2019A&A...624A.128B

Query : 2019A&A...624A.128B

2019A&A...624A.128B - Astronomy and Astrophysics, volume 624A128-128 (2019/4-1)

The VLT-FLAMES Tarantula Survey. XXX. Red stragglers in the clusters Hodge 301 and SL 639.

BRITAVSKIY N., LENNON D.J., PATRICK L.R., EVANS C.J., HERRERO A., LANGER N., VAN LOON J.T., CLARK J.S., SCHNEIDER F.R.N., ALMEIDA L.A., SANA H., DE KOTER A. and TAYLOR W.D.

Abstract (from CDS):


Aims. We estimate physical parameters for the late-type massive stars observed as part of the VLT-FLAMES Tarantula Survey (VFTS) in the 30 Doradus region of the Large Magellanic Cloud (LMC).
Methods. The observational sample comprises 20 candidate red supergiants (RSGs) which are the reddest ((B-V)>1mag) and brightest (V<16mag) objects in the VFTS. We use optical and near-infrared (near-IR) photometry to estimate their temperatures and luminosities, and introduce the luminosity-age diagram to estimate their ages.
Results. We derive physical parameters for our targets, including temperatures from a new calibration of (J-Ks)0 colour for luminous cool stars in the LMC, luminosities from their J-band magnitudes (thence radii), and ages from comparisons with current evolutionary models. We show that interstellar extinction is a significant factor for our targets, highlighting the need to take it into account in the analysis of the physical parameters of RSGs. We find that some of the candidate RSGs could be massive AGB stars. The apparent ages of the RSGs in the Hodge 301 and SL 639 clusters show a significant spread (12-24Myr). We also apply our approach to the RSG population of the relatively nearby NGC 2100 cluster, finding a similarly large spread.
Conclusions. We argue that the effects of mass transfer in binaries may lead to more massive and luminous RSGs (which we call "red stragglers") than expected from single-star evolution, and that the true cluster ages correspond to the upper limit of the estimated RSG ages. In this way, the RSGs can serve as a new and potentially reliable age tracer in young star clusters. The corresponding analysis yields ages of 24–3+5Myr for Hodge 301, 22–5+6Myr for SL 639, and 23–2+4Myr for NGC 2100.

Abstract Copyright: © ESO 2019

Journal keyword(s): stars: late-type - stars: fundamental parameters - supergiants - open clusters and associations: individual: NGC 2100 - open clusters and associations: individual: Hodge 301 - open clusters and associations: individual: SL 639

Nomenclature: Table A.1: VFTS NNNN (Nos 2001-2102).

Simbad objects: 132

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Number of rows : 132
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 SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
4 VFTS 2001 * 05 36 51.1128453072 -69 05 12.368283864   17.3 16.63     ~ 1 0
5 [W60] A61 s*r 05 37 13.5009609792 -69 08 34.641177540   16.31 14.17 12.92   M3Ia-Iab 16 0
6 VFTS 2003 * 05 37 15.2092800504 -69 00 27.968243904   14.62 13.76     ~ 1 0
7 OGLE LMC-LPV-74906 LP* 05 37 16.0784144376 -69 08 52.865216232   17.6 15.683   13.462 ~ 7 0
8 VFTS 2004 * 05 37 22.8473449008 -69 01 49.282815072   14.3 13.74     ~ 1 0
9 VFTS 2005 * 05 37 23.8969366704 -69 04 40.470848040   17.61 16.72     ~ 1 0
10 VFTS 2006 * 05 37 29.1495958512 -69 02 10.560860088   17.31 16.62     ~ 1 0
11 UCAC2 1803202 * 05 37 31.0591700832 -69 10 23.988428652   16.18 15.5 15.29   G8V 3 0
12 OGLE LMC-LPV-75294 LP* 05 37 32.7244487328 -68 58 22.957438476   18.18 16.53   14.855 ~ 3 0
13 OGLE LMC-LPV-75306 LP* 05 37 33.1063920384 -69 01 57.370238004   18.37 16.79   15.195 ~ 2 0
14 VFTS 2010 * 05 37 34.5917947416 -69 12 20.541524076   17.87 16.83     ~ 1 0
15 RM 1-703 s*r 05 37 35.9786637816 -69 12 29.804546160   15.68 13.732   11.695 K4Iab-Ib 21 0
16 VFTS 2011 * 05 37 39.7777455864 -69 10 12.043512516   17.86 16.86     ~ 1 0
17 OGLE LMC-LPV-75492 LP* 05 37 42.0924879624 -69 09 01.428934752   18.15 16.359   14.272 M1III 3 0
18 TYC 9163-634-1 * 05 37 43.9821032952 -69 10 35.847001452   12.47 11.65 11.66   ~ 6 0
19 VFTS 2014 * 05 37 44.650 -69 00 55.54   18.06 16.74     ~ 1 0
20 [M2002] LMC 169212 * 05 37 46.4582292600 -69 11 16.931460912   15.26 14.8     F5V 3 0
21 [M2002] LMC 169292 * 05 37 48.040 -69 10 02.44   16.87 16.3     G 2 0
22 VFTS 2017 * 05 37 49.3704496128 -69 06 13.303918152   17.63 16.13     ~ 1 0
23 VFTS 2018 * 05 37 49.4744350464 -69 00 02.869980840   16.81 15.9     ~ 1 0
24 VFTS 2019 * 05 37 50.1261700104 -69 13 34.259121876   18.24 16.74     ~ 1 0
25 RMC 103F * 05 37 50.2177692648 -69 04 24.292979292   12.71 11.77 11.56 10.78 ~ 14 0
26 VFTS 2021 * 05 37 50.6758253616 -69 12 48.616342272   14.12 13.52     ~ 1 0
27 NGC 2060 SNR 05 37 51.4466169456 -69 10 23.947092084   9.69 9.59     ~ 380 2
28 UCAC2 1803294 * 05 37 51.7860927264 -69 08 08.715553944   16.56 15.8 15.72   K0/K1 2 0
29 VFTS 2023 * 05 37 52.3706406696 -69 00 16.051986504   15.94 15.18     ~ 1 0
30 UCAC2 1803299 * 05 37 53.1774504144 -69 11 50.874508068 15.063 14.795 13.879 13.75 12.990 O7III 6 0
31 VFTS 2025 * 05 37 54.0096288384 -68 57 19.652099580   17.28 16.32     ~ 1 0
32 VFTS 2026 * 05 37 54.6342365352 -68 58 19.496177616   16.02 15.06     ~ 1 0
33 [MG73] 84 s*r 05 37 54.6397460568 -69 09 03.237511644   15.83 15.4 12.90   K4.5Iab-Ib 17 0
34 VFTS 2027 * 05 37 58.2736175256 -69 02 09.408302916   17.44 16.57     ~ 1 0
35 SP77 54-25 s*y 05 37 58.6665694608 -69 14 23.994668400   15.36 13.238 12.08 11.116 G5Ia 23 0
36 NAME 30 Dor Region reg 05 38.0 -69 06           ~ 261 0
37 UCAC2 1803323 * 05 38 00.5698937424 -69 09 41.519164968   16.71 15.0 14.34   ~ 10 0
38 VFTS 2029 * 05 38 02.5049329248 -69 03 41.918299236   16.79 16.04     ~ 1 0
39 UCAC2 1803330 * 05 38 03.9187880952 -69 09 26.945604936   16.49 14.8 16.16   ~ 3 0
40 VFTS 2031 * 05 38 04.9672322520 -69 07 34.209228432   16.26 15.3     ~ 1 0
41 [MG73] 90 s*r 05 38 06.6023511648 -69 03 45.146281680   16.36 14.06 12.91   K4Iab-Ib 18 0
42 VFTS 2032 * 05 38 10.3442071176 -69 15 08.364574404   17 16.32     ~ 1 0
43 VFTS 2033 * 05 38 13.1870633088 -69 05 36.592312524   15.03 14.25     ~ 1 0
44 VFTS 2034 * 05 38 14.3962611960 -69 06 04.904211240   17.37 16.36     ~ 1 0
45 OGLE LMC-LPV-76154 LP* 05 38 14.6339482200 -69 00 57.568972464   18.65 16.269   13.816 ~ 7 0
46 VFTS 2036 * 05 38 14.7255713712 -69 14 52.031011272   18.5 16.81     ~ 1 0
47 H88 301 Cl* 05 38 16 -69 04.0   11.18 10.89     ~ 80 0
48 V* Z Dor s*r 05 38 16.0018297704 -69 10 11.237224368   16.798 15.037 12.49 11.367 M4Ia-Iab 43 0
49 VFTS 2037 * 05 38 16.0307972760 -68 58 03.866057868   15.59 14.87     ~ 1 0
50 [MG73] 93 LP* 05 38 16.6807937832 -69 04 13.956275532   16.39 13.905   11.453 M 18 0
51 [MG73] 94 s*r 05 38 17.0152617840 -69 04 00.907531536   12.38 10.64     K4Iab 14 0
52 2MASS J05381763-6904119 * 05 38 17.639 -69 04 11.92   15.72 13.96     ~ 19 0
53 OGLE LMC-LPV-76225 LP* 05 38 17.850 -69 15 37.68   18.24 16.74   15.172 ~ 2 0
54 VFTS 2039 * 05 38 19.110 -68 59 01.96   16.94 16.26     ~ 1 0
55 VFTS 2040 * 05 38 19.8777580008 -68 56 27.132763848   15.18 14.5     ~ 1 0
56 VFTS 2041 * 05 38 23.3782148040 -68 59 57.731568756   17.39 16.78     ~ 1 0
57 VFTS 2042 * 05 38 23.6400945840 -69 14 57.028299288   17.51 16.86     ~ 1 0
58 VFTS 2043 * 05 38 24.9219651048 -69 11 13.766999640   16.57 16.04     ~ 1 0
59 Dor IRS 25 * 05 38 26.5074227112 -69 03 11.111750532   17.08 16.33 15.352   ~ 2 0
60 WOH S 452 s*r 05 38 26.6986101936 -69 08 52.643186124   16.48 14.02 13.96 11.66 K5Ia-Iab 20 0
61 [KKB2007] 30 Dor-12 Y*? 05 38 30.0346987488 -69 06 25.940453364   17.34 16.26     ~ 2 0
62 2MASS J05383096-6901159 * 05 38 30.9693446208 -69 01 15.904957944   12.49 12     ~ 4 0
63 2MASS J05383531-6903540 * 05 38 35.3088783960 -69 03 54.184617072   16.33 15.61     GV 2 0
64 Cl* NGC 2070 SMB 222 * 05 38 38.52 -69 06 46.8   15.99 15.24   14.68 G: 3 0
65 VFTS 2049 * 05 38 39.2178902352 -69 15 30.386112840   16.97 16.32     ~ 1 0
66 [P93] 829 * 05 38 41.2059299232 -69 08 52.085967180   18.33 16.89     ~ 2 0
67 NGC 2070 Cl* 05 38 42 -69 06.0     7.25     ~ 406 1
68 RMC 136 Cl* 05 38 42.396 -69 06 03.36   5.81 5.40     ~ 2236 2
69 [P93] 1007 * 05 38 43.1469395544 -69 08 35.660342184   15.96 15.35     GV 2 0
70 VFTS 2053 PM* 05 38 43.9067482080 -69 12 43.978081464   18.2 16.73     ~ 1 0
71 VFTS 2052 * 05 38 43.9272823200 -68 59 40.067306160   17.12 16.68     ~ 1 0
72 VFTS 2054 * 05 38 45.5036002656 -69 00 17.438260248   14.58 13.89     ~ 1 0
73 [P93] 10007 * 05 38 48.1435967760 -69 09 45.170332704   17.43 16.73     GV 3 0
74 VFTS 2056 * 05 38 48.2287943016 -69 08 05.691380100   15.62 15.02     ~ 1 0
75 W61 7-8 s*r 05 38 48.4687923888 -69 05 32.689672692   15.928 13.617   11.044 M3.5Ia 27 0
76 2MASS J05385119-6906411 Y*? 05 38 51.1942551336 -69 06 41.207439744   17.26 15.13   13.05 ~ 11 0
77 VFTS 2057 * 05 38 52.5739795872 -69 11 24.438884028   18.73 16.67     ~ 1 0
78 W61 7-23 * 05 38 54.6792568824 -69 07 44.772703932   13.33 12.37 11.84   K0V 9 0
79 VFTS 2059 * 05 38 57.2867123880 -69 00 33.789485592   16.58 15.89     ~ 1 0
80 VFTS 2060 * 05 38 58.5419964072 -68 58 03.335684844   15.37 14.77     ~ 1 0
81 2MASS J05390047-6908411 Y*? 05 39 00.4789957728 -69 08 41.294337612   15.67 15     ~ 3 0
82 VFTS 2062 * 05 39 02.3226367560 -69 14 59.629065756   16.25 15.63     ~ 1 0
83 VFTS 2063 * 05 39 03.5352010008 -69 14 14.411541084   17.46 16.86     ~ 1 0
84 OGLE LMC-LPV-77177 LP* 05 39 07.1457863256 -69 01 52.872218868   17.34 15.661   13.166 M 9 0
85 VFTS 2064 * 05 39 07.4279677344 -69 04 20.479350072   15.5 14.9     ~ 1 0
86 VFTS 2065 * 05 39 12.4777031040 -68 59 03.945185916   16.93 16.4     ~ 1 0
87 VFTS 2066 * 05 39 12.5168514960 -69 04 09.006929148   15.37 14.61     ~ 1 0
88 VFTS 2067 * 05 39 13.6254410280 -69 14 38.054298912   17.58 16.91     ~ 1 0
89 VFTS 2068 * 05 39 14.9225329680 -69 11 51.108347580   14.91 14.14     ~ 1 0
90 VFTS 2069 * 05 39 18.1642485216 -69 08 48.433770960   15.69 15.02     ~ 1 0
91 VFTS 2070 * 05 39 24.6531492360 -69 02 19.419885672   17.49 16.79     ~ 1 0
92 VFTS 2071 * 05 39 26.2678835544 -69 00 19.536142680   17.52 16.87     ~ 1 0
93 VFTS 2072 * 05 39 26.5736907072 -69 06 04.830968052   16.95 16.12     ~ 1 0
94 VFTS 2073 * 05 39 27.6558298272 -69 00 26.741793600   16.69 15.93     ~ 1 0
95 2MASS J05392816-6905504 s*r 05 39 28.1781367728 -69 05 50.533755216 15.123 14.694 13.486     K:I 6 0
96 VFTS 2074 * 05 39 30.2639845200 -69 06 36.454868748   16.66 15.93     ~ 1 0
97 VFTS 2075 * 05 39 32.800 -69 00 07.39   17.6 16.49     ~ 1 0
98 VFTS 2076 * 05 39 33.6373317528 -69 12 23.557180500   14.28 13.64     ~ 1 0
99 VFTS 2077 * 05 39 35.4841363632 -69 04 38.963270568   18.39 16.93     ~ 2 0
100 VFTS 2078 * 05 39 38.0861199504 -69 09 14.664309768   16.25 15.28     ~ 1 0
101 [SL63] 639 As* 05 39 39 -69 12.1   12.13 11.53     ~ 31 0
102 VFTS 2079 * 05 39 39.1175034096 -68 59 13.304306364   17.51 16.88     ~ 1 0
103 VFTS 2080 * 05 39 39.2000863608 -69 07 02.015076360   17.38 16.55     ~ 1 0
104 W61 8-4 LP* 05 39 39.4136933928 -69 11 52.047776832   16.72 14.667   11.803 M 15 0
105 W61 8-7 Ev* 05 39 41.7818080440 -69 11 31.010327160   16.8 14.670   12.087 M 18 0
106 VFTS 2081 * 05 39 41.790 -69 11 48.87   17.54 16.63     ~ 1 0
107 VFTS 2082 * 05 39 44.6972687784 -69 04 30.276810084   16.88 15.57     ~ 1 0
108 [SDP2012] 3 227 Y*? 05 39 47.8316350488 -69 11 39.211825236   16.77 16.896   16.250 ~ 2 0
109 2MASS J05395239-6909412 * 05 39 52.3921131000 -69 09 41.242502556   15.67 14.23 13.20   ~ 6 0
110 VFTS 2084 * 05 39 53.0572541664 -69 08 50.143905060   17.68 16.61     ~ 1 0
111 SHV 0540184-690805 V* 05 39 57.7135640256 -69 06 36.361426140   14.94 14.17     ~ 2 0
112 OGLE LMC-LPV-78127 LP* 05 39 58.110 -69 02 40.95   18.3 16.429   14.114 ~ 3 0
113 VFTS 2087 * 05 40 00.1650002736 -69 02 23.319911076   15.08 14.09     ~ 1 0
114 OGLE LMC-LPV-78177 LP* 05 40 00.7845229920 -69 01 39.938865168   18.49 16.82   14.851 ~ 3 0
115 OGLE LMC-LPV-78241 LP* 05 40 03.8230183584 -69 03 24.451754112   18.25 16.61   14.727 ~ 2 0
116 2MASS J05400700-6911415 * 05 40 07.0175128176 -69 11 41.496863316   16.87 14.92 13.68   ~ 7 0
117 OGLE LMC-LPV-78337 LP* 05 40 08.2716554160 -69 08 29.875800300   18.48 16.82   14.800 ~ 4 0
118 VFTS 2092 * 05 40 09.4541982432 -69 02 54.594678156   18.06 16.72     ~ 1 0
119 VFTS 2093 * 05 40 11.4467378088 -69 11 48.804915192   18.45 16.94     ~ 1 0
120 VFTS 2094 * 05 40 13.6178708472 -69 05 51.145165104   17.45 16.71     ~ 1 0
121 VFTS 2095 * 05 40 13.6391211552 -69 06 21.667466772   17.73 16.65     ~ 1 0
122 VFTS 2096 * 05 40 14.2838116896 -69 02 09.553799940   17.9 16.76     ~ 1 0
123 OGLE LMC-LPV-78444 LP* 05 40 14.4190218984 -69 06 41.492215080   18.54 16.88   14.945 ~ 3 0
124 VFTS 2098 * 05 40 24.7521337632 -69 02 24.310564476   16.83 16.2     ~ 1 0
125 VFTS 2099 * 05 40 26.8795390416 -69 08 20.784468012   18.43 16.82     ~ 1 0
126 VFTS 2100 * 05 40 28.0388201256 -69 07 48.449944632   17.23 16.58     ~ 1 0
127 VFTS 2101 * 05 40 28.9730210616 -69 03 46.224663948   15.2 14.5     ~ 1 0
128 OGLE LMC-LPV-78818 LP* 05 40 33.4104988296 -69 05 57.633663012   18.33 16.637   14.685 ~ 2 0
129 NGC 2100 Cl* 05 42 07.200 -69 12 26.99           ~ 195 0
130 NGC 3293 OpC 10 35 50.3 -58 14 04           ~ 327 0
131 RSGC 1 OpC 18 37 58 -06 53.0           ~ 117 0
132 NAME Local Group GrG ~ ~           ~ 9325 0

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