2024AJ....168..156C

Query : 2024AJ....168..156C

2024AJ....168..156C - Astron. J., 168, 156 (2024/October-0)

Unveiling Subarcsecond Multiplicity in the Pleiades with Gaia Multicolor Photometry.

CHULKOV D.

Abstract (from CDS):

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″ (13.5-135 au projected distance) and mass ratio q > 0.5 are deemed binary, indicating a binarity fraction of 6 ± 1%.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Open star clusters - Two-color diagrams - Visual binary stars - Gaia

VizieR on-line data: <Available at CDS (J/AJ/168/156): table2.dat>

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 44

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Number of rows : 44
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 Cl* Melotte 22 MT 19 * 03 40 24.6614639136 +22 48 59.466767076   16.431 14.936   12.693 M: 13 0
2 2MASS J03402958+2333040 Y*O 03 40 29.5957301736 +23 33 03.995897220   15.722 14.344   12.690 K5 24 0
3 Cl* Melotte 22 DH 193 Y*O 03 41 53.6518164170 +23 27 28.793406124   15.390 13.999   12.234 M1.5 38 0
4 Cl* Melotte 22 PELS 31 ** 03 43 19.035552 +22 26 57.12720   12.81 11.62 11.285 10.396 K0 38 0
5 V* V700 Tau Y*O 03 43 26.6173423430 +24 59 39.591180544   13.58 12.50   11.40 ~ 77 0
6 V* MO Tau Y*O 03 43 42.1404545160 +24 34 23.587609260 19.78         M3Ve 51 0
7 Cl Melotte 22 186 * 03 43 47.5129583016 +23 12 41.646939444   11.4 10.5     ~ 24 0
8 HD 23247 PM* 03 44 23.5411594200 +24 07 57.471196908   9.564 9.111 9.23   F2V 95 0
9 V* NP Tau Y*O 03 44 28.0030714536 +24 10 17.615581608 15.965   13.46     M0.5Ve 87 0
10 HD 23387 ** 03 45 37.7883282408 +24 20 08.303093844   7.33 7.19   6.96 A1V 131 0
11 V* V1041 Tau Y*O 03 45 39.4002482170 +23 45 15.469362585 14.355 13.52 12.41 11.99 10.83 G9V 75 0
12 V* V969 Tau BY* 03 45 42.1185203606 +24 54 21.622880032   10.18 9.56   8.82 G3 145 1
13 * 21 Tau PM* 03 45 54.4764507648 +24 33 16.235698248 5.49 5.72 5.76 5.71 5.74 B8V 234 0
14 2MASS J03460275+2344146 Y*O 03 46 02.7603231732 +23 44 14.563747668   13.86 12.61   11.05 G4V 86 0
15 Cl Melotte 22 885 Y*O 03 46 07.775880 +24 52 00.72624   13.15 12.17 11.86 10.87 K3 66 0
16 V* PP Tau Y*O 03 46 31.1851066172 +24 07 02.431428754   15.60 14.21   12.39 M1.6 84 0
17 V* V642 Tau Er* 03 46 37.284936 +24 20 36.71124   13.362 12.321 11.964 10.97 K5V 87 0
18 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
19 V* V643 Tau Y*O 03 46 40.2531248352 +24 55 51.835076724     14.10   12.30 M0e 60 0
20 V* V534 Tau dS* 03 47 03.5551874064 +24 49 11.812255356   8.65 8.30   7.83 A9V 120 0
21 V* FL Tau Y*O 03 47 08.5260384216 +23 42 38.740347036   14.73 13.44 13.04   K7 72 0
22 V* V1228 Tau dS* 03 47 24.0779661960 +24 35 18.510029196   7.89 7.71 7.5 7.45 A4V 100 0
23 * eta Tau Be* 03 47 29.0765529 +24 06 18.488347 2.44 2.78 2.87 2.84 2.88 B7III 557 1
24 V* QV Tau Er* 03 47 33.4806047064 +23 41 32.253419112   17.21 15.74 15.45 13.16 M: 51 0
25 V* V652 Tau Y*O 03 47 40.9847419392 +22 55 47.900799228   13.28 12.22   11.14 K3V 65 0
26 V* V336 Tau Er* 03 47 47.9506071312 +22 33 19.362874716   16.68 15.27 14.90 12.81 M2.5e 28 0
27 HD 23713 ** 03 48 07.1684166120 +24 08 31.430682996   9.86 9.43 9.32 8.64 F7V 111 0
28 V* V346 Tau PM* 03 48 22.7478365352 +23 58 21.198465408   16.34 14.84   12.66 M2.3 53 0
29 HD 23778 ** 03 48 34.7984058048 +24 10 52.199121955   9.54 9.05 9.16 8.45 F4V 77 0
30 V* V353 Tau Y*O 03 48 37.6384264781 +22 46 09.522099674   15.92 14.57 14.14 12.69 M1.3 52 0
31 Cl Melotte 22 2027 Y*O 03 48 48.9539567589 +24 16 02.586202857   11.77 10.91   10.01 G2V 85 0
32 Cl Melotte 22 2106 Y*O 03 48 58.4864992200 +23 12 04.243870368   12.39 11.53   10.59 K0V 61 0
33 V* V355 Tau Y*O 03 49 05.8515088920 +23 44 23.259138000   16.76 15.31   12.94 M2.6 54 0
34 V* V1282 Tau RS* 03 49 06.1083396732 +23 46 52.469922436   11.63 10.803 9.8 9.831 G7IV 110 0
35 * 27 Tau SB* 03 49 09.7430578114 +24 03 12.301679809 3.18 3.54 3.63 3.62 3.68 B8III 387 0
36 V* V357 Tau BY* 03 49 11.2836053136 +23 33 18.809901180   15.60 14.23   12.50 M1.7 64 0
37 V* V467 Tau Er* 03 49 16.4313090936 +24 03 48.472538004   17.038 15.522   13.033 ~ 30 0
38 HD 282960 ** 03 49 25.704576 +24 56 15.44820   11.743 10.887 10.639 10.00 G2 56 0
39 V* V667 Tau Y*O 03 49 34.9090513560 +23 27 16.824866868   15.593 14.308 13.768 12.479 M1.8 46 0
40 HD 23964C SB* 03 49 57.4472485560 +23 50 49.472030616   10.95 10.54 9.71   kA1hF5mF5 36 0
41 V* V372 Tau Y*O 03 50 12.2661343080 +23 59 44.489238432   16.77 15.33 15.08 13.04 M3Ve 55 0
42 V* V1176 Tau Er* 03 50 54.3588780269 +23 50 05.237700840   12.43 11.48 10.99 10.47 K2 77 0
43 V* V679 Tau TT* 03 52 02.2372961328 +24 39 47.681148816   13.57 11.41 11.89 10.77 K5e 140 0
44 * 41 Tau a2* 04 06 36.4125948768 +27 35 59.640149616   5.041 5.172     Ap 249 0

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