High-contrast H$\hat{I}\pm$ imaging with Subaru/SCExAO+VAMPIRES

Abstract

We present current status of H$\hat{I}\pm$ 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 H$\hat{I}\pm$ 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 $\sim 10^{-3}-5\times 10^{-4}$ at $0.3^{\prime \prime }$, which is comparable to other H$\hat{I}\pm$ high-contrast imaging instruments in the southern hemisphere such as VLT/SPHERE, VLT/MUSE, and MagAO. Subaru/VAMPIRES provides great opportunities for H$\hat{I}\pm$ high-contrast imaging for northern hemisphere targets.

30 pages, 14 figures, accepted for publication in JATIS