Low Mass Companions for Five Solar-Type Stars from the Magellan Planet Search Program

Abstract

We report low mass companions orbiting five Solar-type stars that have emerged from the Magellan precision Doppler velocity survey, with minimum (Msini) masses ranging from 1.2 to 25 Mjup. These nearby target stars range from mildly metal-poor to metal-rich, and appear to have low chromospheric activity. The companions to the brightest two of these stars have previously been reported from the CORALIE survey. Four of these companions (HD 48265-b, HD 143361-b, HD 28185-b, HD 111232-b) are low-mass Jupiter-like planets in eccentric intermediate and long-period orbits. On the other hand, the companion to HD 43848 appears to be a long period brown dwarf in a very eccentric orbit.

Accepted for publication on ApJ, 26 pages, 10 figures, 7 tables

References in corpus (2)

• Catalog of Nearby Exoplanets
• Two Jupiter-Mass Planets Orbiting HD 154672 and HD 205739

Cited by in corpus (23)

• Search for brown-dwarf companions of stars
• Li depletion in solar analogues with exoplanets: Extending the sample
• Mass constraints on substellar companion candidates from the re-reduced Hipparcos intermediate astrometric data: Nine confirmed planets and two confirmed brown dwarfs
• 3-D selection of 167 sub-stellar companions to nearby stars
• The CORALIE survey for southern extrasolar planets XVII. New and updated long period and massive planets
• First Results from the CHEPS: Exoplanets and the Discovery of an Eccentric Brown Dwarf in the Desert
• New Planetary Systems from the Calan-Hertfordshire Extrasolar Planet Search
• Habitability of Exomoons at the Hill or Tidal Locking Radius
• Astrophysical Insights into Radial Velocity Jitter from an Analysis of 600 Planet-search Stars
• Five Long-period Extrasolar Planets in Eccentric orbits from the Magellan Planet Search Program
• ROPS: A New Search for Habitable Earths in the Southern Sky
• Exploring the realm of scaled Solar System analogs with HARPS
• Joint Constraints on Exoplanetary Orbits from Gaia DR3 and Doppler Data
• The Masses of a Sample of Radial-Velocity Exoplanets with Astrometric Measurements
• The Calan-Hertfordshire Extrasolar Planet Search
• Spectroscopic follow-up of Gaia exoplanet candidates: Impostor binary stars invade the Gaia DR3 astrometric exoplanet candidates
• MagAO Imaging of Long-period Objects (MILO). I. A Benchmark M Dwarf Companion Exciting a Massive Planet around the Sun-like Star HD 7449
• The HARPS search for southern extra-solar planets. XXIV. Companions to HD 85390, HD 90156 and HD 103197: A Neptune analogue and two intermediate mass planets
• Multiplicity of stars with planets in the solar neighbourhood
• A compact multi-planet system around a bright nearby star from the Dispersed Matter Planet Project
• HD 28185 Revisited: An Outer Planet, Instead of a Brown Dwarf, On a Saturn-like Orbit
• Exoplanets Around Red Giants: Distribution and Habitability
• Binary frequency of planet-host stars at wide separations: A new brown dwarf companion to a planet-host star