Embedded Files
Credit: ESO
Quasar (QSO) and its host galaxy
Left: Hubble images of quasar 3C 273. Right: a coronagraph is used to block the quasar's light. Credit: NASA and ESA
Most astronomers believe every QSO is powered by a supermassive black hole (SMBH).
Astronomers have concluded that most, if not all, galaxies host MBHs at their centers.
We do not have enough knowledge about QSO host galaxies at redshift > 6. Due to fact that most of the Lyα emission is absorbed by IGM.
The emission from redshift 6 galaxies is much smaller than that from redshift 6 QSOs. (Mortlock et al. 2015)
The emission from redshift 6 galaxies is much smaller than that from redshift 6 QSOs. (Mortlock et al. 2015)
We obtain 100 high redshift 6 QSOs identified from the SHELLQs All the images were obtained by HSC. Using these QSOs, we can study the relationship of QSOs and their host galaxies.
We obtain 100 high redshift 6 QSOs identified from the SHELLQs All the images were obtained by HSC. Using these QSOs, we can study the relationship of QSOs and their host galaxies.
(Image credit: National Astronomical Observatory of Japan)
Related publications
1. Unveiling QSO host galaxies and their Lyα emission at z∼6 by SHELLQs
Simon C.-C. Ho et al., in prep.
2. Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs) – XV. Constraining the cosmic reionization at 5.5 < z < 7
Ting-Yi Lu, Tomotsugu Goto, Tetsuya Hashimoto, Daryl Joe D Santos, Yi Hang Valerie Wong, Seong Jin Kim, Tiger YY Hsiao, Ece Kilerci, Simon C.-C. Ho et al. 2022, MNRAS, 517, 1
2. Subaru medium-resolution spectra of a QSO at z=6.62: Three ionization tests
Ting-Yi Lu, Tomotsugu Goto, Ji-Jia Tang, Tetsuya Hashimoto, Yi-Hang Valerie Wong, Chia-Ying Chiang, Yi-Han Wu, Seong Jin Kim, Simon C.-C. Ho et al., 2020, ApJ, 893, 69
Page updated
Google Sites
Report abuse