2009A&A...507.1659G


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.27CET05:00:39

2009A&A...507.1659G - Astronomy and Astrophysics, volume 507, 1659-1665 (2009/12-1)

A substellar component orbiting the F-star 30 Arietis B.

GUENTHER E.W., HARTMANN M., ESPOSITO M., HATZES A.P., CUSANO F. and GANDOLFI D.

Abstract (from CDS):

Most current radial velocity planet search programs have concentrated on stars of one solar mass. Our knowledge on the frequency of giant planets and brown dwarf companions to more massive stars is thus rather limited. In the case of solar-like stars, the frequency of short-period brown dwarf companions and very massive planets seems to be low. Here we present evidence for a substellar companion to 30 Ari B, an F-star of 1.16±0.04M that is a member of a hierarchical triple system. The companion was detected by means of precise radial velocity measurements using the 2-m Alfred-Jensch telescope and its echelle spectrograph. An iodine absorption cell provided the wavelength reference for precise stellar radial velocity measurements. We analyzed our radial velocity measurements and derived an orbit to the companion with period, P=335.1±2.5days, eccentricity e=0.289±0.092, and mass function f(m)=(6.1 ±1.7)x10–7M. We conclude that the radial velocity variations of 30 Ari B are due to a companion with msin i of 9.88±0.94MJup that is either a massive planet or a brown dwarf. The object thus belongs to the rare class of massive planets and brown dwarfs orbiting main- sequence stars.

Abstract Copyright:

Journal keyword(s): stars: individual: 30 Arietis B - stars: low-mass, brown dwarfs - planetary systems - techniques: radial velocities

VizieR on-line data: <Available at CDS (J/A+A/507/1659): rv30arb.dat>

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 - 2021
#notes
1 * 30 Ari Bb Pl 02 36 57.7448892346 +24 38 53.002647458           ~ 16 1
2 * 30 Ari B PM* 02 36 57.7448892346 +24 38 53.002647458   7.59 7.09     F6V 124 1
3 * 30 Ari A SB* 02 37 00.5234754968 +24 38 49.988022934   6.86 6.48     F5V 90 0
4 HD 33564b Pl 05 22 33.5290089287 +79 13 52.142657543           ~ 21 1
5 HD 33564 PM* 05 22 33.5290089287 +79 13 52.142657543       4.8   F7V 153 1
6 * 59 Dra PM* 19 09 09.8793494721 +76 33 37.808283506   5.400 5.107     A7V 117 1
7 CoRoT-3b Pl 19 28 13.2642482783 +00 07 18.614302248           ~ 119 1
8 V* V391 Peg HS* 22 04 12.1044101613 +26 25 07.820507559   14.41 14.61 15.00   sdB 101 2
9 * gam Cep SB* 23 39 20.9015326708 +77 37 56.505477975 5.190 4.250   2.6   K1III-IVCN1 558 1

    Equat.    Gal    SGal    Ecl

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2021.02.27-05:00:39

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