H band Image of a Planetary Companion around HR 8799 in 2002

Abstract

The discovery of three planetary companions around HR 8799 (Marois et al. 2008) marked a significant epoch in direct imaging of extrasolar planets. Given the importance of this system, we re-analyzed H band images of HR 8799 obtained with the Subaru 36-elements adaptive optics (AO) in July 2002. The low-order AO imaging combined with the classical PSF-subtraction methods even revealed the extrasolar planet, HR 8799b. Our observations in 2002 confirmed that it has been orbiting HR 8799 in a counter-clockwise direction. The flux of HR 8799b was consistent with those in the later epochs within the uncertainty of 0.25 mag, further supporting the planetary mass estimate by Marois et al. (2008).

14 pages, 4 figures, accepted for publication in ApJ Letter

References in corpus (4)

• Direct Imaging of Multiple Planets Orbiting the Star HR 8799
• Optical Images of an Exosolar Planet 25 Light Years from Earth
• Detection of Thermal Emission from an Extrasolar Planet
• Direct Imaging and Spectroscopy of a Planetary Mass Candidate Companion to a Young Solar Analog

Cited by in corpus (22)

• Imaging Extrasolar Giant Planets
• A Combined Subaru/VLT/MMT 1--5 Micron Study of Planets Orbiting HR 8799: Implications for Atmospheric Properties, Masses, and Formation
• Near-Infrared Spectroscopy of the Extrasolar Planet HR 8799 b
• First light of the VLT planet finder SPHERE. III. New spectrophotometry and astrometry of the HR8799 exoplanetary system
• Debris Disks: Seeing Dust, Thinking of Planetesimals and Planets
• Direct Imaging Confirmation and Characterization of a Dust-Enshrouded Candidate Exoplanet Orbiting Fomalhaut
• Atmospheric Retrieval Analysis of the Directly Imaged Exoplanet HR 8799b
• Multiple mean motion resonances in the HR 8799 planetary system
• Astrometric Monitoring of the HR 8799 Planets: Orbit Constraints from Self-Consistent Measurements
• VLT/SPHERE robust astrometry of the HR8799 planets at milliarcsecond-level accuracy Orbital architecture analysis with PyAstrOFit
• LBT observations of the HR 8799 planetary system: First detection of HR8799e in H band
• A possible architecture of the planetary system HR 8799
• The LEECH Exoplanet Imaging Survey. Further constraints on the planet architecture of the HR 8799 system
• Direct Detection and Orbit Analysis of the Exoplanets HR 8799 bcd from Archival 2005 Keck/NIRC2 Data
• Four-of-a-kind? Comprehensive atmospheric characterisation of the HR 8799 planets with VLTI/GRAVITY
• Secular Orbital Dynamics of Hierarchical Two Planet Systems
• Pre-Discovery 2007 Image of the HR 8799 Planetary System
• Orbital and dynamical analysis of the system around HR 8799. New astrometric epochs from VLT/SPHERE and LBT/LUCI
• A Search for Wide Companions to the Extrasolar Planetary System HR 8799
• VLT/NACO astrometry of the HR8799 planetary system. L'-band observations of the three outer planets
• JWST-TST High Contrast: Living on the Wedge, or, NIRCam Bar Coronagraphy Reveals CO${}_2$ in the HR 8799 and 51 Eri Exoplanets' Atmospheres
• Modelling the Inner Debris Disc of HR 8799