2020/08/25 by Taichi Uyama, Uyama, Taichi, Barnaby Norris +17
Earth and Planetary Sciences · Physics and Astronomy · #Adaptive optics and wavefront sensing #Earth and Planetary Astrophysics (astro-ph.EP) #FOS: Physical sciences #Gamma-ray bursts and supernovae #Geophysics and Gravity Measurements #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Solar and Stellar Astrophysics (astro-ph.SR) #Stellar, planetary, and galactic studies
paper · pdf · doi:10.48550/arxiv.2008.10780
openalex publication_date 2020/08/25 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28
We present current status of Hα high-contrast imaging observations with Subaru/SCExAO+VAMPIRES. Our adaptive optics correction at optical wavelengths in combination with (double) spectral differential imaging (SDI) and angular differential imaging (ADI) was capable of detecting a ring-like feature around omi Cet and the Hα counterpart of jet around RY Tau. We tested the post-processing by changing the order of ADI and SDI and both of the contrast limits achieved ∼10-3-5×10-4 at 0.3′′, which is comparable to other Hα high-contrast imaging instruments in the southern hemisphere such as VLT/SPHERE, VLT/MUSE, and MagAO. Subaru/VAMPIRES provides great opportunities for Hα high-contrast imaging for northern hemisphere targets.