Gemini News Archive

bHROS Available on Gemini South for Semester 2006A

With system and science verification complete, the Gemini Bench-mounted High-Resolution Spectrograph (bHROS) is available for science programs in 2006A.

Mauna Kea Giants Find Common Nursery for Comets

A series of coordinated observations, made under ideal conditions by the world’s largest collection of big telescopes, delivered surprising new insights into the ancestry and life cycles of comets.

Dusty Old Star Offers Window to Our Future, Astronomers Report

Astronomers have glimpsed dusty debris around an essentially dead star where gravity and radiation should have long ago removed any sign of dust. The discovery might provide insights into our own solar system’s eventual demise several billion years from now.

A Chinese Dragon and a Knotted Galactic Embrace

The Gemini Observatory released a pair of images today that capture the dynamics of two very different interactions in space.

Gemini Uncovers 'Lost City' of Stars

Astronomers using the 8-meter Gemini South telescope have revealed that the galaxy NGC 300 has a large, faint extended disk made of ancient stars, enlarging the known diameter of the galaxy by a factor of two or more.

Gemini Observatory Shows That "10th Planet" Has a Pluto-Like Surface

Gemini Observatory has obtained a preliminary spectrum of 2003 UB313, the so-called "10th planet". 

Dustiest Star Could Harbor a Young Earth

A relatively young star located about 300 light-years away is greatly improving our understanding of the formation of Earth-like planets.

Gemini Prepares for Planet Searching with NICI

Gemini Observatory is actively looking for sub-stellar mass companions using the existing Adaptive Optics (AO) system Altair on Gemini North, and building the specialized near-infrared coronagraph (NICI) with its own AO system for Gemini South.

Deep Impact Captured by Gemini

The Gemini North telescope on Mauna Kea successfully captured the dramatic fireworks display produced by the collision of NASA's Deep Impact probe with Comet 9P/Tempel 1.

Mid-infrared Dust Emission from Massive-Star Supernovae

Imaging by Gemini North's Michelle mid-infrared imager/spectrograph has allowed an international team of researchers to isolate and characterize the dusty remains of the supernova remnant SN 2002hh.

Gemini Survey Uncovers Plethora of Trapezium Treasures

Gemini South Flamingos-I observations of the outer Trapezium region by Lucas et al. have probed the region to very faint levels in the infrared.

Star Pair Grows Dust in Early Youth

Using T-ReCS on Gemini South, David Ciardi and his collaborators have found that processing of dust grains around the proto-binary star Serpens SVS20 began at a surprisingly early point in the system’s evolution.

Amateur Astronomers Travel Deep Into Stellar Cocoon Using Gemini

Recently a Canadian amateur astronomy group took advantage of a rare opportunity and used the Gemini 8-meter telescope to look more deeply into the remains of a particular stellar nursery than anyone ever has.

Background Information: Laser Guide Stars

An Laser Guide Star is produced by a relatively low power laser beam that shines up from a telescope into a layer of sodium gas in our upper atmosphere, creating a temporary artificial "star."

First Measurement of Hyperfine Splitting Constant in an Astrophysical Object

A joint Chile-United Kingdom team has used the NOAO-built Phoenix near-infrared spectrometer on Gemini South to obtain high-resolution spectra (R~75,000) of the [Al VI] 3.66-micron line region in the planetary nebula NGC 6302 (the Bug Nebula). 

Sedna Reveals Pristine Surface in Gemini Near-infrared Spectra

Recent spectroscopic studies of infrared light reflected from the surface of Sedna reveal that it is probably unlike Pluto and Charon since Sedna's surface does not display evidence for a large amount of either water or methane ice.

First Paper from Gemini/HST Galaxy Survey: It Takes More Than Aging to Shape A Galaxy

Can galaxies observed at very high redshifts (at a time when the universe was a fraction of its current age) evolve to look like today's nearby galaxies simply by growing older? The answer is no.

Formation of Young Massive Stars Unshrouded

The combination of Gemini sensitivity and Phoenix spectral resolution has allowed a team to observe a set of objects toward several GHII regions and search for kinematic clues to the circumstellar geometry of newly forming massive stars.

GMOS-South Probes Gas and Stellar Dynamics in Post-Merger Galaxy

Using the IFU on GMOS-South, an international research team explores a spheroidal galaxy that captured a small gas-rich galaxy in a merger that led to a burst of star formation.

100th Gemini Paper Reveals White Dwarf Progenitors are Prolific Mass Expellers

 A Canadian, U.S., and Australian team selected 24 individual white dwarfs in the field of the rich open star cluster NGC 2099 (M37), the largest spectroscopic sample ever obtained of white dwarfs in an individual star cluster.