1998A&A...334..599G


Query : 1998A&A...334..599G

1998A&A...334..599G - Astronomy and Astrophysics, volume 334, 599-605 (1998/6-2)

Beryllium abundances in parent stars of extrasolar planets: 16 Cygni A & B and ρ1 Cancri.

GARCIA LOPEZ R.J. and PEREZ DE TAORO M.R.

Abstract (from CDS):

The 9BeII λ 3131 Å doublet has been observed in the solar-type stars 16 Cyg A & B and in the late G-type star ρ1 Cnc, to derive their beryllium abundances. 16 Cyg A & B show similar (solar) beryllium abundances while 16 Cyg B, which has been proposed to have a planetary companion of ∼2MJup, is known to be depleted in lithium by a factor larger than 6 with respect to 16 Cyg A. Differences in their rotational histories which could induce different rates of internal mixing of material, and the ingestion of a similar planet by 16 Cyg A are discussed as potential explanations. The existence of two other solar-type stars which are candidates to harbour planetary-mass companions and which show lithium and beryllium abundances close to those of 16 Cyg A, requires a more detailed inspection of the peculiarities of the 16 Cyg system. For ρ1 Cnc, which is the coolest known object candidate to harbour a planetary-mass companion (M > 0.85 MJup), we establish a precise upper limit for its beryllium abundance, showing a strong Be depletion which constrains the available mixing mechanisms. Observations of similar stars without companions are required to assess the potential effects of the planetary companion on the observed depletion. It has been recently claimed that ρ1 Cnc appears to be a subgiant. If this were the case, the observed strong Li and Be depletions could be explained by a dilution process taking place during its post-main sequence evolution.

Abstract Copyright:

Journal keyword(s): stars: individual: 16 Cyg A,B (* 16 Cyg A, * 16 Cyg B - stars: individual: rho1 Cnc - stars: abundances - stars: evolution - planetary systems

Simbad objects: 39

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Number of rows : 39
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 * 85 Peg SB* 00 02 10.3487193861 +27 04 54.599101714 6.47 6.42 5.75 5.16 4.73 G5VbFe-2 534 0
2 HD 225239 SB* 00 04 53.7246874433 +34 39 34.801234025 6.82 6.74 6.11 5.56 5.18 G3 178 0
3 * eta Cas PM* 00 49 06.2945942922 +57 48 54.638239716 4.04 4.02 3.44 2.94 2.58 F9V 619 0
4 * ups And PM* 01 36 47.8415443907 +41 24 19.651368029 4.70 4.64 4.10 3.64 3.35 F9V 918 1
5 HD 10307 SB* 01 41 47.1268541099 +42 36 48.221567818 5.69 5.58 4.96 4.43 4.10 G1V 483 0
6 HD 18499 PM* 02 57 51.0290045256 -18 26 08.631856932   11.22 10.64     G6V 10 0
7 HD 26756 PM* 04 14 25.6501896480 +14 37 30.115628868   9.125 8.419 8.039 7.682 G5V 194 0
8 V* V984 Tau BY* 04 16 33.4775734800 +21 54 26.882025156   9.944 9.125     ~ 158 0
9 V* V893 Tau BY* 04 18 57.9745736544 +19 54 24.124484232   9.345 8.597 8.192 7.829 G9V 135 0
10 HD 27771 PM* 04 23 32.3332833360 +14 40 13.721568600   9.963 9.097 8.631 8.222 G5 165 0
11 HD 30649 PM* 04 51 43.5748348116 +45 50 02.818509833 7.59 7.55 6.97 6.45 6.10 G2 221 0
12 * lam Aur PM* 05 19 08.4754499121 +40 05 56.585080940 5.46 5.33 4.71 4.18 3.86 G1.5IV-VFe-1 509 0
13 V* V1386 Ori PM* 06 06 40.4780487600 +15 32 31.578871020 8.016 7.565   6.2   K0V 156 0
14 * 9 Pup SB* 07 51 46.30295 -13 53 52.9169           G0V 237 0
15 HD 65583 PM* 08 00 32.1297283166 +29 12 44.475101673 7.89 7.71 7.00 6.40 5.98 K0V_Fe-1.3 303 0
16 * rho01 Cnc PM* 08 52 35.8111044043 +28 19 50.954994470 7.45 6.82   5.4   K0IV-V 1037 1
17 * rho01 Cnc B PM* 08 52 40.8627422125 +28 18 58.821345244   14.80   12.814   M4.5V 136 0
18 * 47 UMa PM* 10 59 27.9727514012 +40 25 48.920572724   5.66   4.7   G1-VFe-0.5 748 1
19 V* NO UMa RS* 12 31 18.9376512624 +55 07 08.278288104   9.04 8.10     K2Ve 126 0
20 HD 110463 BY* 12 41 44.5223098128 +55 43 28.822255644   9.250 8.265     K3Ve 105 0
21 * 10 CVn PM* 12 44 59.4049642264 +39 16 44.098132297 6.47 6.50 5.95 5.41 5.12 F9V_Fe-0.3 351 0
22 HD 114762 SB* 13 12 19.7410686234 +17 31 01.630334317 7.78         F9VgF8mF4+M6?V 528 1
23 * 70 Vir PM* 13 28 25.8085908881 +13 46 43.638308807 5.930 5.680 4.970 4.37 3.98 G4Va 695 1
24 * tau Boo Ro* 13 47 15.7381720026 +17 27 24.809555600 5.02 4.98 4.49 4.09 3.85 F7IV-V 942 1
25 * alf Cen B PM* 14 39 35.06311 -60 50 15.0992 2.89 2.21 1.33     K1V 963 1
26 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1206 0
27 * chi Her PM* 15 52 40.5410491705 +42 27 05.462878877 5.19 5.19 4.62 4.14 3.82 F8VFe-2Hdel-1 490 0
28 * 18 Sco PM* 16 15 37.2702755653 -08 22 09.982125430   6.15 5.50     G2Va 543 0
29 HD 148816 PM* 16 30 28.4586254384 +04 10 41.602836534 7.75 7.81 7.28 6.82 6.49 F7V 297 0
30 HD 150177 PM* 16 39 39.1296604152 -09 33 16.512558300   6.794 6.332     F6V 147 0
31 V* V2213 Oph BY* 17 05 16.8186610814 +00 42 09.221511649   6.59   5.6   F8.5IV-V 329 0
32 HD 157089 PM* 17 21 07.0564477831 +01 26 34.983929347 7.60 7.59 7.01 6.46 6.14 F8VgF8mF6 240 0
33 HD 160693 PM* 17 39 36.8721883235 +37 11 01.504256846 8.94 8.92   8.0   G0 202 0
34 * b Her SB* 18 07 01.5906608928 +30 33 43.584892488 5.52 5.67 5.13 4.61 4.28 F6V 441 0
35 * 16 Cyg A ** 19 41 48.9534996168 +50 31 30.219536784 6.79 6.59 5.95 5.50 5.17 G1.5Vb 715 1
36 * 16 Cyg B PM* 19 41 51.9726777456 +50 31 03.089030916 7.07 6.86 6.20 5.76 5.42 G3V 839 1
37 HD 195633 PM* 20 32 23.9917043856 +06 31 03.255667608 9.05 9.03 8.52     G0Vw 137 0
38 HD 208906 PM* 21 58 40.8320586106 +29 48 45.462564846 7.35 7.47 6.96 6.53 6.22 G0VmF2 167 0
39 * 51 Peg PM* 22 57 27.9804852576 +20 46 07.797040104 6.39 6.16 5.46 4.97 4.61 G2IV 1118 1

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2022.07.05-17:44:58

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