2006A&A...449..809E

Query : 2006A&A...449..809E

2006A&A...449..809E - Astronomy and Astrophysics, volume 449809-816 (2006/4-2)

Abundance ratios of volatile vs. refractory elements in planet-harbouring stars: hints of pollution?

ECUVILLON A., ISRAELIAN G., SANTOS N.C., MAYOR M. and GILLI G.

Abstract (from CDS):

We present the [X/H] trends as a function of the elemental condensation temperature TC in 88 planet host stars and in a volume-limited comparison sample of 33 dwarfs without detected planetary companions. We gathered homogeneous abundance results for many volatile and refractory elements spanning a wide range of TC, from a few dozen to several hundred kelvin. We investigate possible anomalous trends of planet hosts with respect to comparison sample stars to detect evidence of possible pollution events. No significant differences are found in the behaviour of stars with and without planets. This is consistent with a ``primordial'' origin of the metal excess in planet host stars. However, a subgroup of 5 planet host and 1 comparison sample stars stands out as having particularly high [X/H] vs. TC slopes.

Abstract Copyright: ∼

Journal keyword(s): stars: abundances - stars: chemically peculiar - stars: evolution - planetary systems - solar neighbourhood

Simbad objects: 51

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Number of rows : 51
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 HD 142 PM* 00 06 19.1753245111 -49 04 30.671249608   6.30 5.76     F7V 271 1
2 HD 2039 PM* 00 24 20.2778342016 -56 39 00.179564220   9.65 8.99     G2/3IV/V 121 1
3 HD 4208 PM* 00 44 26.6506707202 -26 30 56.455527913   8.46 7.79     G7VFe-1CH-0.5 224 1
4 HD 4203 PM* 00 44 41.2002505536 +20 26 56.138079876       8.2   G6V 154 1
5 HD 8574 PM* 01 25 12.5157281952 +28 34 00.103021788       6.8   F8 170 1
6 HD 12661 PM* 02 04 34.2881404104 +25 24 51.513637932   8.16   7.0   K0V 278 1
7 * alf For PM* 03 12 04.5298039833 -28 59 15.439152331 4.41 4.51 3.98 3.39 3.08 F6V 296 0
8 HD 20367 PM* 03 17 40.0468295160 +31 07 37.360398072   6.962 6.399     F8V 144 1
9 HD 20367b Pl 03 17 40.0468295160 +31 07 37.360398072           ~ 25 1
10 * zet02 Ret ** 03 18 12.8188824117 -62 30 22.904711032   5.814 5.228     G1V 399 0
11 * eps Eri BY* 03 32 55.8444911587 -09 27 29.739493865 5.19 4.61 3.73 3.00 2.54 K2V 2073 1
12 HD 23484 PM* 03 44 09.1729719544 -38 16 54.372263223 8.449 7.875 6.996 6.516 6.09 K2V 136 0
13 * omi02 Eri PM* 04 15 16.3196189945 -07 39 10.330779018 5.69 5.25 4.43 3.74 3.29 K0V 879 0
14 HD 33636 Pe* 05 11 46.4494089528 +04 24 12.742146936   7.59 6.98 6.6   G0V_CH-0.3 204 1
15 HD 37124 PM* 05 37 02.4866159419 +20 43 50.832948117   8.35   7.2   G4IV-V 321 2
16 * pi. Men PM* 05 37 09.8868446714 -80 28 08.834553264   6.25 5.67     G0V 390 1
17 HD 40979 PM* 06 04 29.9431332528 +44 15 37.593981720       6.4   F8 180 1
18 HD 40979b Pl 06 04 29.9431332528 +44 15 37.593981720           ~ 43 1
19 HD 53706 PM* 07 03 58.9212523543 -43 36 40.873487765 7.978 7.632 6.851 6.427 6.013 K0.5V 148 0
20 HD 68988 PM* 08 18 22.1728652088 +61 27 38.595044628   8.84 8.19     G1V 175 2
21 HD 69830 PM* 08 18 23.9469682407 -12 37 55.817187530   6.74 5.95     G8:V 587 1
22 HD 72673 PM* 08 32 51.4956803280 -31 30 03.064960317   7.17 6.38     K1V 242 0
23 V* CS Pyx BY* 08 36 23.0165447400 -30 02 15.446225796   8.84 8.06     G8IV-VFe+0.5 177 1
24 HD 73526 PM* 08 37 16.4833548528 -41 19 08.790456324   9.69 9.00     G6V 206 2
25 HD 74576 PM* 08 43 18.0303716918 -38 52 56.570847350   7.49 6.56     K3V 157 0
26 HD 76700 PM* 08 53 55.5161171358 -66 48 03.575953228   8.88 8.13     G6V 139 1
27 HD 76700b Pl 08 53 55.5161171358 -66 48 03.575953228           ~ 42 1
28 HD 76151 PM* 08 54 17.9470964696 -05 26 04.054298491 6.89 6.67 6.00     G2V 580 0
29 HD 80606 PM* 09 22 37.5768032712 +50 36 13.435326684   9.78 9.00     G8V 366 2
30 HD 82943 PM* 09 34 50.7353072232 -12 07 46.369202196   7.17 6.53     F9VFe+0.5 498 2
31 HD 83443b Pl 09 37 11.8275201048 -43 16 19.933774320           ~ 74 1
32 HD 83443 PM* 09 37 11.8275201048 -43 16 19.933774320   9.03 8.24     K0/1V+G(III) 250 1
33 HD 84117 PM* 09 42 14.4162029298 -23 54 56.042043626   5.47 4.94     F9V 233 0
34 HD 89744 PM* 10 22 10.5618854376 +41 13 46.309698444   6.25 5.72     F7V 360 1
35 HD 108874 PM* 12 30 26.8817398344 +22 52 47.377485192   9.49   8.3   G9V 182 1
36 HD 114386 PM* 13 10 39.8240970781 -35 03 17.214743596   9.80 8.71     K3V 134 1
37 HD 114762 SB* 13 12 19.7410686234 +17 31 01.630334317 7.78         F9VgF8mF4+M6?V 570 1
38 HD 114783b Pl 13 12 43.7855575272 -02 15 54.130663296           ~ 43 1
39 HD 114783 PM* 13 12 43.7855575272 -02 15 54.130663296 9.137 8.469 7.550 7.053 6.627 K1V 214 1
40 HD 128311 BY* 14 36 00.5602765558 +09 44 47.454573266 9.232 8.441 7.446 6.895 6.425 K3V 338 1
41 HD 147513 PM* 16 24 01.2911377368 -39 11 34.729913940 6.17 6.02 5.376     G5V 389 1
42 HD 169830 * 18 27 49.4849984976 -29 49 00.700831380   6.406 5.902 7.01   F7V 298 1
43 HD 169830b Pl 18 27 49.4849984976 -29 49 00.700831380           ~ 56 1
44 * 16 Cyg B PM* 19 41 51.9726777456 +50 31 03.089030916 7.07 6.86 6.20 5.76 5.42 G3V 949 1
45 HD 195019 PM* 20 28 18.6366815627 +18 46 10.180434472 7.730     6.5   G1V 276 1
46 HD 195019b Pl 20 28 18.6366815627 +18 46 10.180434472           ~ 74 1
47 HD 196761 PM* 20 40 11.7551137131 -23 46 25.918619793   7.09 6.37     G7.5IV-V 215 0
48 HD 211415 PM* 22 18 15.6133953371 -53 37 37.466806476   5.98 5.39 6.52   G0V 212 0
49 * 51 Peg PM* 22 57 27.9804852576 +20 46 07.797040104 6.39 6.16 5.46 4.97 4.61 G2IV 1216 1
50 HD 217107 ** 22 58 15.5408995872 -02 23 43.383234768   6.919 6.163     G8IV-V 398 1
51 HD 222335 PM* 23 39 51.3061744413 -32 44 36.264172739 8.408 8.002 7.191 6.745 6.34 G9.5V 146 0

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