Coronagraphic Search for Extra-Solar Planets around epsilon Eri and Vega

Abstract

We present the results of a coronagraphic imaging search for extra-solar planets around the young main-sequence stars, epsilon Eri and Vega. Concentrating the stellar light into the core of the point spread function by the adaptive optic system and blocking the core by the occulting mask in the coronagraph, we have achieved the highest sensitivity for point sources in close vicinity of the both central stars. Nonetheless we had no confidential detection of a point source around the stars. The observations give the upper limits on the masses of the planets to 4 -- 6 Jupiter mass and 5 -- 10 Jupiter mass at a few arcsecond from epsilon Eri and Vega, respectively. Diffuse structures are also not detected around both stars.

arXiv commentApJ accepted

References in corpus (16)

• Evolutionary models for cool brown dwarfs and extrasolar giant planets. The case of HD 20945
• Angular Differential Imaging: a Powerful High-Contrast Imaging Technique
• A Giant Planet Candidate near a Young Brown Dwarf
• A dust ring around Epsilon Eridani: analogue to the young Solar System
• Evidence for a Long-period Planet Orbiting Epsilon Eridani
• Evidence for a co-moving sub-stellar companion of GQ Lup
• Resonant Trapping of Planetesimals by Planet Migration: Debris Disk Clumps and Vega's Similarity to the Solar System
• Structure in the Dusty Debris around Vega
• Structure in the Epislon Eridani dusty disk caused by mean motion resonances with a 0.3 eccentricity planet at periastron
• A Young Brown Dwarf Companion to DH Tauri
• Millimeter-Wave Aperture Synthesis Imaging of Vega: Evidence for a Ring Arc at 95 AU
• Ages of late spectral type Vega-like stars
• Dust in the Photospheric Environment II. Effect on the Near Infrared Spectra of L and T Dwarfs
• Deep Keck adaptive optics searches for extrasolar planets in the dust of Epsilon Eridani and Vega
• Adaptive Optics Observations of Vega: Eight Detected Sources and Upper Limits to Planetary-Mass Companions
• Limits on the Optical Brightness of the Epsilon Eridani Dust Ring

Cited by in corpus (15)

• Imaging Extrasolar Giant Planets
• Debris Disks: Seeing Dust, Thinking of Planetesimals and Planets
• Temporal Evolution of Coronagraphic Dynamic Range, and Constraints on Companions to Vega
• High-Contrast Observations in Optical and Infrared Astronomy
• Scattering of small bodies by planets: a potential origin for exozodiacal dust ?
• The cold origin of the warm dust around epsilon Eridani
• Spitzer/IRAC Limits to Planetary Companions of Fomalhaut and epsilon Eridani
• Vega's hot dust from icy planetesimals scattered inward by an outward-migrating planetary system
• q1 Eri: a solar-type star with a planet and a dust belt
• Comparative Lyot Coronagraphy with Extreme AO Systems
• Deep L' and M-band Imaging for Planets Around Vega and epsilon Eridani
• Reference-less detection, astrometry, and photometry of faint companions with adaptive optics
• Detection of faint companions through stochastic speckle discrimination
• On-Sky Demonstration of a Linear Band-limited Mask with Application to Visual Binary Stars
• A coronagraphic search for wide sub-stellar companions among members of the Ursa Major moving group