Title: Doppler Planet Searches with Subaru/HDS
Author(s): Bun'ei Sato
Abstract:
Precise measurements of stellar radial velocity variations are powerful
technique to find extrasolar planets orbiting stars.
We have been conducting two planet search projects with this technique
using the High Dispersion Spectrograph (HDS) of Subaru and an iodine
absorption cell. The first one is a search for Hot-Jupiters around
metal-rich solar-type stars in collaboration with US astronomers. From
this project, we have discovered three planets so far, two of which
are transiting planets. The second one is a search for planets around
intermediate-mass giant stars aiming to understand dependence of properties
of planets on stellar mass. Several promising candidate stars harboring
planets begin to emerge from this project and they are now under follow-up
observations using 2m-class telescopes in East-Asia (China, Korea, Japan).
We here introduce the outlines of these projects and report the current
status.

This gap is indicative of some acceleration of matter