2011A&A...535A..17B

Query : 2011A&A...535A..17B

2011A&A...535A..17B - Astronomy and Astrophysics, volume 535A17-17 (2011/11-1)

Bisectors of the HARPS cross-correlation function. The dependence on stellar atmospheric parameters.

BASTURK O., DALL T.H., COLLET R., LO CURTO G. and SELAM S.O.

Abstract (from CDS):

Bisectors of the HARPS cross-correlation function (CCF) can discern between planetary radial-velocity (RV) signals and spurious RV signals from stellar magnetic activity variations. However, little is known about the effects of the stellar atmosphere on CCF bisectors or how these effects vary with spectral type and luminosity class. Here we investigate the variations in the shapes of HARPS CCF bisectors across the HR diagram in order to relate these to the basic stellar parameters, surface gravity and temperature. We use archive spectra of 67 well studied stars observed with HARPS and extract mean CCF bisectors. We derive previously defined bisector measures (BIS, vbot, cb) and we define and derive a new measure called the CCF bisector span (CBS) from the minimum radius of curvature on direct fits to the CCF bisector. We show that the bisector measures correlate differently, and non-linearly with logg and Teff. The resulting correlations allow for the estimation of logg and Teff from the bisector measures. We compare our results with 3D stellar atmosphere models and show that we can reproduce the shape of the CCF bisector for the Sun.

Abstract Copyright: ∼

Journal keyword(s): instrumentation: spectrographs - techniques: radial velocities - line: profiles - stars: atmospheres - stars: activity

Simbad objects: 66

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Number of rows : 66
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 1461 PM* 00 18 41.8676757921 -08 03 10.803829898   7.14 6.46     G3VFe0.5 413 1
2 HD 4915 PM* 00 51 10.8478903584 -05 02 21.401155212 7.792 7.643 6.972 6.604 6.252 G5V 163 0
3 HD 7449 PM* 01 14 29.3222869752 -05 02 50.614788804   8.08 7.48     F9.5V 137 2
4 * tau Cet PM* 01 44 04.0831371922 -15 56 14.927607677 4.43 4.22 3.50 2.88 2.41 G8V 1354 1
5 * lam02 For PM* 02 36 58.6077493776 -34 34 40.711246464 6.67 6.45 5.79     G1V 236 1
6 * zet02 Ret ** 03 18 12.8188824117 -62 30 22.904711032   5.814 5.228     G1V 399 0
7 * e Eri PM* 03 19 55.6509122226 -43 04 11.215188426 5.20 4.98 4.27 3.65 3.25 G6V 501 1
8 HD 21019 PM* 03 23 17.7011620632 -07 47 38.755366656   6.92 6.23     G5/6V 168 0
9 HD 21693 PM* 03 27 12.4815289824 -58 19 25.249845108   8.715 7.94 8.00 8.61 G9IV-V 93 1
10 * eps Eri BY* 03 32 55.8444911587 -09 27 29.739493865 5.19 4.61 3.73 3.00 2.54 K2V 2073 1
11 * del Eri PM* 03 43 14.9005379551 -09 45 48.210955899 5.13 4.46 3.54 2.82 2.32 K0+IV 651 0
12 * alf Hor PM* 04 14 00.1142226166 -42 17 39.726755131 5.97 4.96 3.86 3.00 2.41 K2III 150 0
13 HD 38973 PM* 05 46 27.9903916200 -53 13 09.566491080   7.22 6.63     G0V 96 0
14 HD 38858 PM* 05 48 34.9402551240 -04 05 40.721787744 6.71 6.61 5.97     G2V 349 1
15 HD 40307 PM* 05 54 04.2405000288 -60 01 24.493007640 8.814 8.097 7.147 6.597 6.119 K2.5V 305 1
16 HD 50806 PM* 06 53 33.9425265992 -28 32 23.259823557   6.75 6.04     G5V 175 0
17 * 20 Mon PM* 07 10 13.6815026472 -04 14 13.585055244 6.73 5.95 4.92 4.13 3.61 K0III 162 0
18 HD 59468 PM* 07 27 25.4642316432 -51 24 09.361548180 7.689 7.428 6.714 6.33 5.976 G6.5V 151 0
19 HD 60532 PM* 07 34 03.1805638968 -22 17 45.843172440 5.02 4.94 4.39     F6IV-V 244 1
20 * alf CMi SB* 07 39 18.11950 +05 13 29.9552 0.82 0.79 0.37 -0.05 -0.28 F5IV-V+DQZ 1925 0
21 * 140 Pup * 07 40 23.2104428256 -15 15 50.110710444   6.503 4.951     K3III 63 0
22 * alf Mon PM* 07 41 14.8319734511 -09 33 04.077766984 5.83 4.95 3.93 3.16 2.64 G9.5III-IIIbFe-0.5 214 0
23 * 27 Mon PM* 07 59 44.1530631384 -03 40 46.508411136   6.137 4.934     K1III 94 0
24 HD 68978 PM* 08 13 34.4987570641 -31 44 07.381786853   7.36 6.75     G0.5V 109 0
25 HD 69830 PM* 08 18 23.9469682407 -12 37 55.817187530   6.74 5.95     G8:V 587 1
26 HD 72673 PM* 08 32 51.4956803280 -31 30 03.064960317   7.17 6.38     K1V 242 0
27 HD 73524 PM* 08 37 19.9928801266 -40 08 51.599735729 7.29 7.15 6.55     G0Vp 153 0
28 * zet Pyx PM* 08 39 42.4740344784 -29 33 39.904538472   5.777 4.872     G6IIIbCN-0.5 68 0
29 * lam Pyx PM* 09 23 12.2502975192 -28 50 01.900865148 6.22 5.59 4.68 3.97 3.50 G8.5IIIbFe-1 63 0
30 * alf Hya * 09 27 35.24270 -08 39 30.9583 5.14 3.42 1.97 0.93 0.16 K3IIIa 455 1
31 HD 84117 PM* 09 42 14.4162029298 -23 54 56.042043626   5.47 4.94     F9V 233 0
32 HD 85512 PM* 09 51 07.0518026760 -43 30 10.023686079 9.963 8.83 7.651 6.934 6.319 K6Vk: 250 1
33 * ups01 Hya * 09 51 28.6749789221 -14 50 47.863368049 5.68 5.03 4.11 3.42 2.95 G7III 166 0
34 HD 85859 PM* 09 54 12.3168100872 -25 55 56.388156312   6.11 4.88     K2+IIICN0.5 67 0
35 HD 90156 PM* 10 23 55.2740234040 -29 38 43.909986984 7.758 7.603 6.920 6.534 6.189 G5V 163 1
36 HD 96700 PM* 11 07 54.4268592192 -30 10 28.447221745   7.11 6.503 6.59 8.95 G1VFe-0.5 180 1
37 * del Crt PM* 11 19 20.4473515372 -14 46 42.743409457 5.66 4.67 3.56 2.73 2.13 G9IIICH0.5 180 0
38 * ksi Hya ** 11 33 00.1149306166 -31 51 27.447975478 5.17 4.47 3.54 2.84 2.36 G7IIIb 269 0
39 HD 102365 PM* 11 46 31.0725331317 -40 30 01.285867174 5.65 5.55 4.88 4.35 3.97 G2V 378 1
40 HD 102438 PM* 11 47 15.8077477490 -30 17 11.440260481   7.16 6.48     G6V 170 0
41 * bet Vir PM* 11 50 41.7185158616 +01 45 53.001539131 4.26 4.15 3.60 3.13 2.85 F9V 973 0
42 HD 114613 PM* 13 12 03.1842958709 -37 48 10.879928463 5.86 5.55 4.85 4.28 3.92 G3V 231 0
43 * 61 Vir PM* 13 18 24.3139864471 -18 18 40.297748582 5.710 5.440 4.740     G6.5V 742 1
44 * gam Hya SB* 13 18 55.2976891983 -23 10 17.450424894 4.58 3.92 3.00 2.40 1.93 G8IIIa 192 0
45 * pi. Hya PM* 14 06 22.2980035207 -26 40 56.501676257 5.45 4.41 3.28 2.40 1.85 K2-IIIFe-0.5 150 0
46 * alf Cen B PM* 14 39 35.06311 -60 50 15.0992 2.89 2.21 1.33     K1V 1092 2
47 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1352 1
48 * 11 Lib PM* 14 51 01.0720205236 -02 17 56.941059804 6.64 5.92 4.94     K0III/IV 137 0
49 HD 134060 PM* 15 10 44.7430146168 -61 25 20.360681976   6.91 6.285 6.16 8.68 G0VFe+0.4 153 1
50 HD 134606 PM* 15 15 15.0446421648 -70 31 10.644909780   7.61 6.854 6.69 8.89 G6IV 108 1
51 * nu.02 Lup PM* 15 21 48.1499105161 -48 19 03.469906910 6.35 6.30 5.65     G2-V 354 1
52 HD 136713 PM* 15 22 36.6949853712 -10 39 40.055679252 9.766 8.932 7.942 7.402 6.949 K2V 106 0
53 HD 144585 PM* 16 07 03.3696573456 -14 04 16.671141984 7.22 6.98 6.32     G2V 211 0
54 * gam Aps PM* 16 33 27.0825153352 -78 53 49.733407072   4.783 3.854     G8III 102 0
55 HD 154962 PM* 17 08 54.5197946472 -03 52 58.785698676   7.053 6.356     G8IV(+A) 86 0
56 * mu. Ara PM* 17 44 08.7031414872 -51 50 02.591603160   5.85 5.15     G3IV-V 578 2
57 HD 162396 PM* 17 52 52.5830170920 -41 59 47.486766588   6.74 6.20     F9VFe-0.7CH-0.4 142 0
58 HD 171990 PM* 18 47 49.1318977536 -77 52 05.703216132   6.974 6.392     F8V 93 0
59 HD 176986 PM* 19 03 05.8729653768 -11 02 38.130757620   9.39 8.45     K2.5V 81 0
60 HD 179949 BY* 19 15 33.2300695008 -24 10 45.671448072   6.772 6.237     F8V 435 1
61 * del Pav PM* 20 08 43.6088716052 -66 10 55.442769229 4.78 4.32 3.56 2.95 2.61 G8IV 422 0
62 HD 207129 PM* 21 48 15.7511634187 -47 18 13.017893348   6.18 5.58     G2V 357 0
63 * eps Ind PM* 22 03 21.6536261624 -56 47 09.522795714   5.75 4.69     K5V 616 0
64 HD 210918 PM* 22 14 38.6528791223 -41 22 53.994495360 7.02 6.88 6.23     G2V 217 0
65 HD 215456 PM* 22 46 08.0342516928 -48 58 43.758224148   7.25 6.62 6.86 8.66 G0.5V 110 1
66 HD 221420 * 23 33 19.5789042168 -77 23 07.194545808   6.488 5.806     G2IV-V 133 0

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