2023A&A...679A.134C

Query : 2023A&A...679A.134C

2023A&A...679A.134C - Astronomy and Astrophysics, volume 679A134 (2023/11-1)

New red giants in NGC 6791 and NGC 6819 using Kepler superstamps.

COVELO-PAZ A., THEMESSL N., ESPINOZA-ROJAS F. and HEKKER S.

Abstract (from CDS):

Context. Stars that are members of stellar clusters are assumed to be formed at the same time and place from material with the same initial chemical composition. These additional constraints on the ensemble of cluster stars make these stars suitable as benchmarks.
Aims. We aimed (1) to identify previously unknown red giants in the open clusters NGC 6791 and NGC 6819, (2) to extract their asteroseismic parameters, and (3) to determine their cluster membership.
Methods. We followed a dedicated method based on difference imaging to extract the light curves of potential red giants in NGC 6791 and NGC 6819 from Kepler superstamp data. We extracted the asteroseismic parameters of the stars that showed solar-like oscillations. We performed an asteroseismic membership study to identify which of these stars are likely to be cluster members.
Results. We found 149 red giant stars within the Kepler superstamps, 93 of which are likely cluster members. We were able to find 29 red giants that are not primary targets of Kepler, and therefore, their light curves had not been released previously. Five of these previously unknown red giants have a cluster membership probability greater than 95%.

Abstract Copyright: © The Authors 2023

Journal keyword(s): asteroseismology - stars: solar-type - techniques: photometric - open clusters and associations: individual: NGC 6791 - open clusters and associations: individual: NGC 6819

VizieR on-line data: <Available at CDS (J/A+A/679/A134): ngc6791.dat ngc6819.dat fits/*>

Simbad objects: 154

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Number of rows : 154
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 232 Sy2 00 42 45.814 -23 33 40.69   14.43   12.78   ~ 167 0
2 Gaia DR3 2051291949833615104 RG* 19 20 07.0737964882 +37 50 00.480043097           ~ 1 0
3 Gaia DR3 2051291709315482240 RG* 19 20 16.0592606629 +37 50 41.158770048           ~ 1 0
4 Cl* NGC 6791 SBG 611 RG* 19 20 19.7341289685 +37 46 54.990126268   16.425 14.977   13.534 K4III 41 0
5 Cl* NGC 6791 SBG 1110 RG* 19 20 24.4694858256 +37 46 13.978788096   16.547 15.106   13.665 ~ 21 0
6 Cl* NGC 6791 SBG 1705 RG* 19 20 28.7001059832 +37 43 16.976756640   16.558 15.213   13.882 ~ 37 0
7 2MASS J19203005+3750191 RG* 19 20 30.0574096344 +37 50 19.169912400           ~ 38 0
8 Cl* NGC 6791 SBG 2044 RG* 19 20 30.9241520616 +37 48 45.115369308     14.144   12.67 ~ 19 0
9 NGC 6791 3029 RG* 19 20 32.6674155384 +37 46 22.244828808   16.226 14.788   13.283 ~ 27 0
10 2MASS J19203274+3742021 RG* 19 20 32.7484697040 +37 42 02.205314532           ~ 10 0
11 NGC 6791 3036 RG* 19 20 34.8591532128 +37 46 29.935111620     14.1174   12.08 M1/M2III 48 0
12 Cl* NGC 6791 SBG 2915 RG* 19 20 35.8560387576 +37 46 52.103490348   16.447 15.020   13.551 ~ 20 0
13 Cl* NGC 6791 SBG 3354 RG* 19 20 37.8383397024 +37 45 25.044621696   16.660 15.298   13.912 ~ 30 0
14 NGC 6791 3030 RG* 19 20 37.8865365264 +37 44 49.101037188   15.841 14.529   13.168 K2/K3III 15 0
15 2MASS J19203884+3744346 RG* 19 20 38.8403631249 +37 44 34.695791284           K3III 14 0
16 NGC 6791 3031 RG* 19 20 39.2278399920 +37 44 37.344739920   16.223 14.85   13.53 C: 21 0
17 NGC 6791 3017 RG* 19 20 39.3453763272 +37 48 04.868503452   16.084 14.612   13.079 M0e 50 0
18 Gaia DR3 2051294045777741824 RG* 19 20 40.0133928859 +37 48 03.967273511           ~ 1 0
19 [TGM2014] 69011 RG* 19 20 40.0710248424 +37 51 05.221869768           ~ 7 0
20 Cl* NGC 6791 SBG 4162 RG* 19 20 40.8494153880 +37 46 21.667823472   15.904 14.551   13.217 K2/K3III 7 0
21 [TGM2014] 63011 RG* 19 20 40.8830689320 +37 51 13.641247620           ~ 2 0
22 Gaia DR2 2051287345628456320 RG* 19 20 41.0034960528 +37 46 21.408243708           ~ 5 0
23 Cl* NGC 6791 SBG 4202 RG* 19 20 41.0266039488 +37 43 02.595209988   16.826 15.503   14.192 ~ 34 0
24 NGC 6791 3016 RG* 19 20 41.9769533616 +37 47 54.179692152   15.94 14.1531     K3III 31 0
25 Cl* NGC 6791 GVZH R21 RG* 19 20 43.5655054944 +37 47 01.933389528   16.160 14.713   13.230 ~ 29 0
26 NGC 6791 2042 RG* 19 20 43.6819494240 +37 46 41.694843468   16.428 14.985   13.502 ~ 25 0
27 Gaia DR3 2051098706367845760 RG* 19 20 44.5586620913 +37 40 07.464409060           ~ 1 0
28 Cl* NGC 6791 SBG 5454 RG* 19 20 45.1752914208 +37 44 33.991699668   16.312 14.915   13.508 dC 43 0
29 Cl* NGC 6791 SBG 5503 RG* 19 20 45.3302254752 +37 47 17.943776700     14.60   13.27 dC 21 0
30 Cl* NGC 6791 SBG 5583 RG* 19 20 45.5711701846 +37 39 50.895140598     14.2186     K3III 37 0
31 2MASS J19204570+3754354 RG* 19 20 45.6989234175 +37 54 35.475323567           ~ 17 0
32 [TGM2014] 15006 RG* 19 20 45.7311182208 +37 44 26.316217968           ~ 6 0
33 NGC 6791 2045A RG* 19 20 46.0022821179 +37 47 54.982430038           ~ 1 0
34 Cl* NGC 6791 SBG 5796 RG* 19 20 46.2483052344 +37 49 10.567694640   16.566 15.223   13.867 ~ 42 0
35 NGC 6791 2051 RG* 19 20 47.6581688760 +37 47 32.280796536   16.16 14.1735     K3III 38 0
36 2MASS J19204873+3747124 RG* 19 20 48.7344738888 +37 47 12.316276140           ~ 15 0
37 Gaia DR2 2051293186784001664 RG* 19 20 48.7470193680 +37 47 15.161643816           ~ 5 0
38 NGC 6791 3013 RG* 19 20 49.6595959080 +37 44 07.802532240   15.923 14.588   13.264 K2/K3III 22 0
39 Cl* NGC 6791 SBG 7347 RG* 19 20 50.8241339976 +37 43 29.274967596   16.474 15.099   13.718 ~ 18 0
40 NGC 6791 1120 RG* 19 20 51.3732096072 +37 46 30.548365752   16.26 14.21   12.93 ~ 16 0
41 UCAC4 639-065892 RG* 19 20 51.8075831520 +37 46 48.099498060       15.886   ~ 6 0
42 [TGM2014] 6001 RG* 19 20 52.2597841104 +37 46 05.314138716           ~ 2 0
43 NGC 6791 1414 RG* 19 20 52.4354258184 +37 47 15.247848552   17.03 15.85   14.380 K3III 29 0
44 [TGM2014] 7001 RG* 19 20 52.5062384184 +37 46 04.371889296           ~ 6 0
45 NGC 6791 OpC 19 20 52.8 +37 46 40   10.52 9.5     ~ 1120 0
46 NGC 6791 1349 RG* 19 20 52.8818474088 +37 45 33.157234044   15.874 14.55   13.24 K2/K3III 65 0
47 NGC 6791 1418 RG* 19 20 53.5840602096 +37 47 18.848054256   16.507 15.117   13.720 ~ 22 0
48 NGC 6791 1308 RG* 19 20 54.1848898914 +37 46 28.557262230   16.059 14.554   12.988 M0.0III 22 0
49 KOI-3920 RG* 19 20 54.9957921336 +37 45 41.047901316   16.739 15.382   14.025 ~ 24 0
50 NGC 6791 3018 RG* 19 20 55.3072689384 +37 43 15.284180028   16.032 14.557   13.027 K4III 43 0
51 Gaia DR2 2051293702173683840 RG* 19 20 55.6273863504 +37 48 45.572835312           ~ 5 0
52 UCAC4 639-065934 RG* 19 20 55.8130285896 +37 42 30.738053412   16.196 14.917 14.690   ~ 14 0
53 NGC 6791 3009 RG* 19 20 56.2990343832 +37 44 33.478562148   16.12 14.2408     ~ 60 0
54 2MASS J19205671+3743074 RG* 19 20 56.7175871424 +37 43 07.477682700           ~ 15 0
55 Gaia DR3 2051105239017448448 RG* 19 20 57.6757584701 +37 44 21.860065516           ~ 1 0
56 Cl* NGC 6791 SBG 9786 RG* 19 20 57.7101815688 +37 49 01.226018208   16.791 15.435   14.065 C: 34 0
57 KOI-4940 RG* 19 20 57.8519081376 +37 47 06.743040972   16.866 15.520   14.170 ~ 35 0
58 NGC 6791 3020 RG* 19 20 58.7475123264 +37 43 13.088916768   15.990 14.60 14.356 13.25 ~ 30 0
59 Cl* NGC 6791 SBG 10407 RG* 19 20 59.5893586512 +37 48 10.811691504   16.840 15.498   14.158 ~ 31 0
60 Gaia DR2 2051293496021673728 RG* 19 21 00.0084804048 +37 48 01.524335220           ~ 5 0
61 Cl* NGC 6791 SBG 10674 RG* 19 21 00.4402905216 +37 47 16.106023932   16.990 15.646   14.290 ~ 13 0
62 Cl* NGC 6791 SBG 10695 RG* 19 21 00.5273922144 +37 50 18.845983896   15.843 14.511     ~ 37 0
63 Gaia DR2 2051293049345068672 RG* 19 21 00.6096425112 +37 46 49.553652396           ~ 5 0
64 NGC 6791 2014 RG* 19 21 00.8624204232 +37 46 39.656777664   16.091 14.636 14.192 13.23 ~ 48 0
65 Gaia DR2 2051105376456460160 RG* 19 21 01.1502328392 +37 46 31.324554804           ~ 5 0
66 Cl* NGC 6791 SBG 11006 RG* 19 21 01.4516544408 +37 48 05.187396816   17.081 15.777   14.467 ~ 27 0
67 [TGM2014] 7004 RG* 19 21 02.8982470944 +37 46 03.846073080           ~ 6 0
68 [TGM2014] 25005 BS* 19 21 03.3799803936 +37 46 19.825826664           ~ 7 0
69 Cl* NGC 6791 SBG 11598 RG* 19 21 03.4740147528 +37 46 37.593336612   17.092 15.792   14.491 ~ 12 0
70 Cl* NGC 6791 SBG 11797 RG* 19 21 04.1779730088 +37 46 22.671146820   16.953 15.653   14.359 ~ 20 0
71 Cl* NGC 6791 SBG 11862 RG* 19 21 04.4210434848 +37 46 09.852731796   16.851 15.547   14.257 ~ 17 0
72 Cl* NGC 6791 SBG 11895 RG* 19 21 04.5534449256 +37 46 53.440027968   16.967 15.651   14.337 ~ 20 0
73 NGC 6791 3006 RG* 19 21 04.7357814120 +37 45 56.211674508   15.92 14.1932     ~ 21 0
74 Cl* NGC 6791 SBG 12249 RG* 19 21 05.9536498512 +37 47 57.778493424   16.749 15.385   14.009 ~ 17 0
75 2MASS J19210604+3752049 RG* 19 21 06.0493245696 +37 52 05.042295732           ~ 38 0
76 NGC 6791 3026 RG* 19 21 06.2968991160 +37 44 59.662738896   15.842 14.48   13.18 ~ 54 0
77 2MASS J19210666+3743033 RG* 19 21 06.6563089704 +37 43 03.327592152           ~ 2 0
78 Gaia DR2 2051105788773379328 RG* 19 21 07.0526479008 +37 47 50.649547596           ~ 5 0
79 Gaia DR2 2051105788773378176 RG* 19 21 07.1073499416 +37 47 44.830182408           ~ 5 0
80 Gaia DR2 2051105101578554112 RG* 19 21 07.4460280800 +37 44 54.999469032           ~ 5 0
81 NGC 6791 3033 RG* 19 21 08.0704161851 +37 47 49.441898699   15.28 13.95     ~ 13 0
82 Cl* NGC 6791 SBG 12823 RG* 19 21 08.0716892616 +37 49 08.377815504   16.862 15.567     ~ 15 0
83 Cl* NGC 6791 SBG 12836 RG* 19 21 08.1159547944 +37 45 32.157611316   16.771 15.428   14.082 ~ 19 0
84 [TGM2014] 27007 RG* 19 21 09.4446426960 +37 45 11.305371384           ~ 6 0
85 Cl* NGC 6791 SBG 13260 RG* 19 21 10.0694786424 +37 50 00.860243460           ~ 39 0
86 2MASS J19211164+3750483 RG* 19 21 11.6445821928 +37 50 48.325658100           ~ 11 0
87 UCAC4 640-067096 RG* 19 21 11.7614089565 +37 52 45.987880400   15.714 14.393 14.062   ~ 8 0
88 Cl* NGC 6791 SBG 13847 RG* 19 21 13.0026379512 +37 43 00.518637792   16.694 15.322   13.957 ~ 43 0
89 NGC 6791 14140 RG* 19 21 14.6997327792 +37 53 07.547099640   15.898 14.747 14.588   ~ 5 0
90 Cl* NGC 6791 SBG 1442 RG* 19 21 16.3252014168 +37 52 15.405972924     14.056     ~ 14 0
91 UCAC4 639-066105 RG* 19 21 17.5184699616 +37 47 25.629150408   16.593 15.393 14.973   ~ 10 0
92 Gaia DR2 2051104826700755584 RG* 19 21 24.2028278112 +37 46 18.216493716           ~ 5 0
93 [TGM2014] 33015 RG* 19 21 26.0858267424 +37 49 32.019411396           ~ 6 0
94 NGC 6811 OpC 19 37 21.8 +46 22 43   7.47 6.8     ~ 435 0
95 NGC 6819 27 RG* 19 40 36.8439134770 +40 15 17.244926338     14.130   12.96 ~ 50 0
96 UCAC4 652-075167 RG* 19 40 39.7166683872 +40 13 52.277550024     14.06 13.761 12.72 K1IV 9 0
97 NGC 6819 112 RG* 19 40 49.6541452533 +40 14 31.281979204     13.370   12.09 G5III 53 0
98 2MASS J19405020+4013109 RG* 19 40 50.2024013187 +40 13 10.917132030     13.11   11.85 ~ 57 0
99 NGC 6819 22 RG* 19 40 51.9766183248 +40 15 36.166342284     15.38   14.02 ~ 6 0
100 NGC 6819 138 RG* 19 40 56.0080076374 +40 13 39.553372067     14.080   12.90 K1IV 64 0
101 UCAC4 652-075325 RG* 19 40 57.8465387040 +40 13 53.065970400   14.085 12.981 12.677 11.67 ~ 15 0
102 2MASS J19405797+4008174 RG* 19 40 57.9664499956 +40 08 17.447974622     12.94   11.66 ~ 55 0
103 2MASS J19410201+4008405 RG* 19 41 02.0061236448 +40 08 40.501400568     14.67   13.31 ~ 2 0
104 2MASS J19410203+4006280 RG* 19 41 02.0306253120 +40 06 28.076689656     13.13   11.88 ~ 38 0
105 2MASS J19410422+4009560 RG* 19 41 04.2242516712 +40 09 56.061821124     13.98   12.73 ~ 2 0
106 UCAC4 651-075621 RG* 19 41 04.5823305552 +40 04 50.806477056   14.674 13.55 13.217 12.23 ~ 13 0
107 UCAC4 652-075381 RG* 19 41 04.6862578776 +40 14 51.390161880   13.453 12.511 12.240 11.23 ~ 18 0
108 Cl* NGC 6819 P 31 RG* 19 41 08.1952979208 +40 15 08.552337948   14.44 13.31   12.15 G6V 44 0
109 2MASS J19410827+4010381 RG* 19 41 08.2719751992 +40 10 38.115597180     13.73   12.33 ~ 2 0
110 Cl* NGC 6819 P 27 RG* 19 41 08.5886081903 +40 13 29.915883413   14.31 13.11   11.83 ~ 56 0
111 Cl* NGC 6819 P 29 RG* 19 41 09.2637488472 +40 14 43.632249936   14.40 13.14   11.85 ~ 55 0
112 NGC 6819 983 RG* 19 41 09.9100335000 +40 15 49.525282728   14.20 12.93   11.65 ~ 54 0
113 NGC 6819 227 RG* 19 41 10.0489825704 +40 13 08.303577384   14.696 13.998 14.035 13.04 ~ 16 0
114 2MASS J19411047+4008451 RG* 19 41 10.4714894280 +40 08 45.107162664     14.36   13.08 ~ 2 0
115 KOI-6494 RG* 19 41 11.0264553173 +40 11 11.674109278   12.78 11.63   10.51 G6V 40 0
116 2MASS J19411162+4005243 RG* 19 41 11.6198157936 +40 05 24.387492588     14.00   12.68 ~ 2 0
117 NGC 6819 425 RG* 19 41 12.2411468160 +40 11 33.884441484     13.280   11.97 ~ 28 0
118 UCAC4 652-075477 RG* 19 41 12.7911483480 +40 12 23.914131372   13.370 12.436 12.914 11.86 ~ 47 0
119 NGC 6819 424 RG* 19 41 12.8159953752 +40 11 29.395787928     13.900   12.68 ~ 24 0
120 UCAC4 651-075752 RG* 19 41 13.1784760992 +40 06 41.784728976     13.44 13.193 12.23 ~ 28 0
121 NGC 6819 398 RG* 19 41 13.4497701480 +40 11 56.134988700   14.003 12.999 12.851 11.85 ~ 41 0
122 NGC 6819 333 RG* 19 41 13.5487948872 +40 12 20.541915036   14.245 13.04   11.80 ~ 58 1
123 NGC 6819 978 RG* 19 41 14.7616420032 +40 11 00.796691832   13.82 12.86   11.60 ~ 41 0
124 NGC 6819 616 RG* 19 41 15.6410633736 +40 10 10.544991672   14.17 13.24   11.94 ~ 41 0
125 NGC 6819 979 RG* 19 41 15.9287695800 +40 11 11.462903988   13.79 12.95   11.81 ~ 49 0
126 NGC 6819 550 RG* 19 41 17.0521593408 +40 10 51.852693756   12.524 11.125 11.243 9.92 ~ 40 0
127 KOI-5116 RG* 19 41 17.7597575577 +40 09 15.859525768     12.83   11.60 G9III 50 0
128 NGC 6819 OpC 19 41 18.3 +40 11 19   8.21 7.3     ~ 719 0
129 Cl* NGC 6819 P 14 RG* 19 41 18.7029158928 +40 11 42.974783808   13.23 12.16 12.21 11.28 ~ 6 0
130 NGC 6819 395 RG* 19 41 18.7601297064 +40 11 54.749608539   14.82 13.64 13.393 12.43 ~ 26 0
131 UCAC3 261-166340 RG* 19 41 18.9247568640 +40 11 40.989183216     13.38 13.16 12.07 ~ 26 0
132 NGC 6819 391 RG* 19 41 21.3348633240 +40 11 57.226245540   14.12 13.01   11.76 ~ 25 0
133 NGC 6819 472 RG* 19 41 21.3616104480 +40 11 00.221213472     13.120   11.79 ~ 40 0
134 Cl* NGC 6819 P 28 RG* 19 41 21.4748707569 +40 13 57.324959648   14.29 13.07   11.77 K1IV 61 0
135 NGC 6819 389 RG* 19 41 21.7633631736 +40 12 11.168954028     13.190   11.87 ~ 42 0
136 2MASS J19412187+4011485 RG* 19 41 21.8710800480 +40 11 48.590725092     12.83   11.60 ~ 23 0
137 2MASS J19412222+4016442 RG* 19 41 22.2248500176 +40 16 44.214161520     13.280   11.89 ~ 52 0
138 2MASS J19412386+4021444 RG* 19 41 23.8585012663 +40 21 44.472594000     13.00   11.72 ~ 49 0
139 NGC 6819 975 RG* 19 41 26.5876718159 +40 11 41.781064648   13.59 12.22   10.72 K1IV 46 0
140 2MASS J19412692+4019120 RG* 19 41 26.9163730704 +40 19 12.025353180     14.22   13.03 ~ 2 0
141 Cl* NGC 6819 P 17 RG* 19 41 27.0761609688 +40 12 28.325639880   13.88 12.63   11.25 ~ 53 0
142 Cl* NGC 6819 P 25 RG* 19 41 29.1453700745 +40 13 04.090576666   14.15 13.11   11.84 ~ 52 0
143 NGC 6819 178 RG* 19 41 29.4199026024 +40 14 19.955558616     13.220   11.89 ~ 44 0
144 Cl* NGC 6819 P 24 RG* 19 41 29.5366520118 +40 12 20.975296318   14.20 13.08   11.77 K1.5III 62 0
145 2MASS J19413027+4015218 RG* 19 41 30.2734467292 +40 15 21.644308992     12.99   11.73 K2III 58 0
146 Cl* NGC 6819 P 30 RG* 19 41 33.3070583268 +40 12 34.864776176   14.53 13.18   11.84 K1IV 57 0
147 2MASS J19413423+4019450 RG* 19 41 34.2337372224 +40 19 44.994648504     13.50   12.20 ~ 2 0
148 NGC 6819 715 RG* 19 41 34.4434617705 +40 08 46.082274264   14.35 13.15   11.92 K1III 38 0
149 2MASS J19413489+4019395 RG* 19 41 34.8894684480 +40 19 39.593957700     13.49   12.12 ~ 3 0
150 UCAC4 651-076115 RG* 19 41 36.8315200776 +40 09 03.040678620   14.367 13.287 12.905 11.91 ~ 28 0
151 Cl* NGC 6819 P 33 RG* 19 41 40.9098088968 +40 11 12.164850780   14.90 13.49   12.01 ~ 12 0
152 2MASS J19414514+4009501 RG* 19 41 45.1497753168 +40 09 50.059230264     15.13   13.74 ~ 3 0
153 2MASS J19414722+4015568 RG* 19 41 47.2272737304 +40 15 56.818031904     14.90   13.49 ~ 2 0
154 NGC 6866 OpC 20 03 57.7 +44 10 22   8.04 7.6     ~ 185 0

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