2013MNRAS.431.2419C


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.19CET07:31:18

2013MNRAS.431.2419C - Mon. Not. R. Astron. Soc., 431, 2419-2432 (2013/May-3)

A large sample of calibration stars for Gaia: log g from Kepler and CoRoT fields.

CREEVEY O.L., THEVENIN F., BASU S., CHAPLIN W.J., BIGOT L., ELSWORTH Y., HUBER D., MONTEIRO M.J.P.F.G. and SERENELLI A.

Abstract (from CDS):

Asteroseismic data can be used to determine stellar surface gravities with precisions of <0.05dex by using the global seismic quantities <Δν> and νmax along with standard atmospheric data such as Teff and metallicity. Surface gravity is also one of the four stellar properties to be derived by automatic analyses for one billion stars from Gaia data (workpackage gsp_phot). In this paper, we explore seismic data from main-sequence F, G, K stars (solar-like stars) observed by the Kepler spacecraft as a potential calibration source for the methods that Gaia will use for object characterization (logg). We calculate logg for some bright nearby stars for which radii and masses are known (e.g. from interferometry or binaries), and using their global seismic quantities in a grid-based method, we determine an asteroseismic logg to within 0.01dex of the direct calculation, thus validating the accuracy of our method. We also find that errors in adopted atmospheric parameters (mainly [Fe/H]) can, however, cause systematic errors of the order of 0.02dex. We then apply our method to a list of 40 stars to deliver precise values of surface gravity, i.e. uncertainties of the order of 0.02dex, and we find agreement with recent literature values. Finally, we explore the typical precision that we expect in a sample of more than 400 Kepler stars which have their global seismic quantities measured. We find a mean uncertainty (precision) of the order of better than 0.02dex in logg over the full explored range 3.8 < logg < 4.6, with the mean value varying only with stellar magnitude (0.01-0.02dex). We study sources of systematic errors in logg and find possible biases of the order of 0.04dex, independent of logg and magnitude, which accounts for errors in the Teff and [Fe/H] measurements, as well as from using a different grid-based method. We conclude that Kepler stars provide a wealth of reliable information that can help to calibrate methods that Gaia will use, in particular, for source characterization with gsp_phot, where excellent precision (small uncertainties) and accuracy in log g is obtained from seismic data.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): asteroseismology - stars: fundamental parameters - stars: solar-type - Galaxy: fundamental parameters

Simbad objects: 47

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Number of rows : 47

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 * bet Hyi PM* 00 25 45.07036 -77 15 15.2860 3.52 3.41 2.79 2.28 1.94 G0V 530 0
2 * tau Cet PM* 01 44 04.0834226 -15 56 14.926552 4.43 4.22 3.50 2.88 2.41 G8V 1067 1
3 * iot Hor PM* 02 42 33.4664838826 -50 48 01.056222150   5.97 5.40     F8V 333 1
4 * del Eri RS* 03 43 14.9008787 -09 45 48.208444 5.13 4.46 3.54 2.82 2.32 K0+IV 535 0
5 HD 49385A PM* 06 48 11.5030662194 +00 18 17.893672741   7.952 7.399 8.28   G0V 69 1
6 HD 49933 ** 06 50 49.831 -00 32 27.18           F3V 321 1
7 HD 52265 PM* 07 00 18.0357152121 -05 22 01.778490073   6.845 6.282     G0V 276 1
8 * alf CMi SB* 07 39 18.11950 +05 13 29.9552 0.82 0.79 0.37 -0.05 -0.28 F5IV-V+DQZ 1742 0
9 * 171 Pup PM* 07 45 34.9191268687 -34 10 21.283643355   5.95 5.37     F9V 278 0
10 * bet Vir PM* 11 50 41.7182390 +01 45 52.991019 4.26 4.15 3.60 3.13 2.85 F9V 845 0
11 * eta Boo SB* 13 54 41.07892 +18 23 51.7946 3.440 3.250 2.680 2.24 1.95 G0IV 648 1
12 * alf Cen B PM* 14 39 35.06311 -60 50 15.0992 2.89 2.21 1.33     K1V 865 1
13 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1110 0
14 HD 139211 PM* 15 39 56.5438893067 -59 54 30.008916893   6.43 5.95     F6IV 69 0
15 * 18 Sco PM* 16 15 37.2703721200 -08 22 09.981989277   6.15 5.50     G2Va 470 0
16 * mu. Ara PM* 17 44 08.7036342277 -51 50 02.591049123   5.85 5.15     G3IV-V 458 2
17 * 70 Oph BY* 18 05 27.28518 +02 30 00.3558 5.40 4.89 4.03 3.38 2.92 K0-V 602 1
18 HD 170987 ** 18 32 01.73141 +06 46 48.3563           F5 38 1
19 HD 173701 PM* 18 44 35.1192273920 +43 49 59.789089625   8.37 7.52     G8V 123 0
20 BD+47 2703 PM* 18 49 33.6588767037 +47 42 39.607284250   10.16 9.54     F9IV-V 34 0
21 TYC 3123-1088-1 PM* 18 54 55.8846080955 +40 46 31.214455326   10.84 10.15     G3V 20 0
22 HD 176693 Ro* 18 59 08.6846510375 +48 25 23.598982331   9.34 8.83     F8V 89 0
23 HD 177153 PM* 19 01 39.6781881955 +41 29 24.325583971   7.76 7.21     G0 83 0
24 BD+42 3247 PM* 19 06 58.3261704119 +42 26 08.264161006   10.32 9.75     G0.5IV 52 0
25 HD 179070 Ro* 19 09 26.8351401260 +38 42 50.455094310   8.767 8.25 8.00   F6IV 128 3
26 BD+39 3706 PM* 19 16 34.9029087477 +40 02 50.362111184       9.1   G1.5V 58 0
27 HD 234856 Ro* 19 17 45.8021284617 +50 28 48.273320177   9.87 9.32     F9IV-V 63 0
28 HD 181207 PM* 19 17 46.3566541779 +41 24 36.837551319   9.06 8.47     F9IV-V 67 0
29 HD 181420 PM* 19 20 27.0723438937 -01 18 35.134035438   6.98 6.55     F6V 76 0
30 BD+43 3221 * 19 20 47.9394314405 +44 09 18.749657280   10.03 9.50     F9IV-V 54 0
31 HD 181906 PM* 19 22 21.3635543490 +00 22 58.780980513   8.11 7.65     F5V 55 0
32 BD+43 3228 PM* 19 23 56.4114026497 +43 18 52.534860977   10.84 10.15     G0V 45 0
33 BD+41 3338 * 19 24 11.1934178701 +42 03 09.726580716   9.97 9.19     G8IV-V 53 0
34 HD 182756 * 19 24 30.3488994710 +40 19 23.671169678   9.01 8.31     G1V 50 0
35 HD 183298 PM* 19 26 22.0908800928 +50 59 14.333199265   8.71 8.16     G0.5IV 72 0
36 TYC 3551-149-1 PM* 19 27 20.4902312930 +48 57 12.008653325   10.59 9.85     G5IV 41 0
37 TYC 3551-1158-1 * 19 29 01.8628926338 +49 51 54.858932779   11.39 10.83     G2V 15 0
38 * tet Cyg PM* 19 36 26.5343563 +50 13 15.964573 4.83 4.86 4.48 4.13 3.92 F3+V 320 1
39 TYC 3135-624-1 PM* 19 36 48.8136899967 +38 42 56.787490867   10.35 9.55     G5IV 55 0
40 BD+44 3197 PM* 19 37 54.5253612516 +44 59 04.628808348       9.3   G0IV 55 0
41 HD 185834 * 19 39 00.6725787612 +46 54 06.983774230   9.26 8.78     F6IV 28 0
42 * 16 Cyg A ** 19 41 48.9539315338 +50 31 30.218780803 6.79 6.59 5.95 5.50 5.17 G1.5Vb 665 1
43 * 16 Cyg B PM* 19 41 51.9731830550 +50 31 03.086127222 7.07 6.86 6.20 5.76 5.42 G3V 782 1
44 HD 187160 SB* 19 46 41.3660194374 +44 20 54.685297711   7.650 7.083     F9IV-V 76 0
45 BD+43 3368 * 19 48 14.2913903442 +43 44 48.960378018   9.63 9.17     F8V 30 0
46 * gam Pav PM* 21 26 26.6048372 -65 21 58.314484 4.57 4.70 4.22 3.75 3.45 F9VFe-1.4CH-0.7 371 0
47 * tau PsA PM* 22 10 08.7803395485 -32 32 54.275502381   5.40 4.92     F6V 127 0

    Equat.    Gal    SGal    Ecl

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2019.11.19-07:31:18

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