2019A&A...628A.126M


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.30CET03:27:12

2019A&A...628A.126M - Astronomy and Astrophysics, volume 628A, 126-126 (2019/8-1)

Revisiting the 16 Cygni planet host at unprecedented precision and exploring automated tools for precise abundances.

MAIA M.T., MELENDEZ J., LORENZO-OLIVEIRA D., SPINA L. and JOFRE P.

Abstract (from CDS):

The binary system 16 Cygni is key in studies of the planet-star chemical composition connection, as only one of the stars is known to host a planet. This allows us to better assess the possible influence of planet interactions on the chemical composition of stars that are born from the same cloud and thus should have a similar abundance pattern. In our previous work, we found clear abundance differences for elements with Z≤30 between both components of this system and a trend of these abundances as a function of the condensation temperature (Tc), which suggests a spectral chemical signature related to planet formation. In this work we show that our previous findings are still consistent even if we include more species, such as the volatile N and neutron capture elements (Z>30). We report a slope with Tc of 1.56±0.24x10–5dex/K, that is good agreement with our previous work. We also performed some tests using ARES and iSpec to measure automatically the equivalent width and found Tc slopes in reasonable agreement with our results as well. In addition, we determined abundances for Li and Be by spectral synthesis, finding that 16 Cyg A is richer not only in Li but also in Be, when compared to its companion. This may be evidence of planet engulfment, indicating that the Tc trend found in this binary system may be a chemical signature of planet accretion in the A component, rather than an imprint of the giant planet rocky core formation on 16 Cyg B.

Abstract Copyright: © ESO 2019

Journal keyword(s): Sun: abundances - stars: abundances - stars: solar-type - planet-star interactions

Simbad objects: 22

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Number of rows : 22

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 188 OpC 00 48 26 +85 15.3           ~ 818 0
2 * zet01 Ret PM* 03 17 46.1632605674 -62 34 31.154247481 6.24 6.18 5.54 5.00 4.66 G2.5VHdel1 271 0
3 * zet02 Ret ** 03 18 12.8185412558 -62 30 22.917300282   5.814 5.228     G1V 329 0
4 HD 20781 ** 03 20 02.9428 -28 47 01.790   9.263 8.44 8.17 8.43 G9.5V 85 1
5 HD 20782 PM* 03 20 03.5777409770 -28 51 14.660409684   8.03 7.38     G1.5V 161 1
6 BD+50 1471 PM* 07 48 06.4726006390 +50 13 32.921121328   12.002 11.138 10.669 10.243 G9V 141 1
7 BD+50 1471B PM* 07 48 07.4814220176 +50 13 03.257811342   11.927 11.086 10.631 10.216 G9V 42 0
8 HD 80606 PM* 09 22 37.5769478105 +50 36 13.434928660   9.78 9.00     G5 290 2
9 HD 80607 PM* 09 22 39.7367015092 +50 36 13.952617706   9.937 9.070     G5 83 2
10 HD 106515 ** 12 15 06.56688 -07 15 26.3497           K0-V 54 0
11 HD 133131A PM* 15 03 35.4462766650 -27 50 33.220140030   9.05 8.46 9.18   G2V 22 0
12 BD+36 2593 * 15 19 57.9205371377 +36 13 46.737977732   11.83 11.12     F 83 1
13 Kepler-10 Ro* 19 02 43.0612302512 +50 14 28.700759378       11.00   G 163 1
14 * 16 Cyg A ** 19 41 48.9539315338 +50 31 30.218780803 6.79 6.59 5.95 5.50 5.17 G1.5Vb 679 1
15 * 16 Cyg ** 19 41 49.09 +50 31 31.6           ~ 121 0
16 * 16 Cyg Bb Pl 19 41 51.9731830550 +50 31 03.086127222           ~ 118 1
17 * 16 Cyg B PM* 19 41 51.9731830550 +50 31 03.086127222 7.07 6.86 6.20 5.76 5.42 G3V 799 1
18 HD 200466 ** 21 02 21.90501 +37 39 13.9374           K0V+K0V 37 0
19 BD+37 4734B PM* 22 57 46.8443014981 +38 40 30.355384717   10.82 9.87     G0V 143 1
20 HD 219542 ** 23 16 35.23827 -01 35 11.4798   8.25 7.59     G(5)+(A) 40 0
21 HD 240429 PM* 23 51 55.0287723390 +59 42 48.599105920   10.28 9.70     K0 20 0
22 HD 240430 PM* 23 52 09.2435257553 +59 42 26.518874234   10.16 9.56     G0 21 0

    Equat.    Gal    SGal    Ecl

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2020.10.30-03:27:12

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