2013AJ....145..134C

Query : 2013AJ....145..134C

2013AJ....145..134C - Astron. J., 145, 134 (2013/May-0)

Ruprecht 147: the oldest nearby open cluster as a new benchmark for stellar astrophysics.

CURTIS J.L., WOLFGANG A., WRIGHT J.T., BREWER J.M. and JOHNSON J.A.

Abstract (from CDS):

Ruprecht 147 is a hitherto unappreciated open cluster that holds great promise as a standard in fundamental stellar astrophysics. We have conducted a radial velocity survey of astrometric candidates with Lick, Palomar, and MMT observatories and have identified over 100 members, including 5 blue stragglers, 11 red giants, and 5 double-lined spectroscopic binaries (SB2s). We estimate the cluster metallicity from spectroscopic analysis, using Spectroscopy Made Easy (SME), and find it to be [M/H] = +0.07±0.03. We have obtained deep CFHT/MegaCam g'r'i'z' photometry and fit Padova isochrones to the (g' - i') and Two Micron All Sky Survey (J - KS) color-magnitude diagrams, using the τ2 maximum-likelihood procedure of Naylor, and an alternative method using two-dimensional cross-correlations developed in this work. We find best fits for Padova isochrones at age t = 2.5±0.25 Gyr, m - M = 7.35 ±0.1, and AV= 0.25±0.05, with additional uncertainty from the unresolved binary population and possibility of differential extinction across this large cluster. The inferred age is heavily dependent on our choice of stellar evolution model: fitting Dartmouth and PARSEC models yield age parameters of 3 Gyr and 3.25 Gyr, respectively. At ∼300 pc and ∼3 Gyr, Ruprecht 147 is by far the oldest nearby star cluster.

Abstract Copyright: ∼

Journal keyword(s): open clusters and associations: general - open clusters and associations: individual: Ruprecht 147

VizieR on-line data: <Available at CDS (J/AJ/145/134): table3.dat>

Nomenclature: Table 3: [CWW2013] NNN (Nos 1-108).

Simbad objects: 121

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Number of rows : 121
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 NGC 752 OpC 01 56 53.7 +37 45 06           ~ 712 0
2 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
3 * alf CMi SB* 07 39 18.11950 +05 13 29.9552 0.82 0.79 0.37 -0.05 -0.28 F5IV-V+DQZ 1925 0
4 NGC 2632 OpC 08 39 58.4 +19 36 33           ~ 1733 0
5 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
6 NGC 2682 143 SB* 08 51 23.7746734704 +11 49 49.338989364   12.39 11.420   10.61 G4III 105 0
7 Cl Loden 1 err 10 05 14 -55 48.3           ~ 25 0
8 GD 153 WD* 12 57 02.3224909560 +22 01 52.634778240 11.883 13.060 13.349 13.488 13.669 DA1.2 380 0
9 HZ 43A WD* 13 16 21.8532409720 +29 05 55.411186877   12.52 12.66     DAwk 477 0
10 TYC 6283-1022-1 * 19 11 47.3129559720 -16 32 48.629147280   11.76 11.15     ~ 20 0
11 2MASS J19124958-1550340 * 19 12 49.5930276960 -15 50 34.156200192           ~ 7 0
12 HD 179447 * 19 13 15.2669471160 -17 06 20.876474376   10.34 9.27     A0 23 0
13 HD 179446 * 19 13 15.4141137456 -16 16 12.332152236   11.20 10.62     F3/5V 29 0
14 HD 179498 * 19 13 22.2138731328 -16 45 09.753453072   10.56 9.97     G0V 16 0
15 BD-16 5205 * 19 13 36.4925144256 -15 48 10.647196812   11.19 10.18     ~ 9 0
16 UCAC2 25877998 * 19 13 41.2687605072 -16 10 20.166261636   12.66 11.98 11.92   ~ 21 0
17 UCAC4 366-165332 PM* 19 13 43.3439652528 -16 49 11.053675596   13.07 12.35 12.32   ~ 23 0
18 UCAC4 369-164628 * 19 13 45.1291102152 -16 19 33.964211136   14.869 13.806 13.657   ~ 8 0
19 HD 179573 * 19 13 48.1789896936 -16 50 06.191092932   10.23 9.32     G8/K0IV 29 0
20 HD 179691 RB? 19 14 02.7316222752 -15 54 05.740884360   9.66 8.46     K1III 24 0
21 UCAC4 371-164424 * 19 14 12.9406691952 -15 54 29.254401504   12.964 12.143 12.019   ~ 12 0
22 HD 179766 * 19 14 26.5193550576 -16 06 34.120300896   11.02 10.43     G2/3V 30 0
23 TYC 6296-478-1 Er* 19 14 28.1635059840 -16 20 02.342709348   12.32 11.85     ~ 29 0
24 HD 179803 * 19 14 29.0702932968 -15 49 05.668030200   11.32 10.65     F8/G0(V) 24 0
25 2MASS J19145199-1541379 * 19 14 51.9969461952 -15 41 37.949837820           ~ 8 0
26 TYC 6296-67-1 * 19 14 58.4012099376 -16 50 09.012628824   11.59 11.18     ~ 22 0
27 UCAC4 370-167958 * 19 15 00.1306427160 -16 05 51.710031492   12.549 11.863 11.839   ~ 22 0
28 TYC 6296-268-1 * 19 15 00.5122072248 -16 14 24.508088520   12.10 11.36     ~ 24 0
29 HD 179924 * 19 15 02.7531728160 -16 09 40.528871352   11.07 10.46     F7/G0 14 0
30 TYC 6300-1170-1 * 19 15 08.6012470896 -16 57 41.358718908   11.35 10.61     ~ 17 0
31 LSE 13 WD? 19 15 09.2538324552 -15 52 24.094167600   12.23 11.65     DA? 33 0
32 2MASS J19151156-1726308 * 19 15 11.561 -17 26 30.88           ~ 1 0
33 TYC 6300-98-1 * 19 15 12.5978912136 -17 05 12.163621488   11.71 11.13     ~ 24 0
34 TYC 6300-557-1 * 19 15 14.9884531704 -17 20 17.758180320   12.12 11.30     ~ 6 0
35 HD 179974 * 19 15 15.4078171224 -16 19 51.660385392   11.07 10.32     F8V 28 0
36 TYC 6296-303-1 * 19 15 18.9717445776 -16 39 24.456990564   11.99 11.94     ~ 23 0
37 UCAC2 25878703 * 19 15 21.4167515904 -16 00 10.690801848   13.72 12.90 12.81   ~ 29 0
38 TYC 6296-438-1 * 19 15 24.0655903512 -16 21 52.004107116   12.40 11.95     ~ 25 0
39 TYC 6296-96-1 * 19 15 24.6597488448 -16 51 22.320846108   11.98 11.34     ~ 28 0
40 HD 180015 RG* 19 15 26.1160554960 -16 05 57.058273932   8.69 7.41     K0III 28 0
41 HD 180016 * 19 15 26.3849374632 -17 00 15.951077748   10.89 10.25     F6/8V 10 0
42 TYC 6296-483-1 * 19 15 29.8189478256 -15 51 04.784813244   11.72 11.24     ~ 29 0
43 HD 180033 ** 19 15 32.8257216288 -16 20 38.901663384   10.87 10.22 10.24   K1(III) 25 1
44 UCAC4 368-169695 * 19 15 33.5437327272 -16 25 36.861880332   16.171 14.904 14.606   ~ 19 0
45 HD 180061 * 19 15 36.2671238112 -15 57 46.091467512   10.94 10.40     F8/G0V 31 0
46 TYC 6296-181-1 * 19 15 42.6912662928 -16 33 05.098517712   11.77 11.29     ~ 29 0
47 TYC 6296-654-1 * 19 15 45.1157542368 -16 23 15.763604424   11.96 11.49     ~ 24 0
48 HD 180112 RG* 19 15 51.2981017032 -16 17 59.058060684   9.63 8.46     K0III 33 0
49 HD 180130 * 19 15 58.4151390096 -16 15 25.822100484   11.06 10.27     F6/8V 25 0
50 TYC 6296-1372-1 * 19 16 04.5209761296 -16 05 31.285274172   11.40 10.90     ~ 13 0
51 UCAC4 366-166394 * 19 16 05.2342810368 -16 52 56.137896192   12.192 11.573 11.542   ~ 18 0
52 UCAC4 368-169912 * 19 16 05.8960727088 -16 29 48.140248848     12.602 12.468   ~ 21 0
53 2MASS J19160785-1610360 * 19 16 07.8496726920 -16 10 36.408299124           ~ 7 0
54 HD 180177 * 19 16 08.6509127376 -16 11 14.818959168   10.61 9.94     F6/8V 28 0
55 TYC 6296-1176-1 * 19 16 08.7868292712 -15 24 28.007198604   12.10 11.81     FV 26 0
56 UCAC2 25879056 * 19 16 11.1986222208 -16 21 48.487562028   13.26 12.48 12.80   ~ 22 0
57 HD 180195 RB? 19 16 14.5585398480 -16 24 07.202368116   10.87 9.89     K1/3(III) 17 0
58 UCAC4 370-168518 * 19 16 17.5717969296 -16 00 17.766784980   14.265 13.315 13.166   ~ 10 0
59 NGC 6774 OpC 19 16 17.6 -16 20 45           ~ 258 0
60 HD 180228 * 19 16 17.9247388728 -16 19 24.774914784   10.32 9.19     K1III 7 0
61 TYC 6296-1382-1 * 19 16 18.6421754400 -16 11 30.494172804   11.75 11.31     ~ 7 0
62 HD 180229 BS* 19 16 19.6573571496 -16 34 09.457560372   8.24 8.21     B9V 33 0
63 TYC 6296-1217-1 * 19 16 21.6936601752 -16 09 51.096165480   11.36 10.74     ~ 10 0
64 K2-231 * 19 16 22.0389081336 -15 46 15.980203956           ~ 40 0
65 UCAC4 365-170303 * 19 16 24.7806783120 -17 10 37.568113320   13.464 12.687 12.608   ~ 8 0
66 2MASS J19162501-1632018 * 19 16 25.0092282959 -16 32 01.923455012           ~ 7 0
67 UCAC2 25879166 * 19 16 26.5642548888 -16 14 54.435017256   14.11 13.18 13.06   ~ 15 0
68 TYC 6296-92-1 * 19 16 29.3418020232 -16 45 54.546078348   11.30 10.72     ~ 6 0
69 TYC 6296-1456-1 * 19 16 32.3132181840 -16 11 34.634598468   11.52 10.76     ~ 20 0
70 TYC 6296-1809-1 * 19 16 33.3905154744 -16 20 21.602806008   11.11 10.48     ~ 27 0
71 HD 180299 SB* 19 16 33.4442826024 -16 07 51.553564320   11.14 10.43     F8/G1V 14 0
72 TYC 6300-237-1 * 19 16 35.2500712704 -17 05 07.615790844   11.19 10.62     ~ 18 0
73 HD 180298A * 19 16 36.2624064672 -16 07 36.615840996   11.43 10.73     ~ 11 0
74 TYC 6300-257-1 * 19 16 36.7302660480 -17 13 10.158774312   13.37 12.30     ~ 29 0
75 UCAC4 369-165819 * 19 16 36.7997867640 -16 23 03.287626872   15.680 14.365 14.164   ~ 17 0
76 UCAC4 370-168669 * 19 16 37.3203347568 -16 00 05.064715224       14.007   ~ 10 0
77 TYC 6296-1801-1 * 19 16 38.2681989288 -16 25 03.952126200   12.00 11.40     ~ 11 0
78 TYC 6296-1424-1 * 19 16 39.7705924896 -16 26 31.708941900   11.00 10.34     ~ 9 0
79 HD 180326 * 19 16 40.7346562896 -16 16 41.088428544   8.52 8.38     A1V 14 0
80 HD 180327 * 19 16 43.8907531440 -16 26 24.089568720   9.60 9.18     A2 18 0
81 UCAC4 369-165865 * 19 16 44.1800236224 -16 12 22.285136412       12.279   ~ 15 0
82 UCAC4 369-165866 * 19 16 44.4026124648 -16 15 33.873860988   14.564 13.443 13.255   ~ 17 0
83 TYC 6300-140-1 * 19 16 44.9580486960 -17 17 07.465787700   11.24 10.60     F 20 0
84 HD 180328 RB? 19 16 45.7489846728 -16 35 22.683133248   10.49 9.38     G8/K0(III) 30 0
85 TYC 6296-1123-1 * 19 16 46.6313897160 -16 19 20.864759916   11.24 10.64     ~ 27 0
86 UCAC2 25879337 * 19 16 47.2553811264 -16 04 09.266935116   13.23 12.48 12.57   G0/2V 26 0
87 HD 180363 * 19 16 48.2298569760 -16 11 52.317333492   10.01 9.75     A3III 16 0
88 TYC 6296-1205-1 * 19 16 49.2249333456 -16 13 22.316226096   11.81 11.23     ~ 9 0
89 TYC 6300-605-1 * 19 16 54.7755904944 -17 02 12.933142548   10.94 10.33     ~ 19 0
90 TYC 6296-1341-1 * 19 16 55.7382569256 -16 03 21.919894488   11.67 10.79     ~ 23 0
91 HD 180385 * 19 16 56.6999422080 -16 12 26.434775952   10.38 9.80     F7/8V 25 0
92 TYC 6296-1471-1 * 19 16 57.9996042880 -16 14 27.829949905   12.30 11.51     G 8 0
93 UCAC2 25650963 * 19 16 59.4110279160 -16 35 27.118803876     12.50 12.49   ~ 25 0
94 2MASS J19170128-1609423 * 19 17 01.2882346488 -16 09 42.305496912           ~ 7 0
95 UCAC2 25879476 * 19 17 02.8553223288 -16 05 16.596390660   13.56 12.76 12.67   ~ 24 0
96 HD 180411 RG* 19 17 03.4308274560 -17 03 13.761062784   9.48 8.38     K0III 27 0
97 TYC 6296-1556-1 * 19 17 04.3393777944 -16 23 18.591230760   11.90 11.06     ~ 26 0
98 TYC 6296-1876-1 * 19 17 04.8206843712 -16 36 52.585824348   11.15 10.51     ~ 22 0
99 HD 180461 RG* 19 17 11.3116327392 -16 03 08.225270388   9.53 8.37     K0III 28 0
100 HD 180487 * 19 17 19.8410241552 -16 07 38.378438076   10.87 10.23     F6/7(V) 17 0
101 TYC 6296-1857-1 * 19 17 21.7190340576 -15 35 59.322548184   11.65 11.07     ~ 12 0
102 HD 180512 SB* 19 17 23.8328458800 -16 12 48.855601332   10.66 10.03     F0/2 29 0
103 HD 180511 RG* 19 17 23.8422945648 -16 04 24.347472348   9.03 7.64     K2III 32 0
104 HD 180513 * 19 17 28.6532733528 -16 33 31.291354548   10.62 10.16     F3V 10 0
105 UCAC4 370-168980 * 19 17 29.4107965440 -16 11 57.745766688   15.898 14.677 14.494   ~ 20 0
106 UCAC4 366-166973 * 19 17 34.0314284136 -16 52 17.793243804   13.28 12.54 12.39   ~ 49 0
107 HD 180563 * 19 17 39.3123075024 -16 36 34.852474980   10.74 10.26     G1/2V 14 0
108 TYC 6296-1836-1 * 19 18 00.5504413008 -16 36 01.697265756   11.02 10.57     ~ 20 0
109 UCAC4 367-163280 * 19 18 05.3657479176 -16 46 43.904539560   14.185 13.183 12.912   ~ 17 0
110 HD 180696 RG* 19 18 09.7841172912 -16 16 22.328006340   9.77 8.61     K0III 31 0
111 TYC 6296-1944-1 * 19 18 11.5560844776 -16 29 14.145981720   10.96 10.33     ~ 19 0
112 UCAC4 369-166377 * 19 18 13.5261882504 -16 14 49.737466464   15.04 13.98 13.80   ~ 17 0
113 HD 180730 BS* 19 18 14.3966259528 -16 41 22.645716180   8.75 8.39     A5III 29 0
114 HD 180793 * 19 18 31.2028542408 -16 14 42.240312312   11.10 10.56     F5V 26 0
115 HD 180795 RB? 19 18 37.4688872400 -17 12 57.561969456   9.51 8.39     K0III 24 0
116 TYC 6300-288-1 * 19 19 33.7288734456 -16 58 51.514380984   10.48 9.85     ~ 8 0
117 2MASS J19193779-1618312 * 19 19 37.7911403640 -16 18 31.250063700           ~ 2 0
118 HD 181130 * 19 19 51.5433489888 -16 03 58.459592340   11.04 10.31     G0V 21 0
119 TYC 6297-631-1 * 19 20 05.2207399896 -15 35 36.051474840   11.59 11.02     ~ 16 0
120 BD+28 4211 HS* 21 51 11.0221915656 +28 51 50.367627468 8.922 10.25 10.58 10.656 10.831 sdO2VIIIHe5 837 0
121 Feige 110 HS* 23 19 58.3996844256 -05 09 56.171142864 10.360 11.45 11.50 11.970 12.145 sdO8VIIIHe5 673 1

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