2007A&A...466.1179E


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.05CEST06:06:57

2007A&A...466.1179E - Astronomy and Astrophysics, volume 466, 1179-1183 (2007/5-2)

No evidence of a hot Jupiter around HD 188753A.

EGGENBERGER A., UDRY S., MAZEH T., SEGAL Y. and MAYOR M.

Abstract (from CDS):

The discovery of a short-period giant planet (a hot Jupiter) around the primary component of the triple star system HD 188753 has often been considered as an important observational evidence and as a serious challenge to planet-formation theories. Following this discovery, we monitored HD 188753 during one year to better characterize the planetary orbit and the feasibility of planet searches in close binaries and multiple star systems. We obtained Doppler measurements of HD 188753 with the ELODIE spectrograph at the Observatoire de Haute-Provence. We then extracted radial velocities for the two brightest components of the system using our multi-order, two-dimensional correlation algorithm, TODCOR. Our observations and analysis do not confirm the existence of the short-period giant planet previously reported around HD 188753A. Monte Carlo simulations show that we had both the precision and the temporal sampling required to detect a planetary signal like the one quoted. From our failure to detect the presumed planet around HD 188753A and from the available data on HD 188753, we conclude that there is currently no convincing evidence of a close-in giant planet around HD 188753A.

Abstract Copyright:

Journal keyword(s): techniques: radial velocities - stars: binaries: spectroscopic - stars: individual: HD 188753 - stars: planetary systems

Simbad objects: 9

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Number of rows : 9

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 224752 PM* 00 00 27.1507913878 -79 03 43.136249179   9.40 8.61     G6V 21 0
2 HD 225208 PM* 00 04 24.8802157136 -47 04 04.957771852   10.66 9.80     K0V 13 0
3 HD 13445 PM* 02 10 25.9190575041 -50 49 25.467227759   6.94 6.17     K1.5V 414 2
4 HD 41004 ** 05 59 49.6473573887 -48 14 22.805780232   9.49 8.65     K1IV 151 1
5 HD 188753 ** 19 54 58.3717655 +41 52 17.529759   8.22   6.9   G9V 122 1
6 HD 188753A SB* 19 54 58.4 +41 52 17   8.2 7.4     ~ 20 1
7 HD 188753B * 19 54 58.4 +41 52 17   8.4 8.72     ~ 21 0
8 HD 188753Ab Pl? 19 54 58.4 +41 52 17           ~ 12 1
9 * gam Cep SB* 23 39 20.9015326708 +77 37 56.505477975 5.190 4.250   2.6   K1III-IVCN1 547 1

    Equat.    Gal    SGal    Ecl

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2020.07.05-06:06:57

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