2019A&A...632A...3G

Query : 2019A&A...632A...3G

2019A&A...632A...3G - Astronomy and Astrophysics, volume 632A, 3-3 (2019/12-0)

A stellar census in globular clusters with MUSE: Binaries in NGC 3201.

GIESERS B., KAMANN S., DREIZLER S., HUSSER T.-O., ASKAR A., GOTTGENS F., BRINCHMANN J., LATOUR M., WEILBACHER P.M., WENDT M. and ROTH M.M.

Abstract (from CDS):

We utilise multi-epoch MUSE spectroscopy to study binary stars in the core of the Galactic globular cluster NGC 3201. Our sample consists of 3553 stars with 54 883 spectra in total comprising 3200 main-sequence stars up to 4 magnitudes below the turn-off. Each star in our sample has between 3 and 63 (with a median of 14) reliable radial velocity measurements within five years of observations. We introduce a statistical method to determine the probability of a star showing radial velocity variations based on the whole inhomogeneous radial velocity sample. Using HST photometry and an advanced dynamical MOCCA simulation of this specific cluster we overcome observational biases that previous spectroscopic studies had to deal with. This allows us to infer a binary frequency in the MUSE field of view and enables us to deduce the underlying true binary frequency of (6.75±0.72)% in NGC 3201. The comparison of the MUSE observations with the MOCCA simulation suggests a large portion of primordial binaries. We can also confirm a radial increase in the binary fraction towards the cluster centre due to mass segregation. We discovered that in the core of NGC 3201 at least (57.5±7.9)% of blue straggler stars are in a binary system. For the first time in a study of globular clusters, we were able to fit Keplerian orbits to a significant sample of 95 binaries. We present the binary system properties of eleven blue straggler stars and the connection to SX Phoenicis-type stars. We show evidence that two blue straggler formation scenarios, the mass transfer in binary (or triple) star systems and the coalescence due to binary-binary interactions, are present in our data. We also describe the binary and spectroscopic properties of four sub-subgiant (or red straggler) stars. Furthermore, we discovered two new black hole candidates with minimum masses (Msini) of (7.68±0.50)M☉, (4.4±2.8)M☉, and refine the minimum mass estimate on the already published black hole to (4.53±0.21)M☉. These black holes are consistent with an extensive black hole subsystem hosted by NGC 3201.

Abstract Copyright: © ESO 2019

Journal keyword(s): binaries: general - blue stragglers - stars: black holes - techniques: radial velocities - techniques: imaging spectroscopy - globular clusters: individual: NGC 3201

VizieR on-line data: <Available at CDS (J/A+A/632/A3): list.dat tablea1r.dat tablea1m.dat tablea1n.dat tablea2.dat>

Simbad objects: 116

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Number of rows : 116
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 3913 0
2 NGC 188 OpC 00 47 11.5 +85 14 38           ~ 922 0
3 [SBC2007] NGC 3201 15293 EB* 10 17 31.9474330296 -46 25 12.193833504           ~ 1 0
4 [SBC2007] NGC 3201 15222 EB* 10 17 32.1460282224 -46 24 41.735945520           ~ 1 0
5 [SBC2007] NGC 3201 25266 EB* 10 17 32.2335699960 -46 24 34.352806212           ~ 1 0
6 [SBC2007] NGC 3201 15138 EB* 10 17 32.2594128000 -46 24 58.343206212           ~ 1 0
7 [SBC2007] NGC 3201 25211 EB* 10 17 32.3694280920 -46 24 27.636084360           ~ 1 0
8 [SBC2007] NGC 3201 25210 EB* 10 17 32.4076883232 -46 24 28.868835096           ~ 1 0
9 [SBC2007] NGC 3201 25132 EB* 10 17 32.5524069384 -46 24 38.988844668           ~ 1 0
10 [SBC2007] NGC 3201 14972 EB* 10 17 32.6007849864 -46 24 58.509078012           ~ 1 0
11 NGC 3201 1615 RR* 10 17 32.6316780672 -46 25 32.550895020   15.20 14.53     ~ 7 0
12 [SBC2007] NGC 3201 14889 EB* 10 17 32.7771254376 -46 25 23.124010836           ~ 1 0
13 [SBC2007] NGC 3201 14837 EB* 10 17 32.9259049632 -46 25 27.553488024           ~ 1 0
14 [SBC2007] NGC 3201 14743 EB* 10 17 33.0933944640 -46 25 09.539463036           ~ 1 0
15 [SBC2007] NGC 3201 14749 EB* 10 17 33.1471090344 -46 25 07.460637312           ~ 1 0
16 [SBC2007] NGC 3201 14700 EB* 10 17 33.2570403864 -46 25 01.238915028           ~ 1 0
17 Cl* NGC 3201 CWFD 3-184 EB* 10 17 33.2831969496 -46 25 35.069851092   16.94 16.01     ~ 3 0
18 [SBC2007] NGC 3201 24738 EB* 10 17 33.3056170637 -46 24 39.537593600           ~ 1 0
19 [SBC2007] NGC 3201 14355 EB* 10 17 33.8622467736 -46 25 10.573023612           ~ 1 0
20 [SBC2007] NGC 3201 14055 EB* 10 17 34.4412205968 -46 24 42.821619552           ~ 1 0
21 [SBC2007] NGC 3201 24135 EB* 10 17 34.5187845840 -46 24 38.752250760           ~ 1 0
22 [SBC2007] NGC 3201 13968 EB* 10 17 34.5717612459 -46 24 49.506617499           ~ 1 0
23 [SBC2007] NGC 3201 13862 EB* 10 17 34.6671339625 -46 25 20.263301145           ~ 1 0
24 [SBC2007] NGC 3201 13874 EB* 10 17 34.7441009808 -46 25 12.090792108           ~ 1 0
25 NAME SPZ2019 NGC3201 80314 RG* 10 17 34.8137945784 -46 25 09.188868792 17.091 16.656 15.538 15.021 14.332 ~ 2 0
26 [SBC2007] NGC 3201 13816 EB* 10 17 34.8526704192 -46 24 57.566989332           ~ 1 0
27 NGC 3201 2702 RR* 10 17 34.8978818280 -46 24 33.128290152   15.19 14.59     ~ 8 0
28 [SBC2007] NGC 3201 13782 EB* 10 17 34.9261779672 -46 24 45.074958516           ~ 1 0
29 [SBC2007] NGC 3201 13756 EB* 10 17 34.9619455000 -46 25 07.331412558           ~ 1 0
30 [SBC2007] NGC 3201 23918 EB* 10 17 35.0210213476 -46 24 30.591669175           ~ 1 0
31 [SBC2007] NGC 3201 13684 EB* 10 17 35.0530 -46 25 14.609           ~ 1 0
32 [SBC2007] NGC 3201 13669 EB* 10 17 35.0936540149 -46 25 21.522262971           ~ 1 0
33 [SBC2007] NGC 3201 23889 EB* 10 17 35.1282123014 -46 24 02.096518209           ~ 1 0
34 [SBC2007] NGC 3201 13587 EB* 10 17 35.1299639760 -46 25 27.170724180           ~ 1 0
35 [SBC2007] NGC 3201 23847 EB* 10 17 35.1963 -46 24 34.248           ~ 1 0
36 [SBC2007] NGC 3201 23848 EB* 10 17 35.2124024358 -46 24 33.217023873           ~ 1 0
37 [SBC2007] NGC 3201 13522 EB* 10 17 35.3938438968 -46 24 40.440055428           ~ 1 0
38 [SBC2007] NGC 3201 13391 EB* 10 17 35.4986703432 -46 25 12.925702344           ~ 1 0
39 [SBC2007] NGC 3201 13438 EB* 10 17 35.5942892403 -46 24 50.489917230           ~ 1 0
40 [SBC2007] NGC 3201 13362 EB* 10 17 35.6118 -46 24 44.805           ~ 1 0
41 [SBC2007] NGC 3201 13355 EB* 10 17 35.6801 -46 24 49.450           ~ 1 0
42 [SBC2007] NGC 3201 13357 EB* 10 17 35.6960935968 -46 24 48.383439480           ~ 1 0
43 [SBC2007] NGC 3201 13221 EB* 10 17 35.9215172906 -46 24 54.880392160           ~ 1 0
44 NGC 3201 2713 RR* 10 17 35.9765147472 -46 24 15.587443332   15.49 14.75     ~ 9 1
45 [SBC2007] NGC 3201 13154 EB* 10 17 36.0037964880 -46 24 44.114655365           ~ 1 0
46 [SBC2007] NGC 3201 13108 EB* 10 17 36.0179659200 -46 25 12.454836816           ~ 1 0
47 [SBC2007] NGC 3201 23452 EB* 10 17 36.0462358560 -46 24 11.706807060           ~ 1 0
48 [SBC2007] NGC 3201 5132 EB* 10 17 36.0816146324 -46 25 32.160632788           ~ 2 0
49 SV* HV 10343 RR* 10 17 36.1213997544 -46 25 35.999586084   15.48 14.80     ~ 9 0
50 [SBC2007] NGC 3201 23381 EB* 10 17 36.1242511868 -46 24 26.036858973           ~ 1 0
51 Gaia DR2 5413575619690180992 RR* 10 17 36.1487922048 -46 24 28.052840196           ~ 3 0
52 Cl* NGC 3201 MKT V5 V* 10 17 36.16 -46 24 38.6   17.33 16.89     ~ 2 0
53 [SBC2007] NGC 3201 13069 EB* 10 17 36.1677082392 -46 24 53.849897280           ~ 1 0
54 [SBC2007] NGC 3201 13002 EB* 10 17 36.2452882680 -46 24 51.681299508           ~ 1 0
55 [SBC2007] NGC 3201 12975 EB* 10 17 36.3146400504 -46 25 13.700781696           ~ 1 0
56 [SBC2007] NGC 3201 23276 EB* 10 17 36.3939410952 -46 24 33.121143828           ~ 1 0
57 [SBC2007] NGC 3201 12932 EB* 10 17 36.4037934312 -46 24 49.308429492           ~ 1 0
58 [SBC2007] NGC 3201 12927 EB* 10 17 36.4462490688 -46 24 53.007261372           ~ 1 0
59 [SP2014] NGC3201 BSS2 BS* 10 17 36.4472425344 -46 25 11.344163052     16.07   15.50 ~ 2 0
60 [SBC2007] NGC 3201 12828 EB* 10 17 36.4642363320 -46 25 24.346620408           ~ 1 0
61 [SBC2007] NGC 3201 12836 EB* 10 17 36.5168 -46 25 16.834           ~ 1 0
62 [SBC2007] NGC 3201 12871 EB* 10 17 36.5628 -46 24 47.151           ~ 1 0
63 [SBC2007] NGC 3201 23220 EB* 10 17 36.5644842696 -46 24 36.187412472           ~ 1 0
64 Gaia DR3 5413575727073864448 * 10 17 36.6252577680 -46 23 55.091425272           ~ 1 0
65 [SBC2007] NGC 3201 23175 EB* 10 17 36.6366134832 -46 24 17.768037744           ~ 1 0
66 [SBC2007] NGC 3201 23215 EB* 10 17 36.6539016144 -46 23 53.861096400           ~ 1 0
67 [SP2014] NGC3201 BSS17 BS* 10 17 36.7918930944 -46 24 49.225728744     16.71   16.29 ~ 2 0
68 [SBC2007] NGC 3201 12706 EB* 10 17 36.8091411768 -46 25 22.583273232           ~ 1 0
69 NGC 3201 GlC 10 17 36.82 -46 24 44.9           ~ 884 0
70 [SBC2007] NGC 3201 12658 EB* 10 17 36.8651815512 -46 25 19.425446040           ~ 1 0
71 [SBC2007] NGC 3201 23019 EB* 10 17 36.8749924608 -46 24 29.877127416           ~ 1 0
72 [SBC2007] NGC 3201 23000 EB* 10 17 36.9642818544 -46 23 57.025591548           ~ 1 0
73 [SBC2007] NGC 3201 12581 EB* 10 17 37.0726 -46 24 40.945           ~ 1 0
74 [SBC2007] NGC 3201 12560 EB* 10 17 37.0957957680 -46 24 55.264001616     17.572   16.872 ~ 7 0
75 [SBC2007] NGC 3201 22818 EB* 10 17 37.3292580312 -46 23 59.733933864           ~ 1 0
76 [SBC2007] NGC 3201 12438 EB* 10 17 37.3461686568 -46 24 46.156108680           ~ 1 0
77 2MASS J10173744-4624008 RG* 10 17 37.4468116368 -46 24 00.831947472   15.611 14.672     ~ 5 0
78 [SBC2007] NGC 3201 12370 EB* 10 17 37.4680 -46 24 53.480           ~ 1 0
79 [SBC2007] NGC 3201 22697 EB* 10 17 37.4757 -46 24 39.634           ~ 1 0
80 [SBC2007] NGC 3201 12341 EB* 10 17 37.4909953896 -46 25 17.723475300           ~ 1 0
81 [SBC2007] NGC 3201 22700 EB* 10 17 37.5308325024 -46 24 36.902153232           ~ 1 0
82 [SBC2007] NGC 3201 22692 EB* 10 17 37.5894871968 -46 23 52.217608200           ~ 1 0
83 [SBC2007] NGC 3201 4513 EB* 10 17 37.5920022024 -46 25 33.454829568           ~ 1 0
84 [SBC2007] NGC 3201 12305 EB* 10 17 37.5981862080 -46 24 54.076030812           ~ 1 0
85 [SBC2007] NGC 3201 12308 EB* 10 17 37.6192876896 -46 24 52.100675496           ~ 1 0
86 [SBC2007] NGC 3201 12229 EB* 10 17 37.7666 -46 25 00.597           ~ 1 0
87 [SBC2007] NGC 3201 12173 EB* 10 17 37.8814598616 -46 24 59.791735152           ~ 1 0
88 [SBC2007] NGC 3201 12082 EB* 10 17 37.9962073056 -46 25 26.447999664           ~ 1 0
89 [SBC2007] NGC 3201 11945 EB* 10 17 38.2778186520 -46 24 42.954454944           ~ 1 0
90 NGC 3201 4711 RR* 10 17 38.2977808176 -46 25 07.188188088   15.49 14.85     ~ 10 0
91 Cl* NGC 3201 CWFD 3-247 EB* 10 17 38.4355724208 -46 25 21.261665748   15.09 14.23     ~ 3 0
92 [SBC2007] NGC 3201 11779 EB* 10 17 38.5501896144 -46 25 14.252892240           ~ 1 0
93 [SBC2007] NGC 3201 11802 EB* 10 17 38.6164 -46 24 56.663           ~ 1 0
94 [SBC2007] NGC 3201 21859 EB* 10 17 39.2322 -46 24 24.862           ~ 4 0
95 [SBC2007] NGC 3201 11405 EB* 10 17 39.2594356272 -46 25 11.856233460           ~ 1 0
96 NGC 3201 4710 RR* 10 17 39.3653441544 -46 25 06.167900928   14.88 14.51     ~ 8 0
97 [SBC2007] NGC 3201 11366 EB* 10 17 39.3797 -46 24 53.934           ~ 1 0
98 [SBC2007] NGC 3201 11317 EB* 10 17 39.4757230560 -46 24 48.822185592           ~ 1 0
99 [SBC2007] NGC 3201 11300 EB* 10 17 39.5042181168 -46 25 05.649234924           ~ 2 0
100 [SBC2007] NGC 3201 21659 EB* 10 17 39.6178456056 -46 24 37.097066448           ~ 1 0
101 [SP2014] NGC3201 BSS16 BS* 10 17 39.6388140132 -46 25 20.774490911     16.82   16.39 ~ 2 0
102 [SBC2007] NGC 3201 11131 EB* 10 17 39.9276546024 -46 24 58.404224448           ~ 1 0
103 Cl* NGC 3201 MKT V7 V* 10 17 40.2852233616 -46 25 08.126284764   16.92 16.05     ~ 3 0
104 [SP2014] NGC3201 BSS1 BS* 10 17 40.5223483008 -46 25 17.732396604     16.20   15.72 ~ 2 0
105 [SBC2007] NGC 3201 10799 EB* 10 17 40.6287909624 -46 24 54.007085736           ~ 1 0
106 Gaia DR3 5413575658348810240 * 10 17 40.6840362024 -46 24 33.496090488           ~ 1 0
107 [SBC2007] NGC 3201 10719 EB* 10 17 40.7540709672 -46 25 17.409495648           ~ 1 0
108 NGC 3201 4617 RR* 10 17 41.2866151968 -46 25 06.353188248   15.27 14.70     ~ 8 0
109 [SBC2007] NGC 3201 10418 EB* 10 17 41.3021664480 -46 25 24.951444852           ~ 1 0
110 [SBC2007] NGC 3201 10293 EB* 10 17 41.6761643136 -46 24 45.611330076           ~ 1 0
111 [SBC2007] NGC 3201 10274 EB* 10 17 41.7292644672 -46 25 03.961716024           ~ 1 0
112 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3424 0
113 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2478 0
114 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1848 0
115 NGC 6541 GlC 18 08 02.36 -43 42 53.6           ~ 377 0
116 V* SX Phe SX* 23 46 32.8928138474 -41 34 54.769886474   7.54 7.31     A3V 341 0

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