Milky Way
• On the triple origin of blue stragglers
• Age determination for 269 $Gaia$ DR2 Open Clusters
• Mergers and Obliquities in Stellar Triples
• Dynamical age differences among coeval star clusters as revealed by blue stragglers
• Gaia Data Release 2: Properties and validation of the radial velocities
• Relative Frequencies of Blue Stragglers in Galactic Globular Clusters: Constraints for the Formation Mechanisms
• The Frequency of Binary Stars in the Core of 47 Tucanae
• WIYN Open Cluster Study XXXII: Stellar Radial Velocities in the Old Open Cluster NGC 188
• The radial distribution of blue straggler stars and the nature of their progenitors
• The blue plume population in dwarf spheroidal galaxies: genuine blue stragglers or young stellar population?
• Implications for the Formation of Blue Straggler Stars from HST Ultraviolet Observations of NGC 188
• Open clusters in APOGEE and GALAH: Combining Gaia and ground-based spectroscopic surveys
• Detection of white dwarf companions to blue stragglers in the open cluster NGC 188: direct evidence for recent mass transfer
• Mergers of close primordial binaries
• The blue stragglers formed via mass transfer in old open clusters
• The small Blue Straggler star population in the dense Galactic Globular Cluster NGC 6752
• The Blue Straggler RS CVn Star S1082 in M67: A Detailed Light Curve and the Possibility of a Triple
• Primordial Binary Evolution and Blue Stragglers
• The surprising external upturn of the Blue Straggler radial distribution in M55
• Binary coalescence from case A evolution -- mergers and blue stragglers
• Ecology of Blue Straggler Stars
• The Blue Straggler and Main-sequence Binary Population of the Low-Mass Globular Cluster Palomar 13
• A Census of Blue Stragglers in Gaia DR2 Open Clusters as a Test of Population Synthesis and Mass Transfer Physics
• Structural parameters and blue stragglers in Sagittarius dwarf spheroidal galaxy globular clusters
• Blue Straggler Populations of Seven Open Clusters with Gaia DR2
• The K2 M67 Study: An Evolved Blue Straggler in M67 from K2 Mission Asteroseismology
• The Frequency of Field Blue-Straggler Stars in the Thick Disk and Halo System of the Galaxy
• CCD UBV photometric and Gaia astrometric study of eight open clusters- ASCC 115, Collinder 421, NGC 6793, NGC 7031, NGC 7039, NGC 7086, Roslund 1 and Stock 21
• The Blue Stragglers of the Old Open Cluster NGC 188
• Blue Straggler Stars in Galactic Open Clusters and the effect of field star contamination
• The blue straggler population of the old open cluster Berkeley 17
• A study of the blue straggler population of the old open cluster Collinder 261
• High-resolution X-ray spectroscopy of Theta Car
• Updated properties of the old open cluster Melotte 66: Searching for multiple stellar populations
• The blue straggler population of the open clusters Trumpler 5, Trumpler 20, and NGC 2477
• Trumpler 20 - an old and rich open cluster

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• The origin of early-type runaway stars from open clusters
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• WOCS 4540: Detailed Analysis of a Very Long Orbital Period Blue Straggler
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• Blue Stragglers and Friends: Initial Evolutionary Pathways in Close Low-Mass Binaries: Literature Review
• The longevity of the oldest open clusters: Structural parameters of NGC 188, NGC 2420, NGC 2425, NGC 2682, NGC 6791, NGC 6819
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• Discovery of double BSS sequences in the old Galactic open cluster Berkeley 17
• A deep investigation of two poorly studied open clusters Haffner 22 and Melotte 71 in Gaia era
• Study of Open Star Clusters Using the Gaia DR3: I- Poorly Studied King 2 and King 5
• Impact of stellar population synthesis choices on forward modelling-based redshift distribution estimates
• UOCS-IX. AstroSat/UVIT study of the open cluster NGC 2818: Blue Stragglers, Yellow Stragglers, Planetary Nebula, and their membership
• WIYN Open Cluster Study. XC. Radial-velocity Measurements and Spectroscopic Binary Orbits in the Open Cluster NGC 2506
• A comprehensive photometric and kinematical characteristic of the newly discovered QCs clusters with Gaia EDR3
• A fast-rotating blue straggler star in the tidal tail of the open cluster NGC 752
• A Gaia based photometric and kinematic analysis of the old open cluster King 11
• Investigating kinematics and dynamics of three open clusters towards Galactic anti-center
• Variable Blue Straggler Stars in Open Cluster NGC 6819 Observed in the Kepler 'Superstamp' Field
• A uvbyCaHbeta CCD Analysis of the Open Cluster Standard, M67,and its Relation to NGC 752
• Detection of a white dwarf orbiting a Carbon-Oxygen depleted blue straggler in 47 Tucanae
• First direct detection of an RR Lyrae star conclusively associated with an intermediate-age cluster
• A rotation-based census of blue lurker candidates in open clusters
• LAMOST medium-resolution spectroscopic survey of Galactic Open Clusters (LAMOST-MRS-O): An overview of survey plan and preliminary results
• Isochrone-cloud fitting and asteroseismology of the Kepler open cluster NGC6866
• Dynamical Evolution of The Open Clusters Collinder 110 and NGC 2477