2013A&A...554A..29D

Query : 2013A&A...554A..29D

2013A&A...554A..29D - Astronomy and Astrophysics, volume 554A29-29 (2013/6-1)

The GAPS programme with HARPS-N at TNG. II. No giant planets around the metal-poor star HIP 11952.

DESIDERA S., SOZZETTI A., BONOMO A.S., GRATTON R., PORETTI E., CLAUDI R., LATHAM D.W., AFFER L., COSENTINO R., DAMASSO M., ESPOSITO M., GIACOBBE P., MALAVOLTA L., NASCIMBENI V., PIOTTO G., RAINER M., SCARDIA M., SCHMID V.S., LANZA A.F., MICELA G., PAGANO I., BEDIN L.R., BIAZZO K., BORSA F., CAROLO E., COVINO E., FAEDI F., HEBRARD G., LOVIS C., MAGGIO A., MANCINI L., MARZARI F., MESSINA S., MOLINARI E., MUNARI U., PEPE F., SANTOS N., SCANDARIATO G., SHKOLNIK E. and SOUTHWORTH J.

Abstract (from CDS):

In the context of the programme Global Architecture of Planetary Systems (GAPS), we have performed radial velocity monitoring of the metal-poor star HIP 11952 on 35 nights during about 150 days using the newly installed high-resolution spectrograph HARPS-N at the TNG and HARPS at the ESO 3.6 m telescope. The radial velocities show a scatter of 7m/s, compatible with the measurement errors for such a moderately warm metal-poor star (Teff=6040±120K; [Fe/H]=-1.9±0.1). We exclude the presence of the two giant planets with periods of 6.95±0.01 d and 290.0±16.2 d and radial velocity semi-amplitudes of 100.3±19.4m/s and 105.2±14.7m/s, respectively, which have recently been announced. This result is important because HIP 11952 was thought to be the most metal-poor star hosting a planetary system with giant planets, which challenged some models of planet formation.

Abstract Copyright: ∼

Journal keyword(s): stars: individual: HIP 11952 - techniques: radial velocities - planetary systems

Simbad objects: 2

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Number of rows : 2
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 16031 PM* 02 34 11.0485653360 -12 23 03.444110700 9.99 10.21 9.77     F0V 179 1
2 CD-36 1052 HB* 02 47 37.4429774568 -36 06 27.032483376   10.426 9.982 9.818 9.37 Fwl 79 1

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