2005ApJ...632..638V


C.D.S. - SIMBAD4 rel 1.7 - 2020.12.04CET17:43:30

2005ApJ...632..638V - Astrophys. J., 632, 638-658 (2005/October-2)

Five new multicomponent planetary systems.

VOGT S.S., BUTLER R.P., MARCY G.W., FISCHER D.A., HENRY G.W., LAUGHLIN G., WRIGHT J.T. and JOHNSON J.A.

Abstract (from CDS):

We report Doppler measurements for six nearby G- and K-type main-sequence stars that show multiple low-mass companions, at least one of which has planetary mass. One system has three planets, the fourth triple-planet system known around a normal star, and another has an extremely low minimum mass of 18 M. HD 128311 (K0 V) has two planets (one previously known) with minimum masses (Msini) of 2.18MJand 3.21MJand orbital periods of 1.26 and 2.54 yr, suggesting a possible 2:1 resonance. For HD 108874 (G5 V), the velocities reveal two planets (one previously known) having minimum masses and periods of (Msinib=1.36MJ, Pb=1.08 yr) and (Msinic=1.02MJ, Pc=4.4 yr). HD 50499 (G1 V) has a planet with P=6.8 yr and Msini=1.7MJ, and the velocity residuals exhibit a trend of -4.8 m/s/yr, indicating a more distant companion with P>10 yr and minimum mass of 2MJ. HD 37124 (G4 IV-V) has three planets, one having Msini=0.61MJand P=154.5 days, as previously known. We find two plausible triple-planet models that fit the data, both having a second planet near P=840 days, with the more likely model having its third planet in a 6 yr orbit and the other one in a 29 day orbit. For HD 190360, we confirm the planet having P=7.9 yr and Msini=1.5MJas found by the Geneva team, but we find a distinctly noncircular orbit with e=0.36±0.03, rendering this not an analog of Jupiter as had been reported. Our velocities also reveal a second planet with P=17.1 days and Msini=18.1 M. HD 217107 (G8 IV) has a previously known ``hot Jupiter'' with Msini=1.4MJand P=7.13 days, and we confirm its high eccentricity, e=0.13. The velocity residuals reveal an outer companion in an eccentric orbit, having minimum mass of Msini>2MJ, eccentricity e∼0.5, and a period P>8 yr, implying a semimajor axis a>4 AU and providing an opportunity for direct detection. We have obtained high-precision photometry of five of the six planetary host stars with three of the automated telescopes at Fairborn Observatory. We can rule out significant brightness variations in phase with the radial velocities in most cases, thus supporting planetary reflex motion as the cause of the velocity variations. Transits are ruled out to very shallow limits for HD 217107 and are also shown to be unlikely for the prospective inner planets of the HD 37124 and HD 108874 systems. HD 128311 is photometrically variable with an amplitude of 0.03 mag and a period of 11.53 days, which is much shorter than the orbital periods of its two planetary companions. This rotation period explains the origin of periodic velocity residuals to the two-planet model of this star. All of the planetary systems here would be further constrained with astrometry by the Space Interferometry Mission.

Abstract Copyright:

Journal keyword(s): Stars: Planetary Systems - Stars: Individual: Henry Draper Number: HD 128311 - Stars: Individual: Henry Draper Number: HD 108874 - Stars: Individual: Henry Draper Number: HD 217107 - stars: individual (HD 50499) - Stars: Individual: Henry Draper Number: HD 37124 - stars: individual (HD 190360)

Simbad objects: 37

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Number of rows : 37

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 HD 4256 PM* 00 45 04.8938277262 +01 47 07.876998648 9.939 9.021 8.001 7.44 6.976 K3V 106 0
2 * ups And PM* 01 36 47.84216 +41 24 19.6443 4.70 4.64 4.10 3.64 3.35 F9V 895 1
3 HD 12661 PM* 02 04 34.2883519451 +25 24 51.514208219   8.16   7.0   K0V 235 1
4 HD 37124b Pl 05 37 02.4866790656 +20 43 50.834619370           ~ 63 1
5 HD 37124 PM* 05 37 02.4866790656 +20 43 50.834619370   8.35   7.2   G4IV-V 269 2
6 HD 37124c Pl 05 37 02.4866790656 +20 43 50.834619370           ~ 53 1
7 HD 37124d Pl 05 37 02.4866790656 +20 43 50.834619370           ~ 36 1
8 HD 37466 * 05 39 51.4933055232 +24 13 31.682187603 7.420 7.480 7.120     F3V 27 0
9 HD 38529 PM* 05 46 34.9129896843 +01 10 05.512540812       5.4   G8III/IV 312 2
10 HD 47946 PM* 06 39 42.6608189662 -30 28 13.766461746   6.85 5.71     K1III 17 0
11 HD 50499 PM* 06 52 02.0243202297 -33 54 56.016399083   7.82 7.20     G0/2V 86 1
12 HD 50499b Pl 06 52 02.0243202297 -33 54 56.016399083           ~ 24 1
13 * rho01 Cnc PM* 08 52 35.8113282132 +28 19 50.956901366 7.45 6.82   5.4   K0IV-V 983 1
14 HD 82943 PM* 09 34 50.7352288445 -12 07 46.363303103   7.17 6.53     F9VFe+0.5 412 2
15 HD 90158 * 10 23 31.2647043848 -43 16 19.151330868   9.18 9.05     A2V 3 0
16 HD 97343 PM* 11 12 01.1914520663 -26 08 12.005568011 8.178 7.815 7.037 6.621 6.241 G8.5V 103 0
17 HD 108874c Pl 12 30 26.8817523074 +22 52 47.380606770           ~ 31 1
18 HD 108874b Pl 12 30 26.8817523074 +22 52 47.380606770           ~ 42 1
19 HD 108874 PM* 12 30 26.8817523074 +22 52 47.380606770   9.49   8.3   G9V 142 1
20 HD 109031 PM* 12 31 33.7214517343 +21 34 36.632060526   8.29 7.89     F3 33 0
21 * 70 Vir PM* 13 28 25.8081883620 +13 46 43.642951116 5.930 5.680 4.970 4.37 3.98 G4Va 675 1
22 HD 127247 * 14 30 08.3837789279 +08 21 11.487920139   7.93 7.40     F2 16 0
23 HD 128311c Pl 14 36 00.5607343227 +09 44 47.453643485           ~ 48 1
24 HD 128311 BY* 14 36 00.5607343227 +09 44 47.453643485 9.232 8.441 7.446 6.895 6.425 K3V 273 1
25 HD 128311b Pl 14 36 00.5607343227 +09 44 47.453643485           ~ 61 1
26 * 14 Her PM* 16 10 24.3152754550 +43 49 03.498734567   7.57   6.1   K0V 410 1
27 HD 151541 PM* 16 42 38.5768818637 +68 06 07.792148115   8.32   7.1   K1 112 0
28 * mu. Ara PM* 17 44 08.7036342277 -51 50 02.591049123   5.85 5.15     G3IV-V 473 2
29 HD 190360b Pl 20 03 37.4049065078 +29 53 48.495330996           ~ 47 1
30 HD 190360c Pl 20 03 37.4049065078 +29 53 48.495330996           ~ 42 1
31 HD 190360 PM* 20 03 37.4049065078 +29 53 48.495330996   6.44   5.2   G7IV-V 394 1
32 HD 202206 PM* 21 14 57.7684954746 -20 47 21.162361638   8.79 8.07     G6V 197 1
33 BD-15 6290 BY* 22 53 16.7323107416 -14 15 49.303409936 12.928 11.749 10.192 9.013 7.462 M3.5V 866 1
34 HD 217107 ** 22 58 15.5411942071 -02 23 43.387117210   6.919 6.163     G8IV/V 335 1
35 HD 217107b Pl 22 58 15.5411942071 -02 23 43.387117210           ~ 82 1
36 HD 217107c Pl 22 58 15.5411942071 -02 23 43.387117210           ~ 50 1
37 HD 217131 PM* 22 58 23.6609730278 -01 24 36.748903356   6.711 6.374     F2V 42 0

    Equat.    Gal    SGal    Ecl

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2020.12.04-17:43:30

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