2021MNRAS.505.1280B

Query : 2021MNRAS.505.1280B

2021MNRAS.505.1280B - Mon. Not. R. Astron. Soc., 505, 1280-1292 (2021/July-3)

The Gaia-ESO survey: a lithium depletion boundary age for NGC 2232.

BINKS A.S., JEFFRIES R.D., JACKSON R.J., FRANCIOSINI E., SACCO G.G., BAYO A., MAGRINI L., RANDICH S., ARANCIBIA-SILVA J., BERGEMANN M., BRAGAGLIA A., GILMORE G., GONNEAU A., HOURIHANE A., JOFRE P., KORN A.J., MORBIDELLI L., PRISINZANO L., WORLEY C.C. and ZAGGIA S.

Abstract (from CDS):

Astrometry and photometry from Gaia and spectroscopic data from the Gaia-ESO Survey (GES) are used to identify the lithium depletion boundary (LDB) in the young cluster NGC 2232. A specialized spectral line analysis procedure was used to recover the signature of undepleted lithium in very low luminosity cluster members. An age of 38 ± 3 Myr is inferred by comparing the LDB location in absolute colour-magnitude diagrams (CMDs) with the predictions of standard models. This is more than twice the age derived from fitting isochrones to low-mass stars in the CMD with the same models. Much closer agreement between LDB and CMD ages is obtained from models that incorporate magnetically suppressed convection or flux-blocking by dark, magnetic starspots. The best agreement is found at ages of 45-50 Myr for models with high levels of magnetic activity and starspot coverage fractions >50 per cent, although a uniformly high spot coverage does not match the CMD well across the full luminosity range considered.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): stars: kinematics and dynamics - stars: late-type - stars: pre-main-sequence - solar neighbourhood

Simbad objects: 89

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Number of rows : 89
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 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
2 GES J06244412-0442576 Y*? 06 24 44.1168695496 -04 42 57.486922164           ~ 12 0
3 TYC 4793-1490-1 Y*? 06 25 03.5745818256 -04 56 19.433889024   12.50 11.92     ~ 21 0
4 UCAC4 427-015405 Y*? 06 25 19.3268524392 -04 42 04.711581252   13.363 12.593 12.245   ~ 20 0
5 CVSO 2000 TT* 06 25 35.2148183445 -04 46 19.503169187   17.265 15.770 15.510   M0e 10 0
6 GES J06254811-0431088 Y*? 06 25 48.1059407640 -04 31 08.880842784           ~ 19 0
7 ATO J096.4556-04.8168 BY* 06 25 49.3546851696 -04 49 00.581790504           ~ 22 0
8 GES J06254974-0429071 Y*? 06 25 49.7393237616 -04 29 07.155208572           ~ 17 0
9 GES J06255361-0452586 Y*? 06 25 53.6091260616 -04 52 58.580440356           ~ 14 0
10 GES J06260163-0452139 Y*? 06 26 01.6333475112 -04 52 13.945771128           ~ 18 0
11 GES J06260807-0437497 Y*? 06 26 08.0742848088 -04 37 49.701249588           ~ 18 0
12 GES J06261538-0431321 Y*? 06 26 15.3787958736 -04 31 32.080622268           ~ 18 0
13 GES J06261605-0417322 Y*? 06 26 16.0461228144 -04 17 32.276952636           ~ 19 0
14 GES J06261812-0434330 Y*? 06 26 18.1175430505 -04 34 33.048913643           ~ 8 0
15 Cl* NGC 2232 CPK 18560 Y*? 06 26 18.3165670656 -04 35 57.497149248           M3.2 20 0
16 ZTF J062623.48-041610.6 BY* 06 26 23.4987022930 -04 16 10.623547492   16.461 15.123 14.407   ~ 21 0
17 UCAC4 428-016267 Y*? 06 26 27.7699620288 -04 33 21.763414332   12.887 12.220 12.160   G1V 22 0
18 Cl* NGC 2232 CPK 18626 Y*? 06 26 28.4458855800 -04 26 52.792976400           ~ 21 0
19 UCAC4 427-015648 Y*? 06 26 28.6563505176 -04 37 36.721946568   13.168 12.495 12.377   ~ 10 0
20 GES J06262870-0438129 Y*? 06 26 28.6966493448 -04 38 12.904625436           ~ 18 0
21 GES J06265061-0430160 Y*? 06 26 50.6089582920 -04 30 16.076018340           ~ 12 0
22 GES J06265068-0448557 * 06 26 50.6701912835 -04 48 55.595149883           ~ 11 0
23 Cl* NGC 2232 CPK 18627 Y*? 06 26 51.2556746520 -04 21 23.307164604           ~ 20 0
24 GES J06265196-0454284 * 06 26 51.9593454483 -04 54 28.342814803           ~ 7 0
25 GES J06265381-0459443 Y*? 06 26 53.8138588488 -04 59 44.230288776           ~ 16 0
26 GES J06270467-0442388 Y*? 06 27 04.6587039696 -04 42 38.863150596           ~ 10 0
27 GES J06271101-0452427 Y*? 06 27 11.0062499328 -04 52 42.672063684           ~ 20 0
28 GES J06271482-0453480 Y*? 06 27 14.8248919176 -04 53 47.975101188           ~ 11 0
29 GES J06271976-0456495 Y*? 06 27 19.7557592484 -04 56 49.516201895           ~ 10 0
30 Cl* NGC 2232 CPK 6175 Y*? 06 27 22.9845371664 -04 53 40.729268220           ~ 20 0
31 Cl* NGC 2232 CPK 6345 Y*? 06 27 25.1359564296 -05 02 38.660091072           ~ 19 0
32 Cl* NGC 2232 CPK 6540 Y*? 06 27 27.4262175552 -04 52 09.660771444           ~ 20 0
33 GES J06272896-0456324 * 06 27 28.9535252112 -04 56 32.340614064           ~ 8 0
34 GES J06273147-0455189 * 06 27 31.4650140702 -04 55 18.955588699           ~ 4 0
35 Cl* NGC 2232 CPK 18599 Y*? 06 27 36.2271248760 -04 56 34.065059712           M3.5 22 0
36 Cl* NGC 2232 CPK 18621 Y*? 06 27 40.2505255200 -04 42 45.761493132     18.077     M3.7 20 0
37 NGC 2232 OpC 06 27 45.6 -04 44 26           ~ 212 0
38 Cl* NGC 2232 CPK 18588 Y*? 06 27 46.0188137712 -04 46 22.359310068   12.75 12.13     ~ 24 0
39 GES J06274651-0434347 * 06 27 46.5087012292 -04 34 34.643756119           ~ 8 0
40 Cl* NGC 2232 CPK 18585 Y*? 06 27 47.7378298992 -04 40 33.179355804   13.20 12.49     G2V 23 0
41 GES J06274906-0516134 * 06 27 49.0628494669 -05 16 13.051927111           ~ 7 0
42 GES J06275148-0446366 * 06 27 51.4847451384 -04 46 36.563063376           ~ 10 0
43 GES J06275354-0448166 Y*? 06 27 53.5345078200 -04 48 16.489459728           ~ 10 0
44 GES J06275451-0449108 Y*? 06 27 54.5158530048 -04 49 10.839553752           ~ 13 0
45 GES J06275935-0434279 Y*? 06 27 59.3494527120 -04 34 27.979732236           ~ 19 0
46 Cl* NGC 2232 CPK 18580 Y*? 06 28 00.0867643200 -04 47 34.675832472     17.514     M2.9 18 0
47 Cl* NGC 2232 CPK 9220 Y*? 06 28 01.0171006824 -04 49 09.017664636     18.551     ~ 20 0
48 Cl* NGC 2232 CPK 18615 BY* 06 28 04.8967087584 -04 51 13.932336996     16.145     ~ 21 0
49 Cl* NGC 2232 CPK 18611 Y*? 06 28 05.5368164112 -04 40 58.178867988     16.532     ~ 20 0
50 Cl* NGC 2232 CPK 18622 Y*? 06 28 05.6130469680 -04 38 27.910428432     17.663     M3.4 16 0
51 Cl* NGC 2232 CPK 18612 * 06 28 06.0048260472 -04 36 20.691836424           M2.4 16 0
52 Cl* NGC 2232 CPK 9688 Y*? 06 28 06.7722085848 -04 45 45.384810120     16.823     ~ 20 0
53 Cl* NGC 2232 CPK 18620 Y*? 06 28 08.4912285120 -04 44 24.005908896     17.431     M2.2 21 0
54 Cl* NGC 2232 CPK 18617 Y*? 06 28 09.5707036584 -04 47 54.257863056     16.728     M2.0 21 0
55 Cl* NGC 2232 CPK 18586 Y*? 06 28 10.7728509384 -04 32 42.490292352           ~ 20 0
56 Cl* NGC 2232 CPK 18607 Y*? 06 28 12.3493687128 -04 45 42.274382184     18.324     M3.9 19 0
57 GES J06281258-0429598 Y*? 06 28 12.5806171368 -04 29 59.748116568           ~ 19 0
58 GES J06281691-0415435 * 06 28 16.9100311789 -04 15 43.530928647           ~ 8 0
59 Cl* NGC 2232 CPK 10559 EB* 06 28 17.5916861064 -05 04 04.536628068           ~ 21 0
60 GES J06281764-0459198 Y*? 06 28 17.6466480720 -04 59 19.914235224           ~ 19 0
61 GES J06281771-0517367 Y*? 06 28 17.7209275512 -05 17 36.625444800           ~ 11 0
62 Cl* NGC 2232 CPK 10588 Y*? 06 28 17.9858117808 -05 05 26.455992036           ~ 16 0
63 Cl* NGC 2232 CPK 18564 Y*? 06 28 18.8307259464 -04 50 57.801062940     15.472     ~ 22 0
64 GES J06281969-0444404 Y*? 06 28 19.6975512000 -04 44 40.404472332           ~ 15 0
65 GES J06282230-0444216 * 06 28 22.2940080564 -04 44 21.515698175           ~ 4 0
66 GES J06282894-0445238 * 06 28 28.9413479049 -04 45 23.812177331           ~ 8 0
67 Cl* NGC 2232 CPK 18605 * 06 28 33.6963934896 -04 46 58.310580396           G2V 19 0
68 GES J06283406-0416445 Y*? 06 28 34.0659833640 -04 16 44.495510268           ~ 17 0
69 2MASS J06283761-0456147 Y*? 06 28 37.6188369207 -04 56 14.805994781           ~ 18 0
70 2MASS J06284355-0414514 Y*? 06 28 43.5521536584 -04 14 51.428793829           ~ 16 0
71 GES J06284398-0514192 Y*? 06 28 43.9833029880 -05 14 19.135811400           ~ 10 0
72 Cl* NGC 2232 CPK 18587 Y*? 06 28 44.9792476464 -04 42 49.821319404           M0.5 20 0
73 Cl* NGC 2232 CPK 13008 Y*? 06 28 47.1704187864 -05 13 40.001165940           ~ 20 0
74 Cl* NGC 2232 CPK 18571 Y*? 06 28 48.0597727728 -04 42 43.663052700           ~ 21 0
75 Cl* NGC 2232 CPK 13715 Y*? 06 28 55.4821532328 -04 55 20.757675540           ~ 21 0
76 Cl* NGC 2232 CPK 18589 Y*? 06 28 56.2943149749 -04 49 09.498950384           ~ 22 0
77 GES J06285934-0513342 Y*? 06 28 59.3346485520 -05 13 34.181587488           ~ 17 0
78 Cl* NGC 2232 CPK 16692 Y*? 06 29 30.4492577821 -04 41 23.560754476           ~ 24 0
79 GES J06293692-0447336 Y*? 06 29 36.9165443808 -04 47 33.577285380           ~ 18 0
80 GES J06294594-0447371 Y*? 06 29 45.9449603016 -04 47 37.104816984           ~ 17 0
81 GES J06301801-0447574 Y*? 06 30 18.0112931520 -04 47 57.390616680           ~ 10 0
82 GES J06304014-0444327 Y*? 06 30 40.1395878360 -04 44 32.551115388           ~ 10 0
83 NGC 2516 OpC 07 58 00.5 -60 46 36           ~ 793 0
84 NGC 2547 OpC 08 10 01.5 -49 12 08           ~ 445 0
85 V* TW Hya TT* 11 01 51.9053285064 -34 42 17.033218380   11.94 10.50 10.626 9.18 K6Ve 2144 1
86 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1266 1
87 TWA 3 ** 11 10 27.894072 -37 31 51.96612   13.53 12.05 11.61 9.29 M4Ve+M4Ve 218 0
88 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 894 0
89 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1

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