2019A&A...624A..44S

Query : 2019A&A...624A..44S

2019A&A...624A..44S - Astronomy and Astrophysics, volume 624A44-44 (2019/4-1)

Be and O in the ultra metal-poor dwarf 2MASS J18082002-5104378: the Be-O correlation.

SPITE M., BONIFACIO P., SPITE F., CAFFAU E., SBORDONE L. and GALLAGHER A.J.

Abstract (from CDS):


Context. Measurable amounts of Be could have been synthesised primordially if the Universe were non-homogeneous or in the presence of late decaying relic particles.
Aims. We investigate the Be abundance in the extremely metal-poor star 2MASS J1808-5104 ([Fe/H]=-3.84) with the aim of constraining inhomogeneities or the presence of late decaying particles.
Methods. High resolution, high signal-to-noise ratio (S/N) UV spectra were acquired at ESO with the Kueyen 8.2m telescope and the UVES spectrograph. Abundances were derived using several model atmospheres and spectral synthesis code.
Results. We measured log(Be/H)=-14.3 from a spectrum synthesis of the region of the Be line. Using a conservative approach, however we adopted an upper limit two times higher, i.e. log(Be/H)←14.0. We measured the O abundance from UV-OH lines and find [O/H]=-3.46 after a 3D correction.
Conclusions. Our observation reinforces the existing upper limit on primordial Be. There is no observational indication for a primordial production of 9Be. This places strong constraints on the properties of putative relic particles. This result also supports the hypothesis of a homogeneous Universe, at the time of nucleosynthesis. Surprisingly, our upper limit of the Be abundance is well below the Be measurements in stars of similar [O/H]. This may be evidence that the Be-O relation breaks down in the early Galaxy, perhaps due to the escape of spallation products from the gas clouds in which stars such as 2MASS J1808-5104 have formed.

Abstract Copyright: © M. Spite et al. 2019

Journal keyword(s): stars: abundances - binaries: spectroscopic - stars: Population II - stars: individual: 2MASS J18082002-5104378

VizieR on-line data: <Available at CDS (J/A+A/624/A44): oxy.dat>

Simbad objects: 119

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Number of rows : 119
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 G 130-65 PM* 00 22 38.5912325352 +23 54 31.309930764   12.06   11.5   sdF8: 40 0
2 BD+04 302 PM* 01 43 31.7383481219 +04 51 30.657915686   10.92   10.1   sdF5 26 0
3 BD+02 263 SB* 01 45 13.8136519529 +03 30 49.246559542   11.14 10.61 10.54   sdF6 34 0
4 BD-10 388 Pe* 01 50 32.6462570064 -09 21 02.840259744   10.78 10.4     F3 102 0
5 BD+29 366 PM* 02 10 24.5274364299 +29 48 23.663397433 9.27 9.35 8.77 8.24 7.85 G3 146 0
6 BD-01 306 PM* 02 14 40.2989460555 -01 12 05.123909214 9.60 9.631 9.066 8.712 8.377 G0 162 0
7 BD+44 493 Pe* 02 26 49.7390353632 +44 57 46.523771136   9.63 9.11 9.073   CEMP-no 116 0
8 BD-09 466 Pe* 02 28 34.2466159673 -09 00 09.620472609   11.83 11.68     ~ 15 0
9 BD-17 484 PM* 02 31 25.7656327453 -16 59 05.044365275   10.890 10.470 10.159 9.871 F0Vwl 74 0
10 HD 16031 PM* 02 34 11.0485653360 -12 23 03.444110700 9.99 10.21 9.77     F0V 179 1
11 LP 651-4 PM* 02 44 11.7179917488 -05 27 00.003085992   12.35 11.97     ~ 27 0
12 G 4-37 Pe* 02 44 35.0876406984 +08 28 50.094009408   11.90 11.4 11.0   F7 96 0
13 BD+22 396 PM* 02 48 37.4276707386 +22 35 54.368718096   10.68   9.9   G4 46 0
14 G 75-56 Pe* 03 00 23.0286652283 -05 57 49.691602691   12.397 11.950 11.627 11.296 ~ 39 0
15 HD 19445 Pe* 03 08 25.5883873084 +26 19 51.400965175 8.29 8.52 8.06 7.60 7.27 G2VFe-3 801 0
16 G 5-19 PM* 03 11 26.5406862511 +12 37 09.570643728   11.77   11.0   ~ 54 0
17 Ross 570 PM* 03 18 28.9186801755 -07 08 25.552772959   11.647 11.222 10.918 10.618 A6: 56 0
18 CD-24 1656 PM* 03 26 54.3810433800 -23 43 55.091405784   11.34 10.91     ~ 17 0
19 HD 24289 Pe* 03 51 54.5431655808 -03 49 10.687742472   10.48 10.0     F0V 75 0
20 SN 1997D SN* 04 11 01.00 -56 29 56.0       16.3   SNIIpec 184 1
21 HD 284248 Pe* 04 14 35.5161858536 +22 21 04.252516252 9.49 9.68 9.23 8.77 8.43 sdG0 200 0
22 HD 30743 PM* 04 49 42.2441132544 -13 46 10.807837356   6.70 6.26     F6VFe-0.9CH-0.5 144 0
23 HD 31128 PM* 04 52 09.9097086888 -27 03 50.940147636   9.55 9.14     F3/5Vw 149 0
24 BD+03 740 HB* 05 01 16.6226363256 +04 06 37.021736844 9.97 10.17 9.7 9.6   sdF0 182 0
25 HD 241253 PM* 05 09 56.9589768600 +05 33 26.741302308   10.24   9.4   G0 104 0
26 HD 247168 * 05 44 53.9447153040 +09 16 57.498366036   10.67 10.35     G0 11 0
27 HD 247297 PM* 05 45 40.3823732400 +14 41 20.113355472       8.7   G0 43 0
28 Ross 797 PM* 05 53 58.8112225702 -14 22 53.261509300   12.020 11.496 11.132 10.797 F9 38 0
29 BD+58 876 ** 05 57 28.5835812552 +58 40 48.672748704       10.2   F8 38 0
30 HD 250792 Pe* 06 03 14.8636143602 +19 21 38.696218609 9.89 9.898 9.310 8.954 8.547 G1 177 0
31 BD+37 1458 Pe* 06 16 01.5222885381 +37 43 18.754343426 9.41 9.52 8.92 8.34 7.91 G0 146 0
32 G 192-43 PM* 06 47 44.9352596626 +58 38 34.532968179   10.75   10.1   F2 74 0
33 G 108-58 SB* 07 10 02.5912948776 -01 17 58.498391400   12.295 11.852 11.516 11.184 ~ 24 1
34 G 88-10 SB* 07 10 23.7929838816 +24 20 40.198088508   12.30 11.8 11.7   ~ 59 0
35 G 90-3 Pe* 07 29 50.8459373520 +32 51 58.309757856   11.0 10.4 10.2   sd:F8 81 0
36 BD+24 1676 Pe* 07 30 41.2662525096 +24 05 10.248524088   11.15 10.7 10.4   F 139 0
37 Ross 390 PM* 07 34 52.9593329780 -10 23 10.075480635   11.746 11.100 10.701 10.325 G5 63 0
38 HD 64090 Pe* 07 53 33.1208795337 +30 36 18.256204963 8.75 8.86 8.25 7.70 7.30 K0:V_Fe-3 374 0
39 G 113-9 PM* 08 00 50.4192216993 -04 05 32.110102534   11.573 10.980 10.689 10.418 ~ 18 0
40 BD+20 2030 SB* 08 16 07.3522203887 +19 41 51.430977726   11.556 11.189 10.909 10.632 sdF0 60 0
41 BD+00 2245 PM* 08 16 57.7754525760 +00 01 03.593436636   10.36 9.76 9.55   G0 41 0
42 HD 233511 PM* 08 19 22.5714563279 +54 05 09.623339988 10.02 10.24   9.4   F4 149 0
43 HD 74000 Pe* 08 40 50.8036114756 -16 20 42.516208237 9.84 10.09 9.66     F2 279 0
44 BD+39 2173 PM* 08 55 59.3399424912 +38 39 44.887433184       10.8   ~ 18 0
45 HD 76932 PM* 08 58 43.9327642391 -16 07 57.817644364 6.47 6.39 5.86     G2VFe-1.8CH-1 426 0
46 BD-03 2525 SB* 08 59 10.1118302427 -04 01 36.525356927   10.114 9.648 9.335 9.005 F3 139 0
47 G 115-49 PM* 09 05 16.6832426214 +38 47 54.594836831   12.10   11.2   F7 58 0
48 BD+09 2190 Pe* 09 29 15.5615542183 +08 38 00.467004388   11.54   10.8   sdA5 144 0
49 Ross 889 Pe* 09 40 43.2053340378 +01 00 29.511836741       10.39   sdA4 166 0
50 HD 84937 Pe* 09 48 56.0992891997 +13 44 39.326709913 8.49 8.68 8.32 7.97 7.70 F8Vm-5 831 0
51 BD+44 1910 PM* 09 49 30.6346611456 +44 17 19.224450204   11.5   10.6   A5s 59 0
52 HD 94028 PM* 10 51 28.1256073369 +20 16 38.965439278 8.51 8.69 8.22 7.82 7.54 F8 375 0
53 BD+36 2165 PM* 11 12 47.9997679646 +35 43 43.885058670 9.98 10.19 9.76 9.34 9.02 G0 143 0
54 BD+51 1696 Pe* 11 46 35.1556060454 +50 52 54.680145444 10.32 10.47   9.5   sdG0 172 0
55 BD-13 3442 Pe* 11 46 50.6525751264 -14 06 43.458063768   10.662 10.274     CEMP 117 0
56 LP 553-62 Pe* 11 54 25.6303452792 +02 57 47.422732248     11.7 11.6   ~ 23 0
57 HD 104056 PM* 11 59 03.0837574344 -04 46 38.938845000   9.58 9.01     G3V 62 0
58 BD-04 3208 PM* 12 07 15.0721580835 -05 44 01.612773628   10.40 9.99     A7 154 0
59 Ross 453 Pe* 12 10 55.7733238889 +00 23 54.332076195   11.53   10.9   F2 115 0
60 HD 106038 PM* 12 12 01.3688687080 +13 15 40.618559661 10.45 10.630 10.162 9.851 9.539 F6wl 204 0
61 HD 108177 PM* 12 25 34.9568267745 +01 17 02.259553591 9.87 10.09 9.66 9.21 8.89 F0V 266 0
62 HD 109303 PM* 12 33 19.0294913328 +49 18 06.827723352   8.65 8.15     F8 61 0
63 Wolf 1447 Pe* 12 34 25.1299405728 +15 16 48.959531004   12.385 11.976 11.676 11.378 A6 73 0
64 BD+28 2137 SB* 12 36 39.4525105848 +27 28 28.155760104   11.29   10.4   sdF2 97 0
65 HE 1327-2326 Pe* 13 30 05.9394958608 -23 41 49.699340844 13.761 14.01 13.55 13.50 12.803 CEMP-no 258 0
66 HD 118244 SB* 13 35 11.4187437774 +22 29 59.220107709   7.34   6.7   F5V 82 0
67 BD+13 2698 ** 13 39 59.57275 +12 35 21.6837   9.914 9.384 9.355   F9V 88 0
68 Wolf 1492 Pe* 13 40 02.4921849768 -00 02 18.750053436 11.601 11.832 11.451 11.184 10.892 sdF0: 299 0
69 BD+34 2476 PM* 13 59 09.4837849799 +33 51 39.379962282 10.25 10.44   9.7   sdF5 167 0
70 Ross 841 Pe* 14 02 30.0900761861 -05 39 05.181979951   11.508 11.149 10.866 10.576 sdA3 161 0
71 G 201-5 PM* 14 36 08.3666970497 +55 33 04.605415573   11.93   11.1   sdF6 45 0
72 BD+26 2621 Pe* 14 54 10.7123241110 +25 33 48.927279437   11.40 10.9 10.7   F0 52 0
73 HD 132475 PM* 14 59 49.7651173448 -22 00 45.815162806 8.98 9.11 8.55     F5/6V 256 1
74 HD 134169 SB* 15 08 18.0570477216 +03 55 50.144061360 8.14 8.22 7.70     F7V 220 0
75 HD 140283 Pe* 15 43 03.0971190219 -10 56 00.595693188 7.508 7.711 7.212 6.63 8.21 F9VkA5mA1 985 0
76 BD-06 4346 PM* 16 03 00.1729918176 -06 27 11.168430264   10.93 10.18     ~ 33 0
77 BD+42 2667 Pe* 16 03 13.2988107325 +42 14 46.651500150   10.33   9.6   F5 159 0
78 Wolf 644 Pe* 17 07 06.2796593784 +34 21 34.548890508   12.44 12.0 12.07   ~ 28 0
79 BD+02 3375 Pe* 17 39 45.5948675731 +02 24 59.606824535 10.18 10.40 9.92 9.47 9.12 A5 205 0
80 BD-08 4501 PM* 17 47 27.9712915686 -08 46 47.733112329   11.18 10.59     sdF8 140 0
81 HD 161770 PM* 17 47 46.0757369400 -09 36 18.442563336 10.38 10.39 9.71 9.04 8.55 F3V 103 0
82 BD+36 2964 Pe* 17 52 18.0525471888 +36 24 06.619879188     10.3 10.2   sd:F8 42 0
83 BD+20 3603 Pe* 17 54 43.2306198848 +20 16 16.444611703   10.13 9.8 9.6   F0 169 0
84 BD+01 3597 Pe* 18 07 56.5963171590 +01 52 32.701833212   11.53 11.1 10.8   sdF5 69 0
85 UCAC4 195-177220 SB* 18 08 20.0315466960 -51 04 37.883300340   12.546 11.930 11.898   CEMP 29 0
86 BD+13 3683 SB* 18 33 16.8450962112 +13 09 25.493753160   11.19 10.5 10.0   F5 112 0
87 Ross 711 SB* 18 35 19.1686289616 +28 41 55.415394492   11.83 11.4 11.2   A8 101 0
88 G 21-22 PM* 18 39 09.7158608590 +00 07 14.320687061   11.285 10.775 10.437 10.086 G4 71 0
89 HD 179626 PM* 19 13 20.7189797919 -00 35 42.325251766   9.701 9.187 8.844 8.489 F5V 136 0
90 LP 752-17 Pe* 19 25 25.9284634800 -11 56 57.953973768   12.27 11.81     ~ 15 0
91 Ross 656 Pe* 19 29 44.0336036976 +01 01 30.199383300   12.35 11.7 11.4   A8s: 45 0
92 HD 338529 PM* 19 32 31.9104668184 +26 23 26.117367216   9.72   9.2   B5 213 0
93 HD 184499 PM* 19 33 27.0808591023 +33 12 06.719255906 7.22 7.22 6.64 6.14 5.79 G0V 256 0
94 HD 188510 PM* 19 55 09.6782304000 +10 44 27.398607828 9.30 9.41   8.5   G5V: 264 0
95 G 24-3 Pe* 20 05 44.3170407024 +04 02 52.812418452   10.92   10.2   sdF8 104 0
96 BD+42 3607 Pe* 20 09 01.4132638739 +42 51 54.930960323     10.1 9.9   F3 90 0
97 HD 345957 PM* 20 10 48.1625876064 +23 57 54.510596568   9.36   8.6   G0V: 150 0
98 HD 194598 PM* 20 26 11.9183775668 +09 27 00.429558608 8.62 8.82 8.34 7.90 7.56 F8 315 0
99 LP 635-14 Pe* 20 26 46.8302881512 -00 37 15.175129512 11.57 11.76 11.33     OB- 45 0
100 HD 195633 PM* 20 32 23.9917043856 +06 31 03.255667608 9.05 9.03 8.52     G0Vw 155 0
101 LP 815-43 Pe* 20 38 13.2998605176 -20 26 10.850795808   11.31 10.72     ~ 82 0
102 G 24-25 SB* 20 40 16.1053839864 +00 33 19.651652964       10.2   CEMP-s 57 0
103 BD-14 5850 PM* 20 47 34.3988019289 -14 25 33.668099282   11.39 11.00     F5V 38 0
104 BD+04 4551 PM* 20 48 50.7247431816 +05 11 58.817679324   10.13 9.67 9.61   F7Vw 81 0
105 HD 200580 SB* 21 04 07.3930420137 +02 59 40.129822016 7.82 7.85   7.0   F9V 174 0
106 HD 201891 Pe* 21 11 59.0321495469 +17 43 39.890919730 7.74 7.88 7.37 6.91 6.59 G5V_Fe-2.5 409 0
107 HD 201889 ** 21 11 59.52350 +24 10 05.3897 8.60 8.64 8.05 7.52 7.15 G1V 163 0
108 G 26-12 Pe* 21 33 36.5718002352 +00 23 43.912696200   12.59 12.15 11.9   sdF5: 54 0
109 BD+26 4251 PM* 21 43 57.1238515464 +27 23 23.989925868       9.9   F6 100 0
110 BD+19 4788 PM* 21 48 19.2876425352 +19 58 30.634725936       9.6   ~ 39 0
111 HD 208906 PM* 21 58 40.8320586106 +29 48 45.462564846 7.35 7.47 6.96 6.53 6.22 G0VmF2 182 0
112 G 126-52 PM* 22 04 13.3810303392 +19 32 54.335372892       10.7   sd:F2 41 0
113 BD+17 4708 SB* 22 11 31.3756832854 +18 05 34.177983548 9.73 9.91 9.46 9.03 8.70 sdF8 580 0
114 BD+07 4841 PM* 22 18 36.5059714907 +08 26 44.962089682   10.84   10.1   G0 127 0
115 CD-24 17504 Pe* 23 07 20.2534619736 -23 52 35.954286096   12.51 12.18     CEMP-no 94 0
116 HD 218502 PM* 23 08 39.3724933569 -15 03 11.944919751   8.65 8.25     F(3)w 109 0
117 HD 219617 ** 23 17 05.04375 -13 51 03.5971 8.41 8.60 8.14 7.70 7.37 F8 317 0
118 BD+02 4651 PM* 23 19 40.4500387773 +03 22 16.694733495   10.67   9.9   sdF6 117 0
119 BD+59 2723 SB* 23 26 32.8574602006 +60 37 42.846968726 10.74 10.92   10.1   sdF8 111 0

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