2019MNRAS.486..112K

Query : 2019MNRAS.486..112K

2019MNRAS.486..112K - Mon. Not. R. Astron. Soc., 486, 112-122 (2019/June-2)

On the structure of the Pleiades cluster.

KRELOWSKI J., STROBEL A., GALAZUTDINOV G.A., BONDAR A. and VALYAVIN G.

Abstract (from CDS):

The data available on the distances (both from Gaia DR2 and those determined from interstellar Ca II lines) to the brightest stars in the Pleiades ('Seven Sisters' and their 'parents') suggest that these stars highly likely do not form a compact cluster but are localized in front of the main (Pleiades) cluster - at a distance close to that given by Hipparcos. Spectrophotometric distances agree with those from Gaia and Ca II for the brighter stars, but exhibit a large scatter for the stars at the cluster core. According to our study, this effect can be explained by additional ('grey') interstellar extinction due to the presence of larger dust grains within the Pleiades cluster core. Also, we confirm the suggestion that the spatial association of the Pleiades stars and interstellar gas is a result of a chance encounter between the cluster and one or more (at least two) approaching clouds. Indeed, we found that the relatively strong CH+ lines observed in the spectra of the Pleiades stars can be divided into two sets: one with very strong lines of the radical and another with relatively faint ones. Both groups also differ in radial velocities.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: distances - ISM: lines and bands - open clusters and associations: individual: Pleiades

Simbad objects: 51

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Number of rows : 51
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 HD 23061 * 03 42 55.1141189191 +24 29 35.049617418 9.96 9.90 9.46 9.01 8.90 F5V 114 0
2 HD 23157 ** 03 43 41.5325750160 +23 38 56.977320660   8.25 7.95     A5V 99 0
3 HD 23158 SB* 03 43 42.8773509420 +23 35 41.208537362   10.04 9.58     F5V 88 0
4 V* V1271 Tau RS* 03 43 48.3323982308 +25 00 15.795725924   12.47 11.62 11.69   ~ 92 0
5 HD 23195 SB* 03 43 58.8034552580 +23 52 57.813467374   10.19 9.55     F5V 108 0
6 V* V1187 Tau dS* 03 44 00.2690335032 +24 33 25.193571588   8.28 8.07     A4IV 156 0
7 HD 23246 PM* 03 44 25.7165880744 +24 23 40.975909332   8.44 8.18     A8V 94 0
8 HD 23269 Er* 03 44 40.7575766283 +24 49 06.729381349   10.4 10.0     F8V 133 0
9 * 16 Tau V* 03 44 48.2149362048 +24 17 22.083331452 5.09 5.42 5.46 5.42 5.47 B7V 272 0
10 HD 23289 * 03 44 51.2354703456 +23 16 08.116761576   9.33 9.01   8.37 F3V 135 0
11 * 17 Tau Be* 03 44 52.5370897890 +24 06 48.016260072 3.19 3.59 3.70 3.71 3.80 B6IIIe 415 1
12 HD 23326 PM* 03 45 05.2834818672 +23 42 09.619748244 9.632 9.34 8.99   8.49 F3V 128 0
13 HD 23325 Pe* 03 45 06.5388153048 +24 15 48.650236236   8.96 8.70   8.16 kA6hA9mF1(IV) 112 0
14 * 18 Tau PM* 03 45 09.7401340368 +24 50 21.343198416 5.21 5.57 5.64 5.61 5.68 B8V 293 0
15 * q Tau SB* 03 45 12.4999931614 +24 28 02.185543730 3.73 4.19 4.30 4.30 4.40 B6IV 288 0
16 HD 23351 SB* 03 45 20.8608183282 +24 55 19.454554726   9.46 9.03   8.43 F3V 103 0
17 V* V811 Tau BY* 03 45 21.1862906887 +23 43 38.888404751 14.771 13.67 12.57   11.24 G5 102 0
18 HD 23352 * 03 45 24.1269375603 +24 53 09.534285718   10.3 9.8   9.05 F5V 104 0
19 HD 23361 PM* 03 45 26.1389258592 +24 02 06.584058672   8.24 8.02   7.78 A3V 94 0
20 HD 23410 PM* 03 45 48.8151076872 +23 08 49.727194548   6.925 6.909   6.78 A0Va 100 0
21 BD+23 515 * 03 45 49.6027346640 +24 25 35.760314352   11.22 10.88     G5 9 0
22 * 20 Tau PM* 03 45 49.6081548365 +24 22 03.877565838 3.40 3.80 3.87 3.85 3.90 B7III 451 1
23 * 21 Tau PM* 03 45 54.4764507648 +24 33 16.235698248 5.49 5.72 5.76 5.71 5.74 B8V 234 0
24 * 22 Tau ** 03 46 02.9003257344 +24 31 40.428415632   6.402 6.421   6.41 A0Vn 183 0
25 HD 23464 PM* 03 46 12.6884612472 +23 07 42.737683332   9.29 8.67   8.00 F8.5V 81 0
26 * 23 Tau Be* 03 46 19.5858871361 +23 56 54.092177220 3.70 4.12 4.18   4.16 B6IV(e) 446 2
27 HD 23489 ** 03 46 27.2785317984 +24 15 17.995532328 7.56 7.44 7.34 7.28 7.23 A2V 131 0
28 HD 23512 PM* 03 46 34.1921924832 +23 37 26.494987584 8.72 8.44 8.09 7.79 7.49 A2V 158 0
29 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
30 HD 23514 * 03 46 38.3922026460 +22 55 11.199934340 9.95 9.93 9.43 8.96 8.84 F5V 157 0
31 HD 282954 Em* 03 46 38.7739870144 +24 57 34.724064803   10.9 10.27   9.55 F9.5V 120 0
32 HD 23511 PM* 03 46 39.3335012425 +24 06 11.531508492   9.75 9.28   8.75 F5V 144 0
33 HD 23513 PM* 03 46 39.9969863424 +23 06 37.194884441 9.85 9.91 9.40 8.97 8.83 F5V 115 0
34 V* V1065 Tau RS* 03 46 40.2476949658 +23 29 51.877806260 14.016 13.01 12.02   10.93 K0 99 0
35 HD 23568 ** 03 46 59.3943532032 +24 31 12.448365564   6.83 6.82   6.76 B9.5V 165 0
36 V* V534 Tau dS* 03 47 03.5551874064 +24 49 11.812255356   8.65 8.30   7.83 A9V 120 0
37 * 24 Tau * 03 47 21.0386292336 +24 06 58.564163952 6.26 6.30 6.28   6.30 A0V 105 0
38 V* V1228 Tau dS* 03 47 24.0779661960 +24 35 18.510029196   7.89 7.71 7.5 7.45 A4V 100 0
39 * eta Tau Be* 03 47 29.0765529 +24 06 18.488347 2.44 2.78 2.87 2.84 2.88 B7III 557 1
40 V* V1229 Tau SB* 03 47 29.4536404848 +24 17 18.019635504   6.87 6.81   6.74 A0VpSi+Am 225 0
41 HD 23733 SB* 03 48 13.5574497288 +24 19 06.222596880   8.73 8.41   7.83 A9V 104 0
42 HD 23753 PM* 03 48 20.8167826752 +23 25 16.495877028 5.06 5.38 5.45 5.42 5.48 B8V 194 0
43 V* V1282 Tau RS* 03 49 06.1083396732 +23 46 52.469922436   11.63 10.803 9.8 9.831 G7IV 110 0
44 * 27 Tau SB* 03 49 09.7430578114 +24 03 12.301679809 3.18 3.54 3.63 3.62 3.68 B8III 387 0
45 * 28 Tau Be* 03 49 11.2165977912 +24 08 12.156712008 4.73 5.01 5.09   5.08 B8Vne 494 0
46 HD 23873 * 03 49 21.7502453688 +24 22 51.434157000   6.563 6.586   6.57 B9.5V 155 0
47 HD 23923 * 03 49 43.5315887616 +23 42 42.667696476   6.104 6.153   6.18 B8.5V 173 0
48 HD 23950 * 03 49 55.0695142800 +22 14 38.936066064   6.046 6.070     B8III 121 0
49 HD 23964A SB* 03 49 58.0556899152 +23 50 55.288075236   6.82 6.81 6.3 6.74 B9.5VspSiSrCr 167 0
50 HD 24076 * 03 50 52.4294239848 +23 57 41.294242296   7.02 6.92   6.81 A2V 94 0
51 * 33 Tau SB* 03 57 03.8071839408 +23 10 31.951102908   6.059 6.038     B9.5IV 76 0

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