Research Interests

Last Update 2010/08/20

I here show my research interests with related publications (linked to ADS). All the publications are shown in publications.

Object Variability
- Optical variability surveys with wide-field imagers (Subaru/Suprime-Cam and HST/ACS).
  - Morokuma, T., et al. 2008, "The Subaru/XMM-Newton Deep Survey (SXDS). V. Optically Faint Variable Object Survey"
Active Galactic Nuclei (AGN)
- Low-Luminosity AGN selected by optical variability w/ Subaru/Suprime-Cam
  - Morokuma, T., et al. 2008, "The Subaru/XMM-Newton Deep Survey (SXDS). VI. Properties of Active Galactic Nuclei Selected by Optical Variability"
- AGN in galaxy clusters w/ HSC/ACS
- Quasar Host Galaxies
Supernovae w/ Subaru/Suprime-Cam, HST/ACS, and SDSS
- Cosmology
- SN rate
  - Totani, T., Morokuma, T., et al. 2008, "Delay Time Distribution Measurement of Type Ia Supernovae by the Subaru/XMM-Newton Deep Survey and Implications for the Progenitor"
- SN spectra
  - Morokuma, T., Tokita, K., Lidman, C., et al., 2010, PASJ, 62, 19, "Subaru FOCAS Spectroscopic Observations of High-Redshift Supernovae"
- individual SN
  - Barbary, K., ..., Morokuma, T., et al. 2009, "Discovery of AN Unusual Optical Transient with the Hubble Space Telescope"
  - Morokuma, T., et al. 2008, "Supernova 2008hj in MCG -02-1-14"
Gravitational Lensing
- Gravitationally lensed quasars w/ SDSS (SQLS)
  - Morokuma, T., et al. 2007, AJ, 133, 214, "Discovery of a Gravitationally Lensed Quasar from the Sloan Digital Sky Survey: SDSS J133222.62+034739.9"
- Gravitationally lensed galaxies w/ HST/ACS
  - Huang, X., Morokuma, T., et al. 2009, ApJL, 707, 12"Hubble Space Telescope Discovery of a z = 3.9 Multiply Imaged Galaxy Behind the Complex Cluster Lens Warps J1415.1+36 at z = 1.026"
Galactic structure
- High Proper Motion Stars w/ Subaru/Suprime-Cam
  - Richmond, M. W., Morokuma, T., et al. 2009, "Proper motions with Subaru II. A sample in the Subaru/XMM-Newton Deep Survey field"
  - Richmond, M. W., Morokuma, T., et al. 2009, "Proper motions with Subaru I. Methods and a first sample in the Subaru Deep Field"
- RR Lyrae Variable Stars w/ Subaru/Suprime-Cam
Intstrumentation
- Hyper Suprime-Cam (HSC)
  - Morokuma, T., et al. 2008, SPIE, "Hyper Suprime-Cam: autoguider and Shack-Hartmann systems"
- Wide-field Imaging Surveyor for High-redshift (WISH)
- Dichroic Mirror Camera (DMC)
  - Doi, M., Hayano, J., ..., Morokuma, T., et al. 2008, SPIE, "First light of UT 15-band dichroic-mirror camera"