|Radio astronomy is a field that astronomers receive and analyse radio emission coming from celestial object in order to understand physical properties of the objects. One uses a radio telescope or radio telescope arrays to receive radio emission from the Universe. Radio telescopes use the devices that allow us to receive radio waves from the Universe with high sensitivity and astronomers record the radio waves on a hard drives as astronomical data to analyse them. We use data recorded with the VERA telescopes, the Nobeyama 45-m telescope, other sensitive telescopes around the world. Our laboratory deeply involved in the operation of one of the the VERA telescope, owned by the National Astronomical Observatory of Japan (NAOJ), stationed at Iriki, Kagoshima.|
Infrared astronomy is a field that received infrared radiation radiated
from astronomical objects in order to understand the nature of the objects.
Astronomers use infrared telescopes for the purpose.
Infrared telescopes receives infrared radiation from the Universe and record the data. We use our 1-m diameter infrared telescope at Iriki, Kagoshima, the IRSF telescope in South Africa operated by the astronomy group at Nagoya University, and other infrared telescopes on the ground and those in the space.
|Courtesy of the 4D2U project at NAOJ|
The Milky Way Galaxy is the galaxy that our solar system belongs to.
A part of it is sean as the Milky Way in the night sky.
The Milky Way consists of hundreds of billion of stars and many nebulae.
We investigate their physical properties of these objects and the interactions between them.
What is Star Forming Regions?Stars form owning to gravitational collapse of interstellar medium. On the processes, proto-stars generate jets, and sometimes they emit strong radio/X ray radiation.
Orion nebula and Taurus Molecular Cloud are two famous star forming retions. There are many other star forming regions. Some of them show similar properties, while some others show different nature. We observe these regions using different techniques in order to understand the processes of star formation
What is a Variable Star?Red giants are the stars of end state that solar-type stars becomes to at the end of their lives. It is known that these stars becomes variables whose brightness peroiodically changes in cycles over ten days or more. These evolved stars are categolized based on pulsation periods/patterns.
These stars are losing their masses with significant amounts, and often times they show strong masers (microwave amplification by stimulated emission of radiation).