2014A&A...572A..48R


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST15:17:52

2014A&A...572A..48R - Astronomy and Astrophysics, volume 572A, 48-48 (2014/12-1)

The Solar Twin Planet Search. I. Fundamental parameters of the stellar sample.

RAMIREZ I., MELENDEZ J., BEAN J., ASPLUND M., BEDELL M., MONROE T., CASAGRANDE L., SCHIRBEL L., DREIZLER S., TESKE J., TUCCI MAIA M., ALVES-BRITO A. and BAUMANN P.

Abstract (from CDS):

We are carrying out a search for planets around a sample of solar twin stars using the HARPS spectrograph. The goal of this project is to exploit the advantage offered by solar twins to obtain chemical abundances of unmatched precision. This survey will enable new studies of the stellar composition - planet connection. We determine the fundamental parameters of the 88 solar twin stars that have been chosen as targets for our experiment. We used the MIKE spectrograph on the Magellan Clay Telescope to acquire high resolution, high signal-to-noise ratio spectra of our sample stars. We measured the equivalent widths of iron lines and used strict differential excitation/ionization balance analysis to determine atmospheric parameters of unprecedented internal precision: σ(Teff)=7K, σ(logg)=0.019, σ([Fe/H])=0.006dex, σ(vt)=0.016km/s. Reliable relative ages and highly precise masses were then estimated using theoretical isochrones. The spectroscopic parameters we derived are in good agreement with those measured using other independent techniques. There is even better agreement if the sample is restricted to those stars with the most internally precise determinations of stellar parameters in every technique involved. The root-mean-square scatter of the differences seen is fully compatible with the observational errors, demonstrating, as assumed thus far, that systematic uncertainties in the stellar parameters are negligible in the study of solar twins. We find a tight activity-age relation for our sample stars, which validates the internal precision of our dating method. Furthermore, we find that the solar cycle is perfectly consistent both with this trend and its star-to-star scatter. We present the largest sample of solar twins analyzed homogeneously using high quality spectra. The fundamental parameters derived from this work will be employed in subsequent work that aims to explore the connections between planet formation and stellar chemical composition.

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: fundamental parameters - planetary systems

Simbad objects: 92

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Number of rows : 92

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 HD 2071 PM* 00 24 42.5485223710 -53 59 02.396695788   7.95 7.27     G2V 68 0
2 HD 3821 ** 00 40 47.48277 -07 13 57.3771           G1V+K5V 68 0
3 HD 6204 * 01 02 57.4204868552 -09 51 40.460185331   9.17 8.53     G3V 32 0
4 HD 6718 PM* 01 07 48.6629868879 -08 14 01.330605474   9.087 8.45     G5V 71 1
5 HD 8291 PM* 01 22 18.7218217766 +03 30 47.255876676       8.3   G5V 35 0
6 HD 9986 PM* 01 37 40.8792727548 +12 04 42.171416648   7.43 6.76     G2V 88 0
7 HD 11195 * 01 49 42.9210363773 -18 56 09.842522100   9.54 8.91     G5V 32 0
8 HD 12264 PM* 02 00 05.3380960261 -13 32 46.000032697   8.64 7.98     G5V 49 0
9 HD 13357 ** 02 10 52.07912 +13 40 59.7887   8.35 7.65     G5IV 58 0
10 * 66 Cet B PM* 02 12 46.6412523732 -02 23 46.792715544   8.42 7.74     G1V 71 0
11 HD 16008 PM* 02 33 49.0263031764 -19 36 42.500345899   9.24 8.58     G5V 41 0
12 HD 19467 PM* 03 07 18.5750358835 -13 45 42.419198459   7.65 7.00 7.79 8.82 G3V 121 0
13 HD 19518 PM* 03 08 44.3072760070 +15 20 05.385636983 8.590 8.460   7.4   G8V 50 0
14 HD 19632 PM* 03 08 52.4456738030 -24 53 15.532862086   7.97 7.28     G5V 69 0
15 HD 20782 PM* 03 20 03.5777409770 -28 51 14.660409684   8.03 7.38     G1.5V 157 1
16 HD 25874 PM* 04 02 26.9852805917 -61 21 25.130544995   7.41 6.73     G2V 60 0
17 HD 26990 ** 04 16 16.5221579662 +07 09 33.777352427   8.14 7.51     G0V: 65 0
18 HD 28904 PM* 04 31 04.7882284868 -45 21 37.550924469   8.87 8.29     G3V 40 0
19 * 58 Eri BY* 04 47 36.2917607568 -16 56 04.041927355   6.14 5.50     G2.5IV-V 384 0
20 HD 30774 ** 04 49 13.3249191031 -31 25 35.614628748   8.58 7.90     G5V 38 0
21 HD 36152 PM* 05 28 59.1280208092 -17 25 45.265979943   8.95 8.27     G5V 51 0
22 HD 39881 PM* 05 56 03.4329867449 +13 55 29.695861517   7.252 6.600 7.55   G8 119 0
23 HD 42618 PM* 06 12 00.5668246170 +06 46 59.057316892 7.632 7.496 6.839 6.478 6.143 G4V 145 0
24 HD 42807 RS* 06 13 12.5027477683 +10 37 37.713412362   7.12   6.0   G5V 202 0
25 HD 45021 PM* 06 19 14.9364802274 -68 49 53.002288014   9.83 9.15     G5V 26 0
26 HD 44665 ** 06 20 46.83558 -44 47 20.9987           G5V 33 0
27 HD 44821 * 06 22 57.6705690753 -24 33 21.731071389   8.04 7.36     K0/1V(+G) 53 0
28 HD 45289 PM* 06 24 24.3504406831 -42 50 51.065016406   7.35 6.67     G2V 110 0
29 HD 45346 PM* 06 24 43.7599998222 -43 24 20.426416714   9.32 8.63     G5V 38 0
30 HD 50806 PM* 06 53 33.9426033431 -28 32 23.255947738   6.75 6.04     G5V 125 0
31 HD 54351 PM* 07 09 04.9568214168 +15 25 17.723603374   8.65   7.6   G4 55 0
32 HD 59711 PM* 07 30 40.0131777539 -15 59 40.505491099   8.35 7.71     G2V 68 0
33 HD 59967 PM* 07 30 42.5117283582 -37 20 21.704201159 7.386 7.274 6.635 6.28 5.945 G3V 126 0
34 HD 63487 PM* 07 48 05.9777994162 -27 31 10.672850923   9.82 9.20     G2V 35 0
35 HD 68168 PM* 08 11 49.1884896739 +16 31 25.906701424   8.02   6.9   G0 66 0
36 HD 71334 PM* 08 25 49.5157058164 -29 55 50.130492534   8.49 7.82     G2.5V 104 0
37 V* V401 Hya BY* 08 37 50.2937802584 -06 48 24.777904953 7.577 7.394 6.725 6.365 6.029 G8/K0(IV) 137 0
38 HD 75302 PM* 08 49 12.5290101188 +03 29 05.120327518       7.0   G5V 72 0
39 HD 78429 PM* 09 06 38.8310540540 -43 29 31.117055567   7.93 7.33     G2V 99 0
40 HD 78534 PM* 09 09 10.3671739382 +10 49 18.111193502       8.3   G5 27 0
41 HD 78660 PM* 09 09 53.8594585474 +14 27 24.346651410       7.9   G5 49 0
42 HD 88072 PM* 10 09 23.4290742733 +02 22 15.899376519       7.2   G3V 78 0
43 HD 96116 * 11 04 13.6517787336 -57 45 54.473448673   9.34 8.69     G3V 49 0
44 HD 96423 PM* 11 06 19.7446501611 -44 22 23.939505002   7.92 7.23     G5V 79 0
45 HD 97037 PM* 11 10 13.3434298435 -07 23 21.845579922   7.42 6.81     G1V 81 0
46 HD 98649 PM* 11 20 51.7687156812 -23 13 02.425068034   8.646 7.99 7.75 8.26 G3/5V 47 1
47 HD 101364 PM* 11 40 28.4842891594 +69 00 30.600485781   9.32 8.67     G5 64 0
48 HD 110537 PM* 12 42 59.3251300046 -04 02 57.596129000   8.51 7.83     G6/8V 67 0
49 HD 114174 ** 13 08 51.0231461021 +05 12 26.064930541   7.47   6.3   G3IV+D 140 0
50 HD 115031 PM* 13 15 20.5130831711 -55 20 29.725322411   8.98 8.34     G2/3V 39 0
51 HD 115169 PM* 13 15 47.3883040665 -29 30 21.184039207   9.89 9.20     G3V 24 0
52 HD 117126 SB* 13 28 18.7098973401 -00 50 24.697923338   8.08 7.44     G3/5V 76 0
53 HD 120690 SB* 13 51 20.3417568044 -24 23 25.843045584   7.133 6.43     G5Va 129 0
54 HD 122194 PM* 14 01 03.6087448477 -32 45 25.020124746   10.04 9.36     G3V 38 0
55 HD 124523 PM* 14 15 14.9761119690 -42 48 16.757045631   10.14 9.46     G8V+G 29 0
56 HD 129814 PM* 14 44 11.6934169422 +18 27 43.623343989       7.1   G5V 59 0
57 HD 131923 PM* 14 58 08.8006370909 -48 51 46.636950055   7.06 6.35     G4V 99 0
58 HD 133600 PM* 15 05 13.2481747000 +06 17 23.691579336       7.8   G0 40 0
59 HD 134664 PM* 15 12 10.3535587878 -30 53 10.651147031   8.40 7.73     G1.5V 75 0
60 HD 135101 PM* 15 12 43.4807787593 +19 17 09.741336182   7.36   6.2   G5V_Fe-0.9 147 0
61 HD 138573 PM* 15 32 43.6531754309 +10 58 05.879783892       6.8   G5IV-V 72 0
62 * psi Ser PM* 15 44 01.8189306784 +02 30 54.600773948       5.4   G2.5V 181 0
63 HD 142331 PM* 15 54 19.7884329411 -08 34 49.368533050   9.39 8.75     G5V 25 0
64 HD 145825 PM* 16 14 11.9123896278 -31 39 49.208930807   7.21 6.54     G3V 77 0
65 * 18 Sco PM* 16 15 37.2703721200 -08 22 09.981989277   6.15 5.50     G2Va 484 0
66 HD 145927 PM* 16 16 06.4203184159 -52 48 52.369009669   8.987 8.37     G3V 51 0
67 HD 150248 PM* 16 41 49.7946763722 -45 22 07.509805896   7.66 7.03     G3V+? 73 0
68 HD 153631 SB* 17 01 10.7539977843 -13 34 01.703128971   7.74 7.14     G0V 79 0
69 HD 157347 PM* 17 22 51.2877095327 -02 23 17.439826176   6.965 6.278     G3V 159 0
70 HD 163441 PM* 17 55 45.3496931214 +11 48 14.262712631   9.10 8.44     G5 39 0
71 HD 167060 PM* 18 17 44.1430392515 -61 42 31.622613666   9.56 8.92     G3V 26 0
72 HD 183658 PM* 19 30 52.7191481248 -06 30 51.925192506   7.93 7.28     G3V 87 0
73 HD 183579 PM* 19 33 08.5944190294 -54 31 56.541281763   9.33 8.68     G5V 31 0
74 * 16 Cyg A ** 19 41 48.9539315338 +50 31 30.218780803 6.79 6.59 5.95 5.50 5.17 G1.5Vb 675 1
75 * 16 Cyg ** 19 41 49.09 +50 31 31.6           ~ 121 0
76 * 16 Cyg B PM* 19 41 51.9731830550 +50 31 03.086127222 7.07 6.86 6.20 5.76 5.42 G3V 792 1
77 HD 196390 PM* 20 39 02.5202320733 -49 19 53.126738154   7.96 7.32     G1.5V 47 0
78 HD 197076 PM* 20 40 45.1407864181 +19 56 07.928511642 7.14 7.06 6.44 5.95 5.61 G5V 220 0
79 HD 197027 PM* 20 41 54.6337513102 -27 12 57.415448921   9.80 9.15     G3V 49 0
80 HD 200565 PM* 21 04 05.6856103507 +03 58 50.286941779   9.05   8.0   G5V 57 0
81 HD 200633 PM* 21 04 44.1473821376 -04 49 44.029019407   9.00 8.34     G5V 50 0
82 HD 202628 PM* 21 18 27.2693236958 -43 20 04.746121764   7.39 6.742     G5V 141 0
83 HD 207700 PM* 21 54 45.2048277280 -73 26 18.545574824   8.12 7.43     G4V 71 0
84 HD 208704 PM* 21 58 24.3257845018 -12 39 52.777483342   7.77 7.17     G1V 68 0
85 HD 209562 * 22 04 49.7315427174 -23 43 46.504104021   9.53 8.89     G3V 21 0
86 V* NT Aqr BY* 22 06 05.3019536483 -05 21 29.385255187   8.26 7.58     G5V 77 0
87 HD 210918 PM* 22 14 38.65336 -41 22 53.9866 7.02 6.88 6.23     G2V 176 0
88 HD 219057 * 23 13 09.8158069697 -30 26 59.297041339   10.222 9.625     G3V 36 0
89 HD 220507 PM* 23 24 42.1153597454 -52 42 06.761247344   8.28 7.58     G5V 78 0
90 HD 222582 PM* 23 41 51.5299950324 -05 59 08.731514665   8.34 7.69     G5V 195 2
91 HD 223238 PM* 23 47 52.4055816312 +04 10 31.716576348   8.33   7.3   G5V 70 0
92 HD 224383 PM* 23 57 33.5186236762 -09 38 51.070720084   8.51 7.88     G3V 96 0

    Equat.    Gal    SGal    Ecl

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2020.07.04-15:17:53

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