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


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.10CEST01:48:15

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

goto Full paper

goto View the reference in ADS

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 208 1
2 HD 1237 PM* 00 16 12.6791488703 -79 51 04.244738563 7.692 7.335 6.578     G8V 194 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 342 0
4 * bet Hyi PM* 00 25 45.07036 -77 15 15.2860 3.52 3.41 2.79 2.28 1.94 G0V 544 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 524 1
6 HD 4203 PM* 00 44 41.2002830714 +20 26 56.137993882       8.2   G5 117 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: 150 0
8 * nu. Phe PM* 01 15 11.1225892742 -45 31 54.007631265 5.65 5.54 4.96 4.47 4.11 F9VFe+0.4 230 0
9 * ups And PM* 01 36 47.84216 +41 24 19.6443 4.70 4.64 4.10 3.64 3.35 F9V 889 1
10 * p Eri A PM* 01 39 47.8131372047 -56 11 35.950002567   6.549 5.685 6.36   K2V 137 0
11 * q01 Eri PM* 01 42 29.3148822519 -53 44 26.991165270   6.05 5.52     F9V 263 1
12 * 109 Psc PM* 01 44 55.8251018821 +20 04 59.336256238   6.984 6.279     G3Va 250 2
13 HD 12661 PM* 02 04 34.2883519451 +25 24 51.514208219   8.16   7.0   K0V 232 1
14 HD 13445 PM* 02 10 25.9190575041 -50 49 25.467227759   6.94 6.17     K1.5V 414 2
15 * 79 Cet PM* 02 35 19.9292617962 -03 33 38.170691640   7.49 6.78     G2V 262 1
16 HD 17925 RS* 02 52 32.1281853696 -12 46 10.970649463 7.48 6.91 6.05 5.34 4.89 K1V 470 0
17 * alf For ** 03 12 04.5273570 -28 59 15.433684 4.41 4.36 3.85 3.39 3.08 F6V+G7V 244 0
18 * 94 Cet PM* 03 12 46.4369076602 -01 11 45.949836281   5.631 5.070     F8.5V 402 1
19 HD 20367 PM* 03 17 40.0466570902 +31 07 37.358433303   6.962 6.399     F8V 117 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 269 0
21 * zet02 Ret PM* 03 18 12.8185412558 -62 30 22.917300282   5.84 5.24     G1V 325 0
22 * e Eri PM* 03 19 55.6509352 -43 04 11.217495 5.20 4.98 4.27 3.65 3.25 G6V 397 1
23 HD 21175 PM* 03 23 35.2561230462 -40 04 34.968913224 8.302 7.758 6.903 6.439 5.986 K0V 59 0
24 HD 23356 PM* 03 43 55.3429383864 -19 06 39.233302358 8.711 8.012 7.081 6.555 6.098 K2V 111 0
25 HD 23484 PM* 03 44 09.1731527402 -38 16 54.372038074 8.449 7.875 6.996 6.516 6.09 K2V 107 0
26 HD 23596 PM* 03 48 00.3743574570 +40 31 50.300542774   7.85 7.24     F8 106 1
27 * omi02 Eri Fl* 04 15 16.3197260 -07 39 10.338087 5.69 5.25 4.43 3.74 3.29 K0V 742 0
28 HD 28185 PM* 04 26 26.3227027269 -10 33 02.945489682   8.52 7.81     G6.5IV-V 157 1
29 Cl Melotte 25 OpC 04 26 54.00 +15 52 00.0           ~ 2654 0
30 HD 30177 PM* 04 41 54.3739541801 -58 01 14.724686984   9.18 8.37     G8V 112 1
31 * 58 Eri BY* 04 47 36.2917607568 -16 56 04.041927355   6.14 5.50     G2.5IV-V 384 0
32 HD 36435 PM* 05 27 39.3523551876 -60 24 57.584559812 8.068 7.75 6.983 6.573 6.191 G5V 105 0
33 * pi. Men PM* 05 37 09.8851202601 -80 28 08.831347245   6.25 5.67     G0V 233 1
34 HD 38858 PM* 05 48 34.9401453172 -04 05 40.719529406 6.71 6.61 5.97     G2V 252 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 199 1
36 HD 41004 ** 05 59 49.6473573887 -48 14 22.805780232   9.49 8.65     K1IV 151 1
37 HD 40979 PM* 06 04 29.9429293369 +44 15 37.597677891       6.4   F8 134 1
38 HD 43162 BY* 06 13 45.2955618090 -23 51 42.968779940   7.068 6.366 5.94 5.61 G6.5V 146 0
39 HD 46375 PM* 06 33 12.6225933827 +05 27 46.527797938   8.70 7.84     K1IV 205 2
40 HD 50554 PM* 06 54 42.8262327211 +24 14 44.008992953   7.41 6.84     F8V 166 1
41 HD 53143 PM* 06 59 59.6554605549 -61 20 10.249709754 8.035 7.609 6.803 6.375 5.99 G9V 129 0
42 HD 52265 PM* 07 00 18.0357152121 -05 22 01.778490073   6.845 6.282     G0V 286 1
43 HD 53705 PM* 07 03 57.3152423334 -43 36 28.921620874   5.94 5.28 5.05 4.71 G1.5V 169 1
44 HD 57095 ** 07 17 29.56192 -46 58 45.2751 8.362 7.646 6.669     K1V+K4V 73 0
45 HD 65216 PM* 07 53 41.3193105336 -63 38 50.353209584   8.65 7.96     G5V 105 1
46 HD 65486 PM* 07 58 04.3704847018 -25 37 35.861805940 10.366 9.497 8.439 7.818 7.28 K4-V(k) 76 0
47 HD 67199 PM* 08 02 31.1872033292 -66 01 15.379835394 8.656 8.049 7.166 6.685 6.259 K2Vk: 67 0
48 HD 68988 PM* 08 18 22.1727278398 +61 27 38.597348068   8.84 8.19     G0 129 2
49 HD 72673 PM* 08 32 51.4958311521 -31 30 03.062906467   7.17 6.38     K1V 182 0
50 HD 73526 PM* 08 37 16.4834968915 -41 19 08.787335986   9.69 9.00     G6V 168 2
51 HD 75289 PM* 08 47 40.3895634256 -41 44 12.456269569 7.04 6.94 6.36     F9VFe+0.3 242 1
52 * rho01 Cnc PM* 08 52 35.8113282132 +28 19 50.956901366 7.45 6.82   5.4   K0IV-V 969 1
53 HD 76700 PM* 08 53 55.5158663272 -66 48 03.574256032   8.88 8.13     G6V 109 1
54 HD 76151 PM* 08 54 17.9469808897 -05 26 04.046487788 6.89 6.67 6.00     G2V 471 0
55 HD 82943 PM* 09 34 50.7352288445 -12 07 46.363303103   7.17 6.53     F9VFe+0.5 401 2
56 HD 83443 PM* 09 37 11.8276134249 -43 16 19.932615823   9.03 8.24     K0/1V+G(III) 196 1
57 HD 84117 PM* 09 42 14.4165254340 -23 54 56.054079074   5.47 4.94     F9V 176 0
58 HD 92788 PM* 10 42 48.5280658285 -02 11 01.522096792   8.01 7.30     G6V 195 1
59 HD 102117 PM* 11 44 50.4608441567 -58 42 13.356420097   8.20 7.45     G6V 94 1
60 HD 106252 PM* 12 13 29.5100104731 +10 02 29.888816943   8.00   7.0   G0 158 1
61 HD 108147 PM* 12 25 46.2670326229 -64 01 19.515027395   7.532 6.994     F8/G0V 152 1
62 HD 117618 PM* 13 32 25.5555942170 -47 16 16.913384391   7.77 7.17     G0V 98 1
63 * alf Cen ** 14 39 29.71993 -60 49 55.9990   0.4 -0.1     G2V+K1V 817 0
64 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1138 0
65 HD 150706 PM* 16 31 17.5833539505 +79 47 23.199471923   7.622 7.016     G0 178 1
66 HD 179949 BY* 19 15 33.2300861317 -24 10 45.673372382   6.772 6.237     F8V 350 1
67 HD 183263 * 19 28 24.5715522357 +08 21 29.004325092   8.51 7.86     G2IV 99 1
68 HD 187123 PM* 19 46 58.1122608389 +34 25 10.279867125       7.4   G2V 212 1
69 HD 213240 PM* 22 31 00.3665162994 -49 25 59.767492660   7.41 6.80     G0/1V 146 1

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2011A&A...532A..20F and select 'bookmark this link' or equivalent in the popup menu


2020.07.10-01:48:15

© Université de Strasbourg/CNRS

    • Contact