2020ApJ...903...99H

Query : 2020ApJ...903...99H

2020ApJ...903...99H - Astrophys. J., 903, 99-99 (2020/November-2)

Stellar spins in the open cluster NGC 2516.

HEALY B.F. and McCULLOUGH P.R.

Abstract (from CDS):

Measuring the distribution of stellar spin axis orientations in a coeval group of stars probes the physical processes underlying the stars' formation. In this paper, we use spectrophotometric observations of the open cluster NGC 2516 to determine the degree of spin alignment among its stars. We combine TESS light curves, ground-based spectroscopy from the Gaia-ESO and GALAH surveys, broadband stellar magnitudes from several surveys, and Gaia astrometry to measure 33 stellar inclinations and quantify overall cluster rotation. Our measurements suggest that stellar spins in this cluster are isotropically oriented, while allowing for the possibility that they are moderately aligned. An isotropic distribution of NGC 2516 spins would imply a star-forming environment in which turbulence dominated ordered motion, while a moderately aligned distribution would suggest a more substantial contribution from rotation. We also perform a three-dimensional analysis of the cluster's internal kinematics, finding no significant signatures of overall rotation. Stemming from this analysis, we identify evidence of cluster contraction, suggesting possible ongoing mass segregation in NGC 2516.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Open star clusters - Inclination - Stellar rotation - Star formation

VizieR on-line data: <Available at CDS (J/ApJ/903/99): table1.dat table2.dat>

Simbad objects: 165

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Number of rows : 165
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 20 MGr 03 26 50.6 +48 51 48           ~ 928 0
2 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
3 UCAC4 145-011679 * 07 51 27.2718206592 -61 09 56.826769968   13.452 12.782 12.697   ~ 18 0
4 UCAC4 145-011682 * 07 51 28.9770531552 -61 06 05.189480604   13.413 12.792 12.719   ~ 19 0
5 UCAC4 150-012135 * 07 52 00.0714775896 -60 07 53.803097148   14.076 13.309 13.233   ~ 13 0
6 UCAC4 146-011898 * 07 52 02.2876705392 -60 59 49.591796244   15.022 14.115 13.874   ~ 16 0
7 UCAC4 148-012376 * 07 52 53.2595977320 -60 35 43.323232020   13.876 13.186 13.042   ~ 17 0
8 UCAC4 146-011964 * 07 52 59.8152471864 -60 51 22.546078956   13.908 13.168 13.016   ~ 18 0
9 2MASS J07525994-6053288 * 07 52 59.9318698728 -60 53 28.856480460     17.65   15.50 M1.0 30 0
10 UCAC4 149-011890 * 07 53 04.4482236048 -60 14 40.678930788   14.223 13.442 13.300   ~ 15 0
11 UCAC4 146-012003 * 07 53 25.5333668736 -60 53 20.726855124   13.139 12.479 12.386   ~ 16 0
12 UCAC4 146-012037 * 07 53 53.5845472512 -60 53 37.739037192   13.807 13.091 12.868   ~ 16 0
13 Gaia DR3 5290941628939128320 * 07 53 58.2044955600 -60 25 10.424144928           ~ 15 0
14 UCAC4 146-012045 * 07 53 59.7177002784 -60 49 19.827100704   16.714 15.621 14.968   ~ 18 0
15 2MASS J07540601-6101251 * 07 54 05.9961084960 -61 01 25.181819184         14.97 K9.6 28 0
16 UCAC4 147-011932 * 07 54 06.3458351856 -60 43 51.482495676   17.299 16.015 15.693   ~ 20 0
17 UCAC4 146-012054 * 07 54 07.9943758200 -60 56 52.131818112   14.342 13.558 13.343   ~ 17 0
18 TYC 8911-1934-1 * 07 54 09.6687900480 -60 58 27.361205904   12.26 11.50     ~ 21 0
19 2MASS J07541166-6048000 * 07 54 11.6510949048 -60 48 00.076880016         12.82 K2.1 36 0
20 2MASS J07541552-6058078 * 07 54 15.5136602040 -60 58 07.942304172         13.22 K1.7 33 0
21 UCAC4 144-011709 * 07 54 17.4096940200 -61 20 39.923645712   13.811 13.108 12.888   ~ 18 0
22 UCAC4 149-012002 * 07 54 26.2074734352 -60 19 17.958543492   14.095 13.368 13.275   ~ 15 0
23 Gaia DR3 5290927816324296960 * 07 54 34.7270956776 -60 31 56.944860600           ~ 15 0
24 2MASS J07544341-6024436 * 07 54 43.4153912520 -60 24 43.618056516         12.94 ~ 34 0
25 2MASS J07545020-6050407 * 07 54 50.1981273216 -60 50 40.758537516         12.21 ~ 27 0
26 2MASS J07545163-6025303 * 07 54 51.6274939344 -60 25 30.397726416         15.01 K7.9 28 0
27 TYC 8911-647-1 * 07 54 57.0576858360 -60 14 01.137204708   12.39 11.95     ~ 20 0
28 GES J07545954-6104227 LM* 07 54 59.5219468872 -61 04 22.872992556     18.23   15.74 M3.1 28 0
29 2MASS J07550359-6028452 * 07 55 03.5987497728 -60 28 45.262264692         14.67 K6.2 28 0
30 2MASS J07550592-6104293 * 07 55 05.9153462520 -61 04 29.505277596         12.52 ~ 37 0
31 TYC 8911-1895-1 * 07 55 18.0168059112 -60 57 35.157195972   11.2 11.0     ~ 18 0
32 2MASS J07551977-6104200 * 07 55 19.7468424048 -61 04 19.880100840         12.28 ~ 30 0
33 UCAC4 150-012400 * 07 55 20.8878838224 -60 03 06.681909240   14.494 13.661 13.587   ~ 16 0
34 UCAC4 143-012211 * 07 55 24.2177796072 -61 29 31.251039000   15.037 14.227 13.848   ~ 15 0
35 2MASS J07553273-6037073 * 07 55 32.7283531152 -60 37 07.327967988         15.19 M0.5 29 0
36 2MASS J07554906-6023478 * 07 55 49.0630304016 -60 23 47.895254808         14.91 K7.7 26 0
37 GES J07555144-6058015 LM* 07 55 51.4292405832 -60 58 01.453939140     16.67   14.89 K9.6 30 0
38 GES J07555194-6113208 LM* 07 55 51.9322737336 -61 13 20.851944744     16.83   15.10 K7.7 32 0
39 GES J07555219-6054036 LM* 07 55 52.1797822704 -60 54 03.607968564     17.99   15.68 M1.9 31 0
40 2MASS J07555287-6024531 * 07 55 52.8734595048 -60 24 53.208684828         14.19 K4.8 28 0
41 Cl* NGC 2516 AR 25 * 07 56 01.2459520728 -60 57 26.731859004         12.19 ~ 30 0
42 Cl* NGC 2516 DAC 323 * 07 56 07.6833987096 -60 41 10.444419348   13.19 12.56     ~ 25 0
43 Cl* NGC 2516 JTH 3748 * 07 56 11.2832180352 -60 50 58.051608756   16.964 15.753   14.307 K5.6 32 0
44 2MASS J07561448-6054314 * 07 56 14.4798247800 -60 54 31.435598340         15.18 M2.4 28 0
45 2MASS J07561521-6038218 * 07 56 15.2167177368 -60 38 21.837857172         15.34 M1.5 26 0
46 Gaia DR3 5291043917879994880 * 07 56 30.5713253856 -60 10 15.537029952           ~ 16 0
47 Cl* NGC 2516 DAC 325 * 07 56 34.0765599240 -60 39 05.909807988   13.691 13.020   12.258 ~ 43 0
48 UCAC4 143-012285 * 07 56 39.3343365888 -61 27 55.040819436   13.660 13.000 12.811   ~ 18 0
49 NGC 2516 106 V* 07 56 43.1174409432 -60 54 34.866373140   11.61 11.22   11.071 ~ 34 0
50 Cl* NGC 2516 DAC 245 * 07 56 44.1122858664 -60 34 52.242353652   14.309 13.541   12.688 ~ 46 0
51 Cl* NGC 2516 SBL 176 * 07 56 47.6041176504 -61 04 37.249963500         14.07 K3.5 30 0
52 Cl* NGC 2516 JTH 5312 * 07 56 55.5430691184 -60 39 29.934010980   19.567 18.035   15.792 M1.4 29 0
53 2MASS J07565745-6017559 SB* 07 56 57.4576699080 -60 17 55.953896928         11.80 ~ 30 0
54 Cl* NGC 2516 JTH 5447 * 07 56 59.5633374888 -60 49 56.692237836   17.903 16.555   14.64 K9.7 36 0
55 TYC 8911-841-1 * 07 57 00.9791992680 -60 11 45.835338156   11.76 11.47     ~ 23 0
56 Cl* NGC 2516 DAC 532 * 07 57 02.4045124992 -61 02 04.939515888   12.444 11.928   11.287 ~ 36 0
57 NGC 2516 108 gD* 07 57 02.9664455376 -60 36 36.833849568   11.55 11.22   10.791 ~ 35 0
58 Gaia DR3 5291050927266764288 * 07 57 03.2458574832 -59 57 32.636153268           ~ 15 0
59 Cl* NGC 2516 DAC 311 * 07 57 09.3803625720 -60 48 02.756998044   13.07 12.47 12.33 11.719 ~ 40 0
60 Cl* NGC 2516 JTH 5835 * 07 57 09.9697033848 -60 44 10.204994904   14.021 13.289   12.446 ~ 40 0
61 Cl* NGC 2516 DAC 415 * 07 57 10.8338888544 -60 50 50.160537312   13.625 12.954   12.154 ~ 42 0
62 Cl* NGC 2516 JTH 5957 * 07 57 12.1614490152 -60 33 08.978149188   15.591 14.576   13.496 K2.2 35 1
63 Cl* NGC 2516 AR 88 * 07 57 20.1026902752 -61 07 13.971483876         12.22 ~ 29 0
64 NGC 2516 92 gD* 07 57 25.0374905280 -60 39 17.353136088   11.756 11.370   10.896 ~ 40 0
65 Cl* NGC 2516 DAC 308 * 07 57 25.2121054104 -60 46 47.308660716 13.89 13.79 13.09   12.253 ~ 42 0
66 UCAC4 144-011913 * 07 57 25.5818403816 -61 19 16.573187604   14.854 14.016 13.641   ~ 16 0
67 CPD-60 956 * 07 57 31.7513283496 -60 59 29.594332227   11.201 10.838 10.860   ~ 28 0
68 Cl* NGC 2516 EGG 112 * 07 57 36.0776364840 -60 48 12.714183180 14.93 14.61 13.78   12.823 ~ 50 0
69 Cl* NGC 2516 SBL 443 * 07 57 39.3757173360 -60 28 34.745446920         14.48 K5.4 30 0
70 Cl* NGC 2516 DAC 528 * 07 57 40.8824596848 -61 03 30.533096916   13.725 13.037   12.223 ~ 26 0
71 Cl* NGC 2516 DAC 215 * 07 57 42.7137584088 -60 44 20.705120700   13.318 12.682   11.932 ~ 39 0
72 UCAC4 144-011940 * 07 57 48.0174075655 -61 16 34.227682272   14.701 13.834 13.650   ~ 16 0
73 2MASS J07575158-6106547 * 07 57 51.5781549696 -61 06 54.714088224         15.71 M1.7 29 0
74 UCAC4 144-011947 * 07 57 54.1016039640 -61 17 49.091204544   12.738 12.176 12.081   ~ 20 0
75 Cl* NGC 2516 EGG 27 * 07 57 57.6789191197 -60 53 38.925055596   15.494 14.532 14.227 13.377 K2.6 38 0
76 UCAC4 143-012359 * 07 57 59.8576085208 -61 27 07.088093064   13.547 12.891 12.715   ~ 18 0
77 UCAC4 150-012649 * 07 58 00.3744651528 -60 10 08.083618860   14.151 13.426 13.451   ~ 15 0
78 NGC 2516 OpC 07 58 00.5 -60 46 36           ~ 793 0
79 2MASS J07581099-6025028 * 07 58 10.9986028632 -60 25 02.791341192         11.57 ~ 30 0
80 GES J07581825-6121091 LM* 07 58 18.2561980656 -61 21 09.037375776     17.51   15.41 K9.8 32 0
81 Cl* NGC 2516 AR 173 * 07 58 20.8427002560 -61 11 46.004697204         12.31 ~ 27 0
82 Cl* NGC 2516 JTH 8675 * 07 58 23.7756882192 -61 03 44.450888400   13.825 13.137   12.309 ~ 33 0
83 Cl* NGC 2516 JTH 8692 * 07 58 24.5179038168 -60 54 39.983884632   19.408 18.029     ~ 22 0
84 2MASS J07583040-6110071 * 07 58 30.3987805032 -61 10 07.040997516         14.09 K3.8 25 0
85 UCAC4 150-012691 * 07 58 30.4826798328 -60 09 28.161312480   14.012 13.286 13.228   ~ 17 0
86 Cl* NGC 2516 HTR M133 * 07 58 31.2055481688 -61 05 23.060324580   19.242 17.781   15.612 M1.3 33 0
87 Cl* NGC 2516 DAC 622 * 07 58 34.8607924584 -61 03 12.048948288   13.765 13.084   12.283 ~ 41 0
88 Cl* NGC 2516 DAC 803 * 07 58 35.7255758376 -60 46 52.490530344 14.30 14.008 13.255 13.118 12.567 ~ 46 0
89 TYC 8911-150-1 * 07 58 36.7634546184 -60 02 10.071234312   12.33 11.29     ~ 18 0
90 Cl* NGC 2516 DAC 621 * 07 58 36.9267853608 -61 04 34.270356792   14.148 13.421   12.576 ~ 33 0
91 Gaia DR3 5289872972356315520 * 07 58 42.6351450048 -61 38 17.191576788           ~ 15 0
92 NGC 2516 56 * 07 58 47.5969231776 -60 51 37.701594720   11.75 11.30   10.888 ~ 30 0
93 Cl* NGC 2516 HTR M145 * 07 58 50.6393662872 -61 06 50.756513724         12.43 ~ 29 0
94 2MASS J07585362-6028087 * 07 58 53.6365188096 -60 28 08.843013444         14.02 K3.3 29 0
95 [IHA2007] N2516-1-5-230 LM* 07 58 56.2886146872 -61 31 12.535520628     17.70   15.54 K-M 18 0
96 [IHA2007] N2516-1-5-283 LM* 07 58 57.9678243600 -61 32 39.385316436     17.82   15.54 K-M 19 0
97 UCAC4 144-012015 * 07 59 03.1253341392 -61 15 09.051305472   12.704 12.146 12.025   ~ 15 0
98 NGC 2516 68 * 07 59 05.0237299728 -60 56 36.091484664   11.978 11.534   10.992 ~ 41 0
99 Cl* NGC 2516 HTR M131 LM* 07 59 07.1546738832 -61 05 03.974435952   19.248 17.736   15.584 K-M 23 0
100 Cl* NGC 2516 JTH 10471 LM* 07 59 09.5943692544 -60 50 51.599105988   18.958 17.516   15.434 M0.5 37 1
101 Gaia DR3 5290847311458830336 * 07 59 09.6995239608 -60 12 47.726958960           ~ 15 0
102 UCAC4 149-012412 * 07 59 10.2429323616 -60 19 57.316915884   14.032 13.290 13.208   ~ 16 0
103 Cl* NGC 2516 SBL 987 * 07 59 13.4046531048 -60 40 23.980724832   14.395 13.606   12.720 ~ 33 0
104 Cl* NGC 2516 EGG 63 * 07 59 21.5530742904 -60 46 45.326520084 15.76 15.32 14.36   13.448 K2.0 38 0
105 Gaia DR3 5290843257009705344 * 07 59 39.7529058264 -60 16 24.558305988           ~ 16 0
106 UCAC4 149-012459 * 07 59 46.6872190368 -60 15 21.374764020   14.096 13.373 13.290   ~ 16 0
107 Cl* NGC 2516 DAC 722 * 07 59 47.4781234512 -60 54 15.255876816   14.557 13.756   12.860 ~ 37 0
108 Cl* NGC 2516 HTR M132 * 07 59 48.2496267288 -61 05 19.957229988         12.67 ~ 29 0
109 2MASS J07595170-6022094 * 07 59 51.7126644072 -60 22 09.548705676         11.63 ~ 29 0
110 Cl* NGC 2516 DAC 818 * 07 59 52.6253269680 -60 41 15.999848700   13.171 12.560   11.832 ~ 35 0
111 UCAC4 144-012071 * 07 59 56.2104517488 -61 19 13.057760064   13.497 12.841 12.660   ~ 19 0
112 Gaia DR3 5290765397843334912 * 07 59 56.6259718560 -60 49 28.365939948           ~ 17 0
113 Cl* NGC 2516 SBL 1167 * 08 00 16.4730997488 -60 46 15.151896948   17.460 16.190   14.606 K5.9 33 0
114 Gaia DR3 5290843600607099776 * 08 00 17.8295257032 -60 17 02.774469372           ~ 16 0
115 Cl* NGC 2516 SBL 1173 * 08 00 18.6677617920 -60 50 28.172601528   17.447 16.177   14.630 K6.5 31 0
116 Cl* NGC 2516 DAC 868 * 08 00 24.0473391528 -60 42 03.695626620   13.48 12.82     ~ 23 0
117 UCAC4 144-012103 * 08 00 27.6632517624 -61 15 41.518322028   14.952 14.067 13.834   ~ 15 0
118 2MASS J08002876-6107450 * 08 00 28.7614878096 -61 07 45.020092908     16.88   15.09 K7.6 27 0
119 Cl* NGC 2516 AR 296 * 08 00 28.8476001120 -61 00 48.230990676         12.15 ~ 29 0
120 2MASS J08003109-6027486 SB* 08 00 31.1100148316 -60 27 48.677630068         11.71 ~ 29 0
121 2MASS J08003318-6031234 * 08 00 33.1944225648 -60 31 23.491439976         11.74 ~ 28 0
122 2MASS J08004306-6106115 * 08 00 43.0635291144 -61 06 11.589211836         13.96 K3.5 28 0
123 Cl* NGC 2516 DAC 861 * 08 00 47.6861350560 -60 43 36.936872328   14.81 14.01   12.80 ~ 30 0
124 Cl* NGC 2516 SBL 1240 * 08 00 47.9907119808 -60 51 56.454594336         13.08 ~ 35 0
125 TYC 8924-100-1 * 08 00 50.7822113832 -60 09 10.723883580   11.40 11.02     ~ 19 0
126 Cl* NGC 2516 DAC 863 * 08 00 54.8988764304 -60 45 14.897474748   11.84 11.41     ~ 26 0
127 Cl* NGC 2516 JTH 14223 * 08 01 02.1552530928 -60 45 02.800451628   12.658 12.121   11.45 ~ 30 0
128 UCAC4 148-013110 * 08 01 08.7129223896 -60 28 35.068611936   16.016 14.948 14.552   ~ 18 0
129 Cl* NGC 2516 AR 319 * 08 01 12.8090847624 -60 53 53.104787592         12.13 ~ 30 0
130 2MASS J08011532-6047395 * 08 01 15.3328615584 -60 47 39.577673796         13.44 K3.2 23 0
131 TYC 8924-1240-1 * 08 01 15.5987133408 -60 36 11.852417664   11.46 11.36     ~ 16 0
132 TYC 8924-153-1 * 08 01 24.4800627624 -60 35 15.987457068   12.77 12.21 12.12 11.46 ~ 29 0
133 2MASS J08013392-6051381 * 08 01 33.9288792240 -60 51 38.214109836         14.35 K4.8 29 0
134 Cl* NGC 2516 AR 323 * 08 01 36.5748095400 -60 59 02.159226168           ~ 34 0
135 UCAC4 145-012402 * 08 01 40.0948194408 -61 04 42.310720524   13.337 12.704 12.591   ~ 16 0
136 Gaia DR3 5290856657307951232 * 08 01 55.9203681504 -60 12 29.178600732           ~ 15 0
137 UCAC4 149-012654 * 08 01 57.6199747056 -60 21 16.786124460   14.648 13.833 13.855   ~ 17 0
138 UCAC4 148-013197 * 08 02 07.2814022160 -60 31 04.797716844   13.012 12.437 12.354   ~ 20 0
139 UCAC4 147-012656 * 08 02 13.0440004416 -60 46 31.415542716   14.176 13.430 13.323   ~ 17 0
140 Gaia DR3 5290002989607023488 * 08 02 17.1935999040 -60 57 29.124149724           ~ 15 0
141 TYC 8924-1511-1 * 08 02 23.2705112664 -61 00 05.667887448   12.96 12.50     ~ 18 0
142 Gaia DR3 5290001718296770688 * 08 02 25.0235760744 -61 01 11.757088848           ~ 16 0
143 UCAC4 146-012859 * 08 02 45.8706174168 -60 48 33.675402096   13.667 13.020 12.903   ~ 16 0
144 UCAC4 145-012515 * 08 02 57.8598761952 -61 01 43.482467532   13.589 12.939 12.813   ~ 18 0
145 UCAC4 145-012531 * 08 03 09.3355669896 -61 06 36.170853336   12.823 12.233 12.134   ~ 17 0
146 UCAC4 146-012911 * 08 03 22.6659768984 -60 56 00.368742156   14.201 13.446 13.265   ~ 16 0
147 2MASS J08032595-6058517 * 08 03 25.9471121496 -60 58 51.801621564     17.85   15.63 ~ 17 0
148 UCAC4 146-012920 * 08 03 30.3457253904 -60 52 33.736452996   13.642 12.984 12.821   ~ 17 0
149 UCAC4 146-012924 * 08 03 31.3266803808 -60 57 53.790785028   14.123 13.407 13.208   ~ 14 0
150 UCAC4 144-012370 * 08 03 38.2051432128 -61 12 09.138705948   13.920 13.218 13.093   ~ 16 0
151 HD 67277 Ro* 08 03 41.6431002984 -60 54 27.201228984   8.24 8.26     B8III 41 0
152 Gaia DR3 5290792851274423296 * 08 04 03.9158409000 -60 30 39.844680768           ~ 16 0
153 UCAC4 147-012825 * 08 04 04.2697466496 -60 39 03.560638140   12.982 12.420 12.343   ~ 19 0
154 Gaia DR3 5290011235944457088 * 08 04 11.7194458224 -61 00 08.409943404           ~ 18 0
155 UCAC4 145-012633 * 08 04 30.0203024088 -61 04 30.672182136   13.686 12.998 12.862   ~ 19 0
156 CD-60 2051 * 08 04 33.4437313080 -61 20 41.422957512   11.09 10.84     ~ 16 0
157 UCAC4 148-013400 * 08 04 34.7682413424 -60 27 48.655770876   14.342 13.566 13.388   ~ 15 0
158 TYC 8924-1868-1 * 08 04 37.7740604640 -61 15 01.736236404   11.95 11.38     ~ 19 0
159 UCAC4 145-012664 * 08 04 56.5644029304 -61 02 46.651242984   14.527 13.756 13.593   ~ 16 0
160 UCAC4 148-013444 * 08 05 03.7594674960 -60 24 31.583195460   14.931 14.088 13.861   ~ 15 0
161 Gaia DR3 5289958425026796288 * 08 05 08.5677893592 -61 11 14.678489328           ~ 16 0
162 NGC 2632 OpC 08 39 58.4 +19 36 33           ~ 1733 0
163 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
164 NGC 6791 OpC 19 20 52.8 +37 46 40   10.52 9.5     ~ 1120 0
165 NGC 6811 OpC 19 37 21.8 +46 22 43   7.47 6.8     ~ 435 0

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