We report the discovery of two novae in M81 on a co-added 1600-s narrow-band H-alpha CCD image taken with the 2.5-m Isaac Newton Telescope (INT) + WFC at La...
Discovery of very high-energy γ-ray emission from the LBL object BL Lacertae
The low-frequency peaked BL Lac (LBL) object BL Lacertae was observed with the MAGIC telescope from August to December 2005 (22.2 hrs), and from July to...
Discovery of Very Young Free-floating Giant Planets in the σ Orionis Cluster
Via optical and near-infrared imaging we have discovered an extremely red, low-luminosity population of free-floating objects in the young, nearby stellar...
Disentangling the stellar components of the metal-poor Milky Way
Some studies of the Milky Way halo and all studies of the thick disk populations suffer from difficulties cleanly separating out one galactic component from...
Disentangling the Stellar Populations of Fornax Dwarf Spheroidal
We studied the stellar populations of Fornax dwarf spheroidal galaxy using HST/WFPC2 imaging of 7 galaxy fields. Our observations reach the oldest main-sequence...
Disk Survival in the Extremely Massive Association Cygnus OB2
Star formation in massive clusters proceeds under the influence of the intense ionizing flux emitted by OB stars. Among the massive star forming regions in our...