J/AJ/168/156 Pleiades members from Gaia DR3 (Chulkov+, 2024) ================================================================================ Unveiling Subarcsecond Multiplicity in the Pleiades with Gaia Multicolor Photometry. Chulkov D. =2024AJ....168..156C (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Clusters, open ; Stars, double and multiple ; Photometry, G band Keywords: Open star clusters - Two-color diagrams - Visual binary stars - Gaia Abstract: The list of 409 probable cluster members down to G=15mag (m>=0.5M_{sun}_) is compiled for the two degree radius of the Pleiades, based on astrometric data from Gaia DR3 and the PPMXL catalog, along with several radial velocity surveys, including APOGEE and LAMOST. This approach allows for the inclusion of binary stars with unreliable Gaia solutions, thereby eliminating associated bias. Thus, the often-neglected 14 sources with Gaia two-parameter solutions are included. The subsequent analysis of color-magnitude and color-color diagrams exploits artifacts in Gaia photometric data, caused by the different field sizes used to measure fluxes in the G, Bp, and Rp passbands, to reveal binary stars with subarcsecond angular separation. The findings are validated with prior high- resolution observations. Overall, 24+/-3 cluster members with angular separation between 0.1" and 1" (13.5-135au projected distance) and mass ratio q>0.5 are deemed binary, indicating a binarity fraction of 6+/-1%. Description: List of surveyed Pleiades members, Gaia DR3 sources with G<15mag in the two degree radius are considered. Objects: ---------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------- 03 46 24.24 +24 06 50.4 Pleiades = Cl Melotte 22 ---------------------------------------------------- File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table2.dat 87 423 List of surveyed Pleiades members -------------------------------------------------------------------------------- See also: I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022) J/ApJ/926/132 : Pleiades members&escapee candidates with Gaia EDR3 (Heyl+, 2022) J/A+A/659/A59 : Structural parameters of 389 local open clusters (Tarricq+,2022) J/ApJS/262/7 : 886 nearby star clusters (He+, 2022) J/A+A/675/A68 : ML tool for open cluster membership (van Groeningen+, 2023) J/A+A/673/A114 : Improving the open cluster census. II. (Hunt & Reffert, 2023) J/ApJS/268/30 : Open clusters in K2-Gaia DR3. I. Membership & rot. (Long+, 2023) J/A+A/678/A75 : Young nearby open clusters members photometry (Zerjal+, 2023) J/ApJ/921/117 : 43yr spectrosc. monitoring of the Pleiades region (Torres+,2021) J/MNRAS/506/150 : The GALAH+ Survey DR3 (Buder+, 2021) Byte-by-byte Description of file: table2.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 17 I17 -- GaiaDR3 Gaia DR3 designation 19- 24 F6.3 mag Gmag ? Gaia DR3 G magnitude 26- 31 F6.3 -- RUWE ? Gaia DR3 RUWE 33- 38 F6.3 mas/yr rel-PM ? Relative proper motion 40- 44 F5.2 -- delta-plx ? Parallax deviation 46- 49 F4.1 km/s delta-RV ? Radial velocity deviation 51- 59 A9 -- RV-cat ? Data source of radial velocity (1) 61- 64 F4.2 arcsec Sep ? Nearest Gaia DR3 source separation 66- 71 F6.3 mag Gmag-n ? Nearest Gaia DR3 source G magnitude 73 I1 -- Heyl Membership from Heyl et al., 2022ApJ...926..132H, Cat. J/ApJ/926/132 (2) 75 I1 -- Tarricq Membership from Tarricq et al., 2022A&A...659A..59T, Cat. J/A+A/659/A59 (2) 77 I1 -- He Membership from He et al., 2022ApJS..262....7H, Cat. J/ApJS/262/7 (2) 79 I1 -- Hunt Membership from Hunt & Reffert, 2023A&A...673A.114H, Cat. J/A+A/673.A114 (2) 81 I1 -- Groeningen Membership from van Groeningen et al., (2023A&A...675A..68V) (2) 83 I1 -- Long Membership from Long et al., 2023ApJS..268...30L, Cat. J/ApJS/268/30 (2) 85 I1 -- Zerjal Membership from Zerjal et al., 2023A&A...678A..75Z, Cat. J/A+A/678/A75 (2) 87 I1 -- Member [0/2] Membership from this this work (2) -------------------------------------------------------------------------------- Note (1): References: Gaia = from Gaia DR3 (2023A&A...674A...5K) CfA = from Torres+, 2021 (2021ApJ...921..117T) SDSS = from SDSS DR 17 (2022ApJS..259...35A) Galah_sme = rv_sme_v2 from Galah+ DR3 (2021MNRAS.506..150B) Galag_nog = rv nogr obst from Galah+ DR3 (2021MNRAS.506..150B) MRS_lasp = rv lasp1 from LAMOST DR9 version 1.1 (2012RAA....12.1197C) MRS_B = rv_b1 from LAMOST DR9 version 2.0 (2012RAA....12.1197C) MRS_R = rv_r1 from LAMOST DR9 version 2.0 (2012RAA....12.1197C) MRS_BR = rv_rb1 from LAMOST DR9 version 2.0 (2012RAA....12.1197C) LRS = LAMOST DR9 version 2.0 (2012RAA....12.1197C) Note (2): Membership code as follows: 0 = Not included in the member list; 1 = Adopted member, membership probability not less than 0.5; 2 = Estimated membership probability below 0.5, or former (escaped) member -------------------------------------------------------------------------------- Acknowledgements: Dmitry Chulkov, chulkovd(at)gmail.com ================================================================================ (End) Patricia Vannier [CDS] 09-Oct-2024