J/AJ/168/156 Pleiades members from Gaia DR3 (Chulkov+, 2024)
Unveiling Subarcsecond Multiplicity in the Pleiades
with Gaia Multicolor Photometry.
Chulkov D.
<Astron. J., 168, 156 (2024)>
=2024AJ....168..156C 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☉) 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:
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RA (2000) DE Designation(s)
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03 46 24.24 +24 06 50.4 Pleiades = Cl Melotte 22
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 87 423 List of surveyed Pleiades members
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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
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Bytes Format Units Label Explanations
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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 2022ApJ...926..132H, Cat. J/ApJ/926/132 (2)
75 I1 -- Tarricq Membership from Tarricq et al.,
2022A&A...659A..59T 2022A&A...659A..59T, Cat. J/A+A/659/A59 (2)
77 I1 -- He Membership from He et al.,
2022ApJS..262....7H 2022ApJS..262....7H, Cat. J/ApJS/262/7 (2)
79 I1 -- Hunt Membership from Hunt & Reffert,
2023A&A...673A.114H 2023A&A...673A.114H, Cat. J/A+A/673.A114 (2)
81 I1 -- Groeningen Membership from van Groeningen et al.,
(2023A&A...675A..68V 2023A&A...675A..68V) (2)
83 I1 -- Long Membership from Long et al.,
2023ApJS..268...30L 2023ApJS..268...30L, Cat. J/ApJS/268/30 (2)
85 I1 -- Zerjal Membership from Zerjal et al.,
2023A&A...678A..75Z 2023A&A...678A..75Z, Cat. J/A+A/678/A75 (2)
87 I1 -- Member [0/2] Membership from this this work (2)
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Note (1): References:
Gaia = from Gaia DR3 (2023A&A...674A...5K 2023A&A...674A...5K)
CfA = from Torres+, 2021 (2021ApJ...921..117T 2021ApJ...921..117T)
SDSS = from SDSS DR 17 (2022ApJS..259...35A 2022ApJS..259...35A)
Galah_sme = rvsmev2 from Galah+ DR3 (2021MNRAS.506..150B 2021MNRAS.506..150B)
Galag_nog = rv nogr obst from Galah+ DR3 (2021MNRAS.506..150B 2021MNRAS.506..150B)
MRS_lasp = rv lasp1 from LAMOST DR9 version 1.1 (2012RAA....12.1197C 2012RAA....12.1197C)
MRS_B = rv_b1 from LAMOST DR9 version 2.0 (2012RAA....12.1197C 2012RAA....12.1197C)
MRS_R = rv_r1 from LAMOST DR9 version 2.0 (2012RAA....12.1197C 2012RAA....12.1197C)
MRS_BR = rv_rb1 from LAMOST DR9 version 2.0 (2012RAA....12.1197C 2012RAA....12.1197C)
LRS = LAMOST DR9 version 2.0 (2012RAA....12.1197C 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
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Acknowledgements:
Dmitry Chulkov, chulkovd(at)gmail.com
(End) Patricia Vannier [CDS] 09-Oct-2024