2003A&A...398L..19S


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.21CET13:20:33

2003A&A...398L..19S - Astronomy and Astrophysics, volume 398, L19-23 (2003/2-1)

Evidence of a sub-stellar companion around HD 47536.

SETIAWAN J., HATZES A.P., VON DER LUEHE O., PASQUINI L., NAEF D., DA SILVA L., UDRY S., QUELOZ D. and GIRARDI L.

Abstract (from CDS):

We report evidence of a low-mass companion around the K1III giant star HD 47536. This star belongs to our sample of 83 subgiant and giant stars studied for their radial velocity variations using the FEROS spectrograph at the 1.52m-ESO telescope on La Silla. We find that the radial velocity of HD 47536 exhibits a periodic variation of about 712 days with a semi-amplitude of 113m/s. These variations are not accompanied by variations in either Ca II emission or in the spectral line shapes. A Keplerian orbit due to a sub-stellar companion is thus the most viable explanation for the radial velocity variation. Assuming a moderate stellar mass of m1=1.1-3.0M we obtain a minimum mass for the companion of m2sini=5.0-9.7MJup, an orbital semi-major axis of 1.6-2.3AU, and an eccentricity of e=0.2.

Abstract Copyright:

Journal keyword(s): stars: late-type - stars: individual: HD 47536 - technique: radial velocities - stars: planetary systems

Simbad objects: 9

goto Full paper

goto View the reference in ADS

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 * tau Cet PM* 01 44 04.0834226 -15 56 14.926552 4.43 4.22 3.50 2.88 2.41 G8V 1068 1
2 * eps Ret PM* 04 16 29.0292136 -59 18 07.761375 6.59 5.52 4.44 3.62 3.08 K2III 209 1
3 * alf Tau LP? 04 35 55.23907 +16 30 33.4885 4.32 2.40 0.86 -0.37 -1.31 K5+III 1168 1
4 HD 47536 PM* 06 37 47.6183014773 -32 20 23.033515609   6.43 5.258     K1III 90 1
5 * bet Gem PM* 07 45 18.94987 +28 01 34.3160 3.00 2.14 1.14 0.39 -0.11 K0IIIb 1038 1
6 * alf Boo RG* 14 15 39.67207 +19 10 56.6730 2.46 1.18 -0.05 -1.03 -1.68 K1.5IIIFe-0.5 2098 0
7 * iot Dra V* 15 24 55.7746265 +58 57 57.834445 5.68 4.45 3.29 2.51 1.91 K2III 366 1
8 HD 164335 * 18 01 59.8787937264 -31 02 33.255680792   10.56 9.56     G8/K0(III) 3 0
9 * gam Cep SB* 23 39 20.9015326708 +77 37 56.505477975 5.190 4.250   2.6   K1III-IVCN1 544 1

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2003A&A...398L..19S and select 'bookmark this link' or equivalent in the popup menu


2019.11.21-13:20:33

© Université de Strasbourg/CNRS

    • Contact