Gemini News Archive

Galaxies Old and New Share a Common Thread

A team using the Gemini Multi-Conjugate Adaptive Optics System (GeMS) with the Gemini South Adaptive Optics Imager (GSAOI) have, for the first time, measured the stellar masses relative to the physical sizes of several galaxies in a cluster at a lookback time of about 5 billion years.

Galaxies Old and New Share a Common Thread

Volcanoes on Io: Long-term Tracking with Adaptive Optics

Jupiter’s moon Io is the most volcanically active world in our Solar System. Now, the longest series of frequent high-resolution tracking of Io’s thermal emission is providing insights on Io’s volcanoes thanks to a powerful joint observation program between the Gemini North telescope (with NIRI+Altair instrument) and the W.M. Keck Observatory.

Volcanoes on Io: Long-term Tracking with Adaptive Optics

Cluster’s Advanced Age in Razor-sharp Focus

An international team of astronomers, using the Gemini Multi-conjugate adaptive optics System (GeMS) and the high resolution camera GSAOI, brought the ancient globular cluster NGC 6624 into razor-sharp focus and determined its age with very high accuracy - a challenging observation even from space.

Mysterious “Blobs” Can be Closer Than We Thought

Astronomers studying a mysterious phenomenon known as Lyman-alpha blobs (LABs) have discovered several of these high-energy objects in galaxies that are much closer than previously known. The discovery is significant because these closer specimens are much easier to study, and because they live at a time when the Universe was much older and more mature, allowing astronomers to study their evolution with cosmic time

Gemini Images Galaxy That Is 99.99 Percent Dark Matter

Using the W. M. Keck Observatory and the Gemini North telescope – both on Maunakea, Hawai‘i – astronomers found a galaxy whose mass is almost entirely Dark Matter.

Gemini Images Galaxy That Is 99.99 Percent Dark Matter

Could Gravitational Wave Events Flash in Visible Light?

Gemini explores the possibility of short-lived optical emission (visible light) from the violent events that produce gravitational waves.

Could Gravitational Wave Events Flash in Visible Light?

Gemini Tracks Collapse of Io's Atmosphere During Frigid Eclipses

Gemini observations show that the thin atmosphere of Jupiter's moon Io undergoes dramatic changes during frequent eclipses with the giant planet.

Gemini Tracks Collapse of Io's Atmosphere During Frigid Eclipses

Gemini Observatory Instrumental in Exoplanet Harvest

Gemini Observatory plays a key role in the latest harvest of over 100 confirmed exoplanets from NASA’s K2 mission, the repurposed Kepler spacecraft. Three instruments on the Gemini North telescope delivered precise images verifying many of the candidate stars as planetary system hosts. Researchers note that these systems could contain a considerable number of rocky, potentially Earth-like exoplanets.

Gemini Observatory Instrumental in Exoplanet Harvest

Exploring a Frozen Extrasolar World

As the Juno mission begins exploring Jupiter in our Solar System, scientists explore a solo world that researchers say looks more similar to Jupiter than any exoplanet yet discovered.

Exploring a Frozen Extrasolar World

Innovative Gemini/CFHT Partnership Explores a Hot Jupiter

The novel collaboration between the Gemini Observatory and Canada-France-Hawai‘i Telescope (CFHT) called GRACES (Gemini Remote Access to CFHT ESPaDOnS Spectrograph), helped to characterize a “hot Jupiter” around the T-Tauri star V830 Tau.

Innovative Gemini/CFHT Partnership Explores a Hot Jupiter

Ultra-sharp Image Uncovers the Shocking Lives of Young Stars

The world’s most advanced adaptive optics system reveals “shocking” details on star formation in a new image released by the Gemini Observatory probing a swarm of young and forming stars that appear to have been shocked into existence.

Ultra-sharp Image Uncovers the Shocking Lives of Young Stars

Resolving an Exoplanet’s Motion to Constrain a Young Planetary System

Using the Gemini Planet Imager astronomers have successfully monitored the motion of a planet around the forming exoplanet system orbiting the star HD 95086 and suggest that more unseen planets are present.

Resolving an Exoplanet’s Motion to Constrain a Young Planetary System

Helium’s Role in the Pulsation of Early White Dwarfs

Before low-medium mass stars become white dwarfs they pulsate wildly and eventually spew their outer layers into space – often forming beautiful planetary nebulae. The same stars are predicted to continue pulsating during their transformation to a white dwarf, if they have helium in their atmospheres.

Helium’s Role in the Pulsation of Early White Dwarfs

Gemini Identifies Free-floating Jupiter Analogue

Using the FLAMINGOS-2 spectrometer/imager at Gemini South, astronomers have characterized an especially young, free-floating analogue to Jupiter in our neighborhood (92 light years away).

Gemini Identifies Free-floating Jupiter Analogue

Lonely Black Hole Relic Shines Light on Young Universe

Astronomers using the 8-meter Gemini North telescope on Hawaii’s Maunakea have probed an enigmatic, and unexpected, supermassive black hole dominating the core of a large galaxy in the cosmic backwaters.

Lonely Black Hole Relic Shines Light on Young Universe

Celebrating 12 Years of Journey Through the Universe (and Counting!)

During the week of March 7-11, 83 observatory professionals consisting of astronomers, engineers, astronomy educators, and other observatory staff brought their passion for science into hundreds of local Hawai'i Island classrooms as a part of Gemini Observatoryʻs flagship annual outreach program, Journey Through the Universe.

Celebrating 12 Years of Journey Through the Universe (and Counting!)

The Fastest Quasar Ultraviolet Wind

Observations using the Gemini Multi-Object Spectrographs (GMOS) on both Gemini North and South telescopes have revealed the fastest ultraviolet wind ever measured in a quasar.

The Fastest Quasar Ultraviolet Wind

Supermassive Black Hole - That Wasn't

Research shows that supermassive black holes like to be the only residents on the block, as stars too close to them end up being thrown vast distances from the galaxy's center.

The Supermassive Black Hole - That Wasn't

Are the Coolest Brown Dwarfs Loners?

Astronomers use Gemini’s high-resolution multi-conjugate adaptive optics system to look for elusive companions to the lowest mass brown dwarfs.

Are the Coolest Brown Dwarfs Loners?

Gemini Confirms a Free-Floating Planet

An extremely red planetary-mass object is confirmed, based on Gemini observations, to be a free-floating member of the Beta Pictoris moving group. This is one of only a handful of directly imaged planets available for spectroscopy – allowing scientists to probe the world’s physical characteristics.

Gemini Confirms a Free-Floating Planet

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