The GMOS South spectra were taken in the nod-and-shuffle mode, necessary to measure the weak residual flux at wavelengths shorter than the Lyman emission line in order to determine the absorption by neutral hydrogen.
An international team of researchers has shown that quasar pairs may be excellent beacons for finding clusters of galaxies in the early universe.
By observing the comet Tempel 1 pre-, and post-impact, the Harker team gathered baseline data sets with MICHELLE on Gemini North to compare with data obtained during the moments surrounding impact.
A team used the adaptive optics fed integral-field spectrograph NIFS on Gemini North to explore the inner structure of the jet in the young star HL Tau, located about 460 light years away in the constellation of Taurus.
Deep Gemini imaging of the cluster of galaxies Hydra I at a distance of 176 million light-years has revealed an abundance of massive luminous metal-rich globular clusters that appears to impersonate ultra-compact dwarf galaxies.
The six distant quasars a team observed are at redshifts ranging between z = 5.8 to 6.3 and correspond to a period when the universe was only about one billion years old. Using GNIRS at Gemini South and NIRI at Gemini North, the team found these very young quasars to be already super-enriched in heavy elements.
NIRI observations with AO showed evidence of frigid geysers spewing material up through cracks in the crust of Pluto's companion Charon and recoating parts of its surface in ice crystals.
During a search for hydrogen emission in the disks of young stars, UK astronomers have discovered a massive layer of hot gas around a low-mass M3-type star in the 6 million-year-old Eta Chamaeleontis cluster.
Amidst the stunning beauty of the Foz do Iguaçu park and waterfalls in Brazil, more than 130 astronomers and staff from the seven-country Gemini partnership converged during the week of June 11th, 2007.
The coolest-known star-like object, called ULAS J0034-00 and located in the constellation Cetus, has a record-setting surface temperature of 600-700 K, cooler than any known solitary brown dwarf.
Deep HST and Spitzer imaging of a passively evolving galaxy identified in the Gemini Deep Deep Survey (GDDS) has led to the detection of a very compact cluster of massive red galaxies at a redshift of z =1.51.
For some unknown reason the GNIRS temperature controller failed, resulting in temperatures near 200° C for an undetermined period of time. After the initial inspection, it was obvious that some components were damaged, but many were clearly fine.
An Australian team used the Gemini South Telescope to find that the most massive galaxies evolve through a variety of mechanisms which are dependent on the mass of their cluster environment.
Analysis of nine short gamma-ray bursts (GRBs) observed with Gemini, Magellan, and the Hubble Space Telescope reveals that the progenitors of these GRBs may reside in faint host galaxies at redshifts of z = 1.1 and beyond.
Astronomers have serendipitously discovered a record-breaking pair of low-mass objects with an extreme orbital separation. The petite objects, each of which has a mass less than 100 times that of Jupiter, are separated by more than 5,000 times the distance between the Sun and Earth
An image released today by the Gemini Observatory brings into focus a new and remarkably detailed view of supersonic "bullets" of gas and the wakes created as they pierce through clouds of molecular hydrogen in the Orion Nebula.
The instrument TEXES on Gemini North mapped the star-forming region IRS2 located deep within the molecular cloud associated with the giant H II region W51.
Gemini South telescope on the night of January 18th captured this image of Comet McNaught in the twilight sky. Surprising even veteran comet researchers, McNaught has become the brightest comet visible in over 40 years.
New mid-infrared images of the Zeta Leporis circumstellar disk obtained with T-ReCS on Gemini South have for the first time revealed what researchers are calling an "exo-asteroid belt" around another star.
Astronomers have announced the discovery of huge quantities of an unusual variety of oxygen in two very rare types of stars, suggesting that the origin of these oddball stars may lie in the physics behind the mergers of white dwarf star pairs.