Coronagraphic Search for Extrasolar Planets around ε Eri and Vega

2006/08/17 by Yoichi Itoh, Yumiko Oasa, Misato Fukagawa · 2 citations
Physics and Astronomy · #Adaptive optics #Astro and Planetary Science #Astrobiology #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Coronagraph #Direct imaging #Exoplanet #Optics #Physics #Planet #Planetary system #Stars #Stellar, planetary, and galactic studies #Vega #astro-ph

paper · pdf · doi:10.1086/508420

published as Astrophys.J.652:1729-1733,2006 · ApJ accepted

arxiv created 2006/08/17 · openalex publication_date 2006/11/27 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We present the results of a coronagraphic imaging search for extrasolar planets around the young main-sequence stars 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 secure detection of a point source around the stars. The observations give the upper limits on the masses of the planets to M J and M J at a few arcseconds from Eri and Vega, respectively. Diffuse structures are also not detected around both stars.

Citations

• Evolutionary models for cool brown dwarfs and extrasolar giant planets. The case of HD 209458
• Deep Keck Adaptive Optics Searches for Extrasolar Planets in the Dust of ε Eridani and Vega
• Angular Differential Imaging: A Powerful High‐Contrast Imaging Technique
• Dust in the Photospheric Environment. II. Effect on the Near‐Infrared Spectra of L and T Dwarfs
• A Giant Planet Candidate near a Young Brown Dwarf

Cited by

• Temporal Evolution of Coronagraphic Dynamic Range and Constraints on Companions to Vega
• Coronagraphic search for wide substellar companions among members of the Ursa Major moving group