2019MNRAS.488.1535P

Query : 2019MNRAS.488.1535P

2019MNRAS.488.1535P - Mon. Not. R. Astron. Soc., 488, 1535-1557 (2019/September-2)

Statistical detection of a tidal stream associated with the globular cluster M68 using Gaia data.

PALAU C.G. and MIRALDA-ESCUDE J.

Abstract (from CDS):

A method to search for tidal streams and to fit their orbits based on maximum likelihood is presented and applied to the Gaia data. Tests of the method are performed showing how a simulated stream produced by tidal stripping of a star cluster is recovered when added to a simulation of the Gaia catalogue. The method can be applied to search for streams associated with known progenitors or to do blind searches in a general catalogue. As the first example, we apply the method to the globular cluster M68 and detect its clear tidal stream stretching over the whole North Galactic hemisphere, and passing within 5 kpc of the Sun. This is one of the closest tidal streams to us detected so far, and is highly promising to provide new constraints on the Milky Way gravitational potential, for which we present preliminary fits finding a slightly oblate dark halo consistent with other observations. We identify the M68 tidal stream with the previously discovered Fjorm stream by Ibata et al. The tidal stream is confirmed to contain stars that are consistent with the HR-diagram of M68. We provide a list of 115 stars that are most likely to be stream members, and should be prime targets for follow-up spectroscopic studies.

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

Journal keyword(s): globular clusters: individual: M68 - Galaxy: halo - Galaxy: kinematics and dynamics - Galaxy: structure

VizieR on-line data: <Available at CDS (J/MNRAS/488/1535): tablee1.dat>

Simbad objects: 127

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Number of rows : 127
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 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
2 Gaia DR3 6153341199065073536 * 12 37 12.2245030601 -38 57 09.504899709           ~ 2 0
3 Gaia DR2 3496417912286695936 * 12 37 35.1466704478 -26 45 04.265053290           ~ 1 0
4 Gaia DR2 3496413819180463616 * 12 37 53.5274865645 -26 48 12.659801782           ~ 1 0
5 Gaia DR3 3496364826490984832 * 12 38 06.4264005791 -26 56 24.345453204           ~ 2 0
6 Gaia DR3 3496426983257641216 Pe* 12 38 10.9072348114 -26 33 45.866182948           ~ 3 0
7 Gaia DR2 3496363825761763840 * 12 38 17.3640085624 -26 58 38.093643615           ~ 1 0
8 Gaia DR3 3496465702385628928 * 12 38 31.4376536781 -26 22 56.551395355           ~ 1 0
9 Gaia DR2 3496359908751562496 * 12 38 42.9821311422 -27 01 33.204402200           ~ 1 0
10 M 68 GlC 12 39 27.98 -26 44 38.6     7.96     ~ 1069 0
11 Gaia DR2 3496351250097506816 * 12 40 12.0469288272 -27 00 42.214858224           ~ 1 0
12 Gaia DR2 3496354101955858432 * 12 40 27.3912344066 -26 55 35.448618087           ~ 1 0
13 Gaia DR3 3496397262084464128 * 12 40 34.4350376297 -26 36 53.086441783           ~ 1 0
14 Gaia DR2 3496403270742208768 * 12 40 39.8737585016 -26 34 51.394168560           ~ 1 0
15 Gaia DR2 3496385266239278976 * 12 40 46.1365062698 -26 38 06.912371106           ~ 1 0
16 Gaia DR2 3496383857489983232 * 12 40 57.0006498492 -26 41 49.661864098           ~ 1 0
17 Gaia DR2 6133483847268997632 * 12 41 58.9566652925 -44 01 09.692361405           ~ 1 0
18 Gaia DR2 6129336321904932224 * 12 44 16.2708118075 -45 51 16.196022216           ~ 1 0
19 Gaia DR3 6128205985298801408 * 12 45 49.0141384443 -47 32 47.754922649           ~ 2 0
20 Gaia DR2 3675964587688060416 * 12 51 55.5792850960 -06 41 36.611307430           ~ 1 0
21 Gaia DR3 3690547165593837312 * 12 52 11.2035040682 +01 28 43.345327328           ~ 1 0
22 Gaia DR3 3677590211334628992 * 12 53 47.8365133233 -05 40 45.934759126           ~ 2 0
23 Gaia DR3 3677284104720388224 * 12 54 13.0350969112 -06 31 28.376893975           ~ 2 0
24 Gaia DR3 3677713562794613504 * 12 54 19.2970112771 -05 15 26.070198868           ~ 2 0
25 Gaia DR3 3678969243729036032 * 12 54 22.9100059610 -04 11 44.856917043           ~ 2 0
26 Gaia DR2 3677279569234130048 * 12 54 29.1695405173 -06 37 03.871154311           ~ 1 0
27 Gaia DR2 3678958794072858112 * 12 55 34.5715729336 -04 14 35.842908770           ~ 1 0
28 Gaia DR3 3688452737676950400 * 12 55 59.9945326243 -02 15 55.115269134           ~ 2 0
29 Gaia DR2 3702709520838936064 * 12 56 07.8313695446 +02 23 25.828172606           ~ 1 0
30 Gaia DR2 3678889254257425664 * 12 57 15.2318985375 -04 31 32.365127162           ~ 1 0
31 Gaia DR3 3690382170130121984 * 12 57 31.0756018456 +01 23 34.481170029           ~ 2 0
32 Gaia DR2 3685425060611225472 * 12 58 06.6742912948 -02 33 31.659331180           ~ 1 0
33 Gaia DR3 3692120708467214208 * 12 59 29.8572290375 +02 03 32.571706789           ~ 2 0
34 Gaia DR2 3690318879491794816 * 12 59 56.5372391760 +01 04 37.283403373           ~ 1 0
35 Gaia DR2 3688651916785064320 * 13 00 15.7278643631 -01 06 45.169693316           ~ 1 0
36 Gaia DR3 3678259474613592960 * 13 00 50.1508460375 -04 10 04.463231050           ~ 1 0
37 Gaia DR2 3685090289385421440 * 13 01 29.8573141195 -03 19 51.045349447           ~ 1 0
38 Gaia DR2 3689019428546525440 * 13 01 59.6840173175 -00 56 37.593670910           ~ 1 0
39 MGC 40355 * 13 02 03.1172700531 +00 09 15.444764968   20.02       ~ 2 0
40 Gaia DR3 3691856546503440128 * 13 02 12.2713211023 +01 42 24.138635056           ~ 2 0
41 Gaia DR2 3691940624783331968 * 13 02 29.7157872263 +01 59 46.303263460           ~ 1 0
42 Gaia DR2 3678292459962501376 * 13 02 54.4555669782 -03 52 26.520285153           ~ 1 0
43 Gaia DR3 3729366935440429952 * 13 03 06.9177205142 +06 13 44.488410946           ~ 2 0
44 Gaia DR2 3692071982062671872 * 13 03 19.8828971004 +02 39 50.126552965           ~ 1 0
45 Gaia DR3 3686001101624868352 * 13 03 59.7473248284 -01 08 07.329568002           ~ 1 0
46 Gaia DR2 3691972098303496192 * 13 04 06.2361122189 +01 55 15.109818862           ~ 1 0
47 Gaia DR2 3731064894927486976 * 13 04 35.1042101042 +08 38 02.198460417           ~ 1 0
48 Gaia DR3 3730306639925232384 * 13 05 29.9388202010 +07 12 36.327339809           ~ 2 0
49 Gaia DR2 3731172780210011264 * 13 06 48.2168006080 +08 57 40.018215170           ~ 1 0
50 Gaia DR2 3730783072057224064 * 13 07 16.5091135852 +08 01 24.870844678           ~ 1 0
51 Gaia DR3 3729915076346434304 * 13 08 33.9368847601 +07 06 44.287094727           ~ 2 0
52 Gaia DR2 3732743570009103488 * 13 09 04.3834523960 +09 47 31.653882314           ~ 1 0
53 Gaia DR3 3736013929907004928 * 13 10 06.6877146860 +11 16 24.689575481           ~ 2 0
54 SDSS J131014.13+084252.6 * 13 10 14.1391673472 +08 42 52.719692220           sdA 4 0
55 Gaia DR2 3736593170672106496 * 13 11 24.7850998795 +11 45 31.718510338           ~ 1 0
56 M 53 GlC 13 12 55.25 +18 10 05.4     7.79     ~ 907 0
57 Gaia DR3 3736784721917729152 * 13 14 33.7799810958 +12 45 46.079980299           ~ 2 0
58 Gaia DR3 3736463664522214656 * 13 14 56.5927059201 +11 46 45.796246207           ~ 2 0
59 NGC 5053 GlC 13 16 27.09 +17 42 00.9     9.96     ~ 675 0
60 Gaia DR2 3744580156279785600 * 13 16 52.4074913498 +16 03 52.059499979           ~ 1 0
61 Gaia DR2 3743823932797933312 * 13 17 02.5868618346 +14 34 26.845582113           ~ 1 0
62 Gaia DR3 3940420357056044288 * 13 17 50.3624210905 +20 50 37.863399817           ~ 2 0
63 Gaia DR3 3943652440204771328 * 13 18 11.1542398148 +21 59 37.063131042           ~ 2 0
64 Gaia DR3 3744739963422459648 * 13 18 21.0160477587 +16 48 02.406974738           ~ 2 0
65 Gaia DR2 3938479650312918656 * 13 18 22.8021605300 +17 33 21.352957771           ~ 1 0
66 Gaia DR3 3940514399659927296 * 13 18 35.3585893320 +20 56 01.893638408           ~ 2 0
67 Gaia DR3 3938507382917888512 * 13 19 04.4092956641 +17 46 01.867846230           ~ 2 0
68 Gaia DR2 3938871179532201728 * 13 20 49.3855371435 +18 54 35.205470185           ~ 1 0
69 Gaia DR3 3744325138301094784 * 13 21 53.7017995255 +15 18 10.731225110           ~ 2 0
70 Gaia DR3 3939039542249768704 * 13 22 57.3159468863 +18 47 48.529706641           ~ 2 0
71 Gaia DR3 3939089398230332928 * 13 23 26.0537572182 +19 10 19.669350356           ~ 2 0
72 Gaia DR3 1442304443823114752 * 13 24 15.9527635494 +21 05 16.758373284           ~ 2 0
73 Gaia DR2 1446439500896662016 * 13 26 16.2143748900 +24 30 52.225246726           ~ 1 0
74 Gaia DR3 1443127570010678400 * 13 26 59.1307695998 +22 50 43.058910513           ~ 2 0
75 Gaia DR3 1443176738796683392 * 13 27 55.2827664065 +23 15 58.163866299           ~ 2 0
76 Gaia DR3 1448864718605766912 * 13 32 55.9457694430 +27 32 09.934554786           ~ 2 0
77 Gaia DR2 1448109899577010688 * 13 34 10.9842760725 +25 59 03.219995960           ~ 1 0
78 Gaia DR3 1448703983749450240 * 13 36 09.2094130904 +27 16 18.372329143           ~ 2 0
79 Gaia DR3 1456251169001507584 * 13 36 56.3503878651 +30 31 25.000925080           ~ 2 0
80 Gaia DR3 1455844345403174016 * 13 36 56.3798927613 +29 19 30.266601280           ~ 2 0
81 Gaia DR3 1455852248142764288 * 13 37 04.5879306160 +29 27 54.286140296           ~ 2 0
82 Gaia DR3 1456784049887562496 * 13 41 47.1159478828 +31 39 24.587345576           ~ 2 0
83 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2593 0
84 Gaia DR3 1456411624683879296 * 13 42 16.0253280907 +30 46 16.357846644           ~ 2 0
85 Gaia DR3 1456842495802767744 * 13 42 51.6344996322 +32 19 39.968971855           ~ 2 0
86 Gaia DR3 1458436890741975936 * 13 45 01.8078111927 +33 03 41.912811491           ~ 2 0
87 Gaia DR3 1458389959637031296 * 13 45 04.3091921439 +33 02 43.814622728           ~ 1 0
88 Gaia DR3 1454872239685951232 * 13 45 37.4222086797 +28 52 12.941766408           ~ 2 0
89 Gaia DR3 1496589879802806528 * 13 48 45.8651867943 +39 02 59.094972117           ~ 2 0
90 Gaia DR3 1458262618149162112 * 13 49 25.0299459584 +32 44 28.426849491           ~ 2 0
91 Gaia DR2 1496065511539578112 * 13 54 45.3335047626 +38 27 03.957578227           ~ 1 0
92 Gaia DR3 1498889611451314816 * 13 56 52.3720539552 +41 27 44.553176928           ~ 3 0
93 Gaia DR3 1496266863903110912 * 13 57 34.0486709624 +39 32 33.738879585           ~ 2 0
94 Gaia DR3 1495975420305337728 * 13 59 17.0896239949 +38 33 04.844838555           ~ 2 0
95 Gaia DR3 1496030911283208576 * 14 00 59.3049216746 +39 06 14.843960338           ~ 2 0
96 NGC 5466 GlC 14 05 27.29 +28 32 04.0     9.70     ~ 887 0
97 Gaia DR2 1505368857379439232 * 14 08 02.6386011641 +43 57 45.002216492           ~ 1 0
98 Gaia DR3 1504696231140527232 * 14 11 19.3803791573 +43 53 50.308134882           ~ 2 0
99 Gaia DR3 1505103084803276160 * 14 15 51.8439694165 +44 59 42.277556516           ~ 2 0
100 Gaia DR3 1504902668745341568 * 14 17 39.3988304417 +44 45 44.257886495           ~ 2 0
101 Gaia DR3 1506844779940816384 * 14 19 33.3510489928 +46 47 29.031373478           ~ 2 0
102 Gaia DR3 1507371072349542144 * 14 23 40.5101813232 +47 51 39.494361856           ~ 2 0
103 CSO 644 * 14 23 55.9191764904 +47 03 04.861064448   17       ~ 3 0
104 Gaia DR2 1603533873982622592 * 14 36 04.3280161630 +49 55 52.743732399           ~ 1 0
105 Gaia DR3 1603928701735870336 * 14 38 43.4254773615 +50 29 14.202699450           ~ 2 0
106 Gaia DR3 1604273437287099776 * 14 39 12.2794469948 +51 29 52.798424722           ~ 2 0
107 Gaia DR2 1605837320778662528 * 14 41 05.8157573590 +52 23 46.806108051           ~ 1 0
108 Gaia DR3 1605598138344043904 * 14 47 47.6994462756 +52 10 58.908106747           ~ 2 0
109 Gaia DR3 1605773136787896320 * 14 47 57.7527664600 +52 56 24.712369530           ~ 2 0
110 Gaia DR3 1606236095606481280 * 14 52 24.9838183851 +54 15 23.679609978           ~ 2 0
111 Gaia DR2 1606240768531075840 * 14 56 29.5501954532 +53 47 52.490820245           ~ 1 0
112 Gaia DR3 1606249122242914688 * 14 57 20.9926940702 +53 55 49.626613652           ~ 2 0
113 Gaia DR3 1600425932567734784 * 15 06 31.6680937201 +55 19 31.540404716           ~ 2 0
114 Cl Pal 5 GlC 15 16 05.30 -00 06 41.0   15.1       ~ 797 1
115 NAME Fjorm Stream St* 15 20 +05.           ~ 20 0
116 Gaia DR2 1602451748381843840 * 15 20 27.1565151686 +57 01 27.333726866           ~ 1 0
117 Gaia DR3 1629009390895385728 * 16 25 40.5122349543 +63 44 58.693770602           ~ 1 0
118 Gaia DR2 1628882805322936192 * 16 34 09.6394925129 +63 46 09.205308686           ~ 1 0
119 Gaia DR3 1634945752956687104 * 16 45 43.5727135874 +64 49 45.102713470           ~ 2 0
120 Gaia DR3 1635011792373656448 * 16 55 31.7446193108 +65 07 15.937028606           ~ 2 0
121 Gaia DR3 1635385046508786432 * 16 59 48.7364319612 +65 20 45.673967928           ~ 1 0
122 Gaia DR2 1633029475988441856 * 17 38 02.4859632634 +65 50 28.680981411           ~ 1 0
123 Gaia DR3 2257502327664371328 * 18 15 44.8571685013 +65 29 16.448578395           ~ 1 0
124 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
125 NAME Orphan Stream St* 19 09 -23.           ~ 281 0
126 NAME GD-1 Stream St* 22 40 +31.           ~ 319 0
127 NAME Monoceros Stream St* ~ ~           ~ 374 1

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