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The Gemini Planet Imager (GPI) is the dedicated high-contrast imaging facility, located on Gemini South, designed for the direct detection and characterization of young Jupiter mass exoplanets. In 2019, Gemini is considering moving GPI from…

During the commissioning of the Gemini MCAO System (GeMS), we had the opportunity to obtain data with the Gemini Multi-Object Spectrograph (GMOS), the most utilised instrument at Gemini South Observatory, in March and May 2012. Several…

Instrumentation and Methods for Astrophysics · Physics 2016-04-20 Pascale Hibon , Vincent Garrel , Benoit Neichel , Benjamin Prout , Francois Rigaut , Alice Koning , Eleazar R. Carrasco , German Gimeno , Peter Pessev

The Near Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope affords the astronomical community an unprecedented space-based Multi-Object Spectroscopy (MOS) capability through the use of a programmable array of…

Instrumentation and Methods for Astrophysics · Physics 2024-08-29 Katie Bechtold , Torsten Böker , David E. Franz , Maurice te Plate , Timothy D. Rawle , Rai Wu , Peter Zeidler

The Gemini Planet Imager (GPI) is an integral field spectrograph (IFS) and coronagraph that is one of the few current generation instruments optimized for high-contrast direct imaging of substellar companions. The instrument is in the…

This paper is a response to a call for white papers solicited by Gemini Observatory and its Science and Technology Advisory Committee, to help define the science case and requirements for a new Gemini instrument, envisaged to consist of a…

Graph neural networks (GNNs) have emerged as a powerful approach for modelling and learning from graph-structured data. Multiple fields have since benefitted enormously from the capabilities of GNNs, such as recommendation systems, social…

Hardware Architecture · Computer Science 2023-07-06 Salma Afifi , Febin Sunny , Amin Shafiee , Mahdi Nikdast , Sudeep Pasricha

The Gemini Planet Imager (GPI) combines extreme adaptive optics, an integral field spectrograph, and a high performance coronagraph to directly image extrasolar planets in the near-infrared. Because the coronagraph blocks most of the light…

The Gemini Planet Imager (GPI) is a high-contrast imaging instrument designed to directly image and characterize exoplanets. GPI is currently undergoing several upgrades to improve performance. In this paper, we discuss the upgrades to the…

The DEEP2/DEIMOS redshift survey, which will begin observing in the Spring of 2002, will gather high quality spectra on ~60000 galaxies in order to study the evolution of the properties and large scale clustering of galaxies at z~1. The…

Astrophysics · Physics 2007-05-23 Christian Marinoni , Marc Davis , Alison L. Coil , Douglas Finkbeiner

The Gemini Multi-conjugate Adaptive Optics System - GeMS, a facility instrument mounted on the Gemini South telescope, delivers a uniform, near diffraction limited images at near infrared wavelengths (0.95 microns- 2.5 microns) over a field…

The GPU-based High-order adaptive OpticS Testbench (GHOST) at the European Southern Observatory (ESO) is a new 2-stage extreme adaptive optics (XAO) testbench at ESO. The GHOST is designed to investigate and evaluate new control methods…

The Gemini Planet Imager (GPI) is a next-generation high-contrast imager built for the Gemini Observatory. The GPI exoplanet survey (GPIES) consortium is made up of 102 researchers from 28 institutions in North and South America and Europe.…

Instrumentation and Methods for Astrophysics · Physics 2016-09-29 Franck Marchis , Paul G. Kalas , Marshall D. Perrin , Quinn M. Konopacky , Dmitry Savransky , Bruce Macintosh , Christian Marois , James R. Graham

The Gemini Deep Deep Survey (GDDS) is an ultra-deep (K<20.6 mag, I<24.5 mag) redshift survey targeting galaxies in the "redshift desert" between 1<z<2. The primary goal of the survey is to constrain the space density at high redshift of…

Gemini Observatory's northern and southern telescopes are both presently being outfitted with facility mid-infrared imagers/spectrometers. This will allow observers the unique opportunity to apply to one observatory for all-sky…

Astrophysics · Physics 2009-11-10 James M. De Buizer , R. Scott Fisher

We present the updates of the Galactic O-Star Catalog (GOSC) that we have undertaken in the last two years: new spectral types, more objects, additional information, and coordination with CDS. We also present updates for the Galactic O-Star…

Solar and Stellar Astrophysics · Physics 2016-10-12 J. Maíz Apellániz , Á. Alonso Moragón , L. Ortiz de Zárate Alcarazo

The 4MOST consortium is currently halfway through a Conceptual Design study for ESO with the aim to develop a wide-field (>3 square degree, goal >5 square degree), high-multiplex (>1500 fibres, goal 3000 fibres) spectroscopic survey…

Instrumentation and Methods for Astrophysics · Physics 2015-06-05 Roelof S. de Jong , Olga Bellido-Tirado , Cristina Chiappini , Éric Depagne , Roger Haynes , Diane Johl , Olivier Schnurr , Axel Schwope , Jakob Walcher , Frank Dionies , Dionne Haynes , Andreas Kelz , Francisco S. Kitaura , Georg Lamer , Ivan Minchev , Volker Müller , Sebastián E. Nuza , Jean-Christophe Olaya , Tilmann Piffl , Emil Popow , Matthias Steinmetz , Uğur Ural , Mary Williams , Roland Winkler , Lutz Wisotzki , Wolfgang R. Ansorgb , Manda Banerji , Eduardo Gonzalez Solares , Mike Irwin , Robert C. Kennicutt , David King , Richard McMahon , Sergey Koposov , Ian R. Parry , Nicholas A. Walton , Gert Finger , Olaf Iwert , Mirko Krumpe , Jean-Louis Lizon , Mainieri Vincenzo , Jean-Philippe Amans , Piercarlo Bonifacio , Mathieu Cohen , Patrick Francois , Pascal Jagourel , Shan B. Mignot , Frédéric Royer , Paola Sartoretti , Ralf Bender , Frank Grupp , Hans-Joachim Hess , Florian Lang-Bardl , Bernard Muschielok , Hans Böhringer , Thomas Boller , Angela Bongiorno , Marcella Brusa , Tom Dwelly , Andrea Merloni , Kirpal Nandra , Mara Salvato , Johannes H. Pragt , Ramón Navarro , Gerrit Gerlofsma , Ronald Roelfsema , Gavin B. Dalton , Kevin F. Middleton , Ian A. Tosh , Corrado Boeche , Elisabetta Caffau , Norbert Christlieb , Eva K. Grebel , Camilla Hansen , Andreas Koch , Hans-G. Ludwig , Andreas Quirrenbach , Luca Sbordone , Walter Seifert , Guido Thimm , Trifon Trifonov , Amina Helmi , Scott C. Trager , Sofia Feltzing , Andreas Korn , Wilfried Boland

4MOST is a new wide-field, high-multiplex spectroscopic survey facility for the VISTA telescope of ESO. Starting in 2022, 4MOST will deploy more than 2400 fibres in a 4.1 square degree field-of-view using a positioner based on the tilting…

Instrumentation and Methods for Astrophysics · Physics 2018-08-22 S. Feltzing , T. Bensby , M. Bergemann , C. Chiappini , N. Christlieb , M. R. Cioni , A. Helmi , M. Irwin , I. Minchev , E. Starkenburg , R. de Jong

Community access to deep (i ~ 25), highly-multiplexed optical and near-infrared multi-object spectroscopy (MOS) on 8-40m telescopes would greatly improve measurements of cosmological parameters from LSST. The largest gain would come from…

We present the concept and preliminary design of the Galileo OH Subtracted Spectrograph [GOHSS], a multifibre NIR spectrograph for faint objects. The instrument represents a collaboration between the Institute of Astronomy, Cambridge and…