2000A&A...361..265S

Query : 2000A&A...361..265S

2000A&A...361..265S - Astronomy and Astrophysics, volume 361265-272 (2000/9-1)

The CORALIE survey for Southern extra-solar planets. IV. Intrinsic stellar limitations to planet searches with radial-velocity techniques.

SANTOS N.C., MAYOR M., NAEF D., PEPE F., QUELOZ D., UDRY S. and BLECHA A.

Abstract (from CDS):

Activity related phenomena can induce radial-velocity variations, which can be very important when dealing with extra-solar planet search programmes requiring high-precision radial-velocity measurements. In this paper we present a new chromospheric activity index, SCOR, based on the CaII H line central reemission, and constructed using CORALIE spectra. After one year of measurements, values of SCOR are available for a sub-sample of stars of the Geneva extra-solar planet search programme. After transforming the SCOR values into the Mount-Wilson ``S'' scale we obtained values of the CaII H and K flux corrected from photospheric emission (R'HK) for the stars. The first results are presented, and in particular we focus on the study of the relation between the observed radial-velocity scatter and the chromospheric activity index R'HK, for F, G and K dwarfs.

Abstract Copyright: ∼

Journal keyword(s): techniques: radial velocities - stars: planetary systems - stars: activity - stars: starspots

Simbad objects: 24

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Number of rows : 24
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 * 9 Cet BY* 00 22 51.7884553555 -12 12 33.969921319 7.29 7.05 6.39     G2.5V 510 0
2 HD 3443 SB* 00 37 20.71960 -24 46 02.1843           K1V+G 251 0
3 HD 3795 SB* 00 40 32.7939851012 -23 48 17.728718238   6.84 6.14     K0VFe-1.5CH-1.3 227 0
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 HD 17925 RS* 02 52 32.1281856011 -12 46 10.968056223 7.48 6.91 6.05 5.34 4.89 K1V 557 0
6 * eps Eri BY* 03 32 55.8444911587 -09 27 29.739493865 5.19 4.61 3.73 3.00 2.54 K2V 2073 1
7 * 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
8 * omi02 Eri PM* 04 15 16.3196189945 -07 39 10.330779018 5.69 5.25 4.43 3.74 3.29 K0V 879 0
9 * 58 Eri BY* 04 47 36.2917029384 -16 56 04.040472552   6.14 5.50     G2.5IV-V 466 0
10 HD 45067 PM* 06 25 16.5462760045 -00 56 45.178443827   6.43 5.90     F9V 217 0
11 HD 55720 PM* 07 11 31.6674204568 -49 25 27.136633751   8.24 7.47     G8V 88 0
12 * 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
13 V* CT Pyx BY* 08 37 15.5383245984 -17 29 40.752023820   9.58 8.74     K1V 50 0
14 HD 76151 PM* 08 54 17.9470964696 -05 26 04.054298491 6.89 6.67 6.00     G2V 580 0
15 HD 81809 ** 09 27 46.8088908054 -06 04 17.008787302           G1.5IV-V 322 0
16 * 61 Vir PM* 13 18 24.3139864471 -18 18 40.297748582 5.710 5.440 4.740     G6.5V 742 1
17 HD 130322 PM* 14 47 32.7262287384 -00 16 53.307811560   8.82 8.04     K0V 303 1
18 HD 130322b Pl 14 47 32.7262287384 -00 16 53.307811560           ~ 67 1
19 * 12 Oph BY* 16 36 21.4496896968 -02 19 28.513024233 7.00 6.55 5.77 5.13 4.74 K1V 525 0
20 HD 152391 PM* 16 52 58.8025159848 -00 01 35.118396116   7.40 6.64     G8.5Vk: 396 0
21 * 36 Oph B PM* 17 15 20.9838262152 -26 36 10.173444860   5.88 5.03     K1V 264 1
22 HD 158614 SB* 17 30 23.79699 -01 03 46.4882 6.34     5.52   G9-IV-VHdel1 307 0
23 HD 192263b Pl 20 13 59.8455790536 -00 52 00.769626768           ~ 68 1
24 HD 192263 BY* 20 13 59.8455790536 -00 52 00.769626768 9.447 8.724 7.767 7.231 6.771 K1/2V 270 1

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