2011A&A...532A..20F


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.22CET10:00:44

2011A&A...532A..20F - Astronomy and Astrophysics, volume 532A, 20-20 (2011/8-1)

Modeling nearby FGK population I stars: a new form of estimating stellar parameters using an optimization approach.

FERNANDES J.M., VAZ A.I.F. and VICENTE L.N.

Abstract (from CDS):

Modeling a single star with theoretical stellar evolutionary tracks is a nontrivial problem because of a large number of unknowns compared to the number of observations. A current way of estimating stellar age and mass consists of using interpolations in grids of stellar models and/or isochrones, assuming ad hoc values for the mixing length parameter and the metal-to-helium enrichment, which is normally scaled to the solar values. We present a new method to model the FGK main-sequence of Population I stars. This method is capable of simultaneously estimating a set of stellar parameters, namely the mass, the age, the helium and metal abundances, the mixing length parameter, and the overshooting. The proposed method is based on the application of a global optimization algorithm (PSwarm) to solve an optimization problem that in turn consists of finding the values of the stellar parameters that lead to the best possible fit of the given observations. The evaluation of the fitting objective function requires the use of a stellar evolution simulation code, however. The methodology is tested using the Sun and five FGK fictitious stars, and is then adapted to 115 stars with a detailed spectroscopic analysis; half of these are planet-hosting stars. We present and discuss the stellar parameters estimated for each star in the context of previous works.

Abstract Copyright:

Journal keyword(s): methods: numerical - stars: fundamental parameters - Hertzsprung-Russell (HR) and C-M diagrams - planetary systems

Simbad objects: 69

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Number of rows : 69

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 142 PM* 00 06 19.17544 -49 04 30.6817   6.30 5.76     F7V 204 1
2 HD 1237 PM* 00 16 12.6791488703 -79 51 04.244738563 7.692 7.335 6.578     G8V 190 1
3 * zet Tuc PM* 00 20 04.2599713 -64 52 29.254760 4.82 4.80 4.23 3.73 3.40 F9.5V 335 0
4 * bet Hyi PM* 00 25 45.07036 -77 15 15.2860 3.52 3.41 2.79 2.28 1.94 G0V 531 0
5 * 54 Psc PM* 00 39 21.8055114029 +21 15 01.716052732 7.29 6.71 5.88 5.21 4.82 K0.5V 515 1
6 HD 4203 PM* 00 44 41.2002830714 +20 26 56.137993882       8.2   G5 115 1
7 HD 5133 PM* 00 53 01.1351585594 -30 21 24.893457143 8.801 8.11 7.171 6.639 6.179 K2.5Vk: 146 0
8 * nu. Phe PM* 01 15 11.1225892742 -45 31 54.007631265 5.65 5.54 4.96 4.47 4.11 F9VFe+0.4 225 0
9 * ups And PM* 01 36 47.84216 +41 24 19.6443 4.70 4.64 4.10 3.64 3.35 F9V 883 1
10 * p Eri A PM* 01 39 47.8131372047 -56 11 35.950002567   6.549 5.685 6.36   K2V 135 0
11 * q01 Eri PM* 01 42 29.3148822519 -53 44 26.991165270   6.05 5.52     F9V 261 1
12 * 109 Psc PM* 01 44 55.8251018821 +20 04 59.336256238   6.984 6.279     G3Va 245 2
13 HD 12661 PM* 02 04 34.2883519451 +25 24 51.514208219   8.16   7.0   K0V 230 1
14 HD 13445 PM* 02 10 25.9190575041 -50 49 25.467227759   6.94 6.17     K1.5V 407 2
15 * 79 Cet PM* 02 35 19.9292617962 -03 33 38.170691640   7.49 6.78     G2V 257 1
16 HD 17925 RS* 02 52 32.1281853696 -12 46 10.970649463 7.48 6.91 6.05 5.34 4.89 K1V 461 0
17 * alf For ** 03 12 04.5273570 -28 59 15.433684 4.41 4.36 3.85 3.39 3.08 F6V+G7V 240 0
18 * 94 Cet PM* 03 12 46.4369076602 -01 11 45.949836281   5.631 5.070     F8.5V 399 1
19 HD 20367 PM* 03 17 40.0466570902 +31 07 37.358433303   6.962 6.399     F8V 115 1
20 * zet01 Ret PM* 03 17 46.1632605674 -62 34 31.154247481 6.24 6.18 5.54 5.00 4.66 G2.5VHdel1 265 0
21 * zet02 Ret PM* 03 18 12.8185412558 -62 30 22.917300282   5.84 5.24     G1V 320 0
22 * e Eri PM* 03 19 55.6509352 -43 04 11.217495 5.20 4.98 4.27 3.65 3.25 G6V 393 1
23 HD 21175 PM* 03 23 35.2561230462 -40 04 34.968913224 8.302 7.758 6.903 6.439 5.986 K0V 58 0
24 HD 23356 PM* 03 43 55.3429383864 -19 06 39.233302358 8.711 8.012 7.081 6.555 6.098 K2V 107 0
25 HD 23484 PM* 03 44 09.1731527402 -38 16 54.372038074 8.449 7.875 6.996 6.516 6.09 K2V 104 0
26 HD 23596 PM* 03 48 00.3743574570 +40 31 50.300542774   7.85 7.24     F8 104 1
27 * omi02 Eri Fl* 04 15 16.3197260 -07 39 10.338087 5.69 5.25 4.43 3.74 3.29 K0V 734 0
28 HD 28185 PM* 04 26 26.3227027269 -10 33 02.945489682   8.52 7.81     G6.5IV-V 153 1
29 Cl Melotte 25 OpC 04 26 54.00 +15 52 00.0           ~ 2586 0
30 HD 30177 PM* 04 41 54.3739541801 -58 01 14.724686984   9.18 8.37     G8V 110 1
31 * 58 Eri BY* 04 47 36.2917607568 -16 56 04.041927355   6.14 5.50     G2.5IV-V 379 0
32 HD 36435 PM* 05 27 39.3523551876 -60 24 57.584559812 8.068 7.75 6.983 6.573 6.191 G5V 104 0
33 * pi. Men PM* 05 37 09.8851202601 -80 28 08.831347245   6.25 5.67     G0V 220 1
34 HD 38858 PM* 05 48 34.9401453172 -04 05 40.719529406 6.71 6.61 5.97     G2V 243 1
35 HD 40307 PM* 05 54 04.2409953924 -60 01 24.491747849 8.814 8.097 7.147 6.597 6.119 K2.5V 194 1
36 HD 41004 ** 05 59 49.6473573887 -48 14 22.805780232   9.49 8.65     K1IV 150 1
37 HD 40979 PM* 06 04 29.9429293369 +44 15 37.597677891       6.4   F8 132 1
38 HD 43162 BY* 06 13 45.2955618090 -23 51 42.968779940   7.068 6.366 5.94 5.61 G6.5V 142 0
39 HD 46375 PM* 06 33 12.6225933827 +05 27 46.527797938   8.70 7.84     K1IV 201 2
40 HD 50554 PM* 06 54 42.8262327211 +24 14 44.008992953   7.41 6.84     F8V 161 1
41 HD 53143 PM* 06 59 59.6554605549 -61 20 10.249709754 8.035 7.609 6.803 6.375 5.99 G9V 126 0
42 HD 52265 PM* 07 00 18.0357152121 -05 22 01.778490073   6.845 6.282     G0V 277 1
43 HD 53705 PM* 07 03 57.3152423334 -43 36 28.921620874   5.94 5.28 5.05 4.71 G1.5V 164 1
44 HD 57095 ** 07 17 29.56192 -46 58 45.2751 8.362 7.646 6.669     K1V+K4V 71 0
45 HD 65216 PM* 07 53 41.3193105336 -63 38 50.353209584   8.65 7.96     G5V 104 1
46 HD 65486 ** 07 58 04.3704847018 -25 37 35.861805940 10.366 9.497 8.439 7.818 7.28 K4Vk:+T4.5 72 0
47 HD 67199 PM* 08 02 31.1872033292 -66 01 15.379835394 8.656 8.049 7.166 6.685 6.259 K2Vk: 65 0
48 HD 68988 PM* 08 18 22.1727278398 +61 27 38.597348068   8.84 8.19     G0 128 2
49 HD 72673 PM* 08 32 51.4958311521 -31 30 03.062906467   7.17 6.38     K1V 178 0
50 HD 73526 PM* 08 37 16.4834968915 -41 19 08.787335986   9.69 9.00     G6V 162 2
51 HD 75289 PM* 08 47 40.3895634256 -41 44 12.456269569 7.04 6.94 6.36     F9VFe+0.3 238 1
52 * rho01 Cnc PM* 08 52 35.8113282132 +28 19 50.956901366 7.45 6.82   5.4   K0IV-V 949 1
53 HD 76700 PM* 08 53 55.5158663272 -66 48 03.574256032   8.88 8.13     G6V 108 1
54 HD 76151 PM* 08 54 17.9469808897 -05 26 04.046487788 6.89 6.67 6.00     G2V 462 0
55 HD 82943 PM* 09 34 50.7352288445 -12 07 46.363303103   7.17 6.53     F9VFe+0.5 395 2
56 HD 83443 PM* 09 37 11.8276134249 -43 16 19.932615823   9.03 8.24     K0/1V+G(III) 193 1
57 HD 84117 PM* 09 42 14.4165254340 -23 54 56.054079074   5.47 4.94     F9V 173 0
58 HD 92788 PM* 10 42 48.5280658285 -02 11 01.522096792   8.01 7.30     G6V 192 1
59 HD 102117 PM* 11 44 50.4608441567 -58 42 13.356420097   8.20 7.45     G6V 93 1
60 HD 106252 PM* 12 13 29.5100104731 +10 02 29.888816943   8.00   7.0   G0 156 1
61 HD 108147 PM* 12 25 46.2670326229 -64 01 19.515027395   7.532 6.994     F8/G0V 150 1
62 HD 117618 PM* 13 32 25.5555942170 -47 16 16.913384391   7.77 7.17     G0V 97 1
63 * alf Cen ** 14 39 29.71993 -60 49 55.9990   0.4 -0.1     G2V+K1V 793 0
64 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1110 0
65 HD 150706 PM* 16 31 17.5833539505 +79 47 23.199471923   7.622 7.016     G0 171 1
66 HD 179949 PM* 19 15 33.2300861317 -24 10 45.673372382   6.772 6.237     F8V 338 1
67 HD 183263 * 19 28 24.5715522357 +08 21 29.004325092   8.51 7.86     G2IV 97 1
68 HD 187123 PM* 19 46 58.1122608389 +34 25 10.279867125       7.4   G2V 210 1
69 HD 213240 PM* 22 31 00.3665162994 -49 25 59.767492660   7.41 6.80     G0/1V 144 1

    Equat.    Gal    SGal    Ecl

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2019.11.22-10:00:44

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