4 papers
Properties of Circum(sub)stellar Accretion Disks
Michael C. Liu, Alan T. Tokunaga, Joan Najita
We have completed a systematic survey for disks around young brown dwarfs and very low mass stars. By choosing a well-defined sample and by obtaining sensitive thermal IR observati…
Disks around Young Brown Dwarfs
Michael C. Liu
We present some results from a systematic survey for disks around spectroscopically identified young brown dwarfs and very low mass stars. We find that ~75% of our sample show intr…
Extremely Red Objects in the Field of QSO 1213-0017: A Galaxy Concentration at z=1.31
Michael C. Liu, Arjun Dey, James R. Graham +2
We have discovered an excess of extremely red objects (EROs) surrounding the z=2.69 quasar QSO 1213-0017 (UM 485). Optical/IR colors for these galaxies are consistent with z=1-2 el…
Stellar Populations of Elliptical Galaxies from Surface Brightness Fluctuations
Michael C. Liu, Stephane Charlot, James R. Graham
We are using optical/IR surface brightness fluctuations (SBFs) to validate the latest stellar population synthesis models and to understand the stellar populations of ellipticals.…