Finding Obscured Galaxies/Black Holes from the James Webb Space Telescope COSMOS-Web Data
後藤友嗣 Tomo Goto (NTHU)
※Keywords:
JWST, Black Hole, Galaxies
※Description:
It has been an unanswered question that how many dusty galaxies have been undetected from the state-of-the-art observational surveys. Most faint dusty galaxies have been beyond the reach of the previous space infrared telescopes such as Spitzer (85 cm), and AKARI (65 cm). With the advent of the 6.5m James Webb Space Telescope (JWST), a revolution is happening. With 100 times better sensitivity of the 6.5m telescope than AKARI and Spitzer, we now can reveal previously undetected faint infrared sources. Polycyclic aromatic hydrocarbon (PAH) is a valuable tracer of star formation and dust properties in the mid-infrared wavelength. Active galactic nuclei have characteristic emission in the mid-infrared due to the high-temperature of the warm dust. The JWST COSMOS-Web fields provide us with a 20 times larger area coverage than the early release observations. Using the JWST multi-band photometry catalogue we identify such galaxies and black holes, previously unseen with any other telescopes.
※Required Background:
Motivation for research