pith. sign in

arxiv: 2409.05855 · v2 · pith:RTBYWBWBnew · submitted 2024-09-09 · 🌌 astro-ph.IM · astro-ph.SR

Gemini High-resolution Optical SpecTrograph (GHOST) at Gemini-South: Instrument performance and integration, first science, and next steps

V. M. Kalari , R. J. Diaz , G. Robertson , A. McConnachie , M. Ireland , R. Salinas , P. Young , C. Simpson
show 52 more authors
C. Hayes J. Nielsen G. Burley J. Pazder M. Gomez-Jimenez E. Martioli S. B. Howell M. Jeong S. Juneau R. Ruiz-Carmona S. Margheim A. Sheinis A. Anthony G. Baker T. A. M. Berg T. Cao E. Chapin T. Chin K. Chiboucas V. Churilov E. Deibert A. Densmore J. Dunn M. L. Edgar J. Heo D. Henderson T. Farrell J. Font V. Firpo J. Fuentes K. Labrie S. Lambert J. Lawrence J. Lothrop R. McDermid B. W. Miller G. Perez V. M. Placco P. Prado C. Quiroz F. Ramos R. Rutten K. M. G. Silva J. Thomas-Osip C. Urrutia W. D. Vacca K. Venn F. Waller L. Waller M. White S. Xu R. Zhelem
This is my paper
classification 🌌 astro-ph.IM astro-ph.SR
keywords high-resolutionghostgeminiinstrumentintegrationspectrographalongeither
0
0 comments X
read the original abstract

The Gemini South telescope is now equipped with a new high-resolution spectrograph called GHOST (the Gemini High-resolution Optical SpecTrograph). This instrument provides high-efficiency, high-resolution spectra covering 347-1060 nm in a single exposure of either one or two targets simultaneously, along with precision radial velocity spectroscopy utilizing an internal calibration source. It can operate at a spectral element resolving power of either 76000 or 56000, and can reach a SNR$\sim$5 in a 1hr exposure on a V$\sim$20.8 mag target in median site seeing, and dark skies (per resolution element). GHOST was installed on-site in June 2022, and we report performance after full integration to queue operations in November 2023, in addition to scientific results enabled by the integration observing runs. These results demonstrate the ability to observe a wide variety of bright and faint targets with high efficiency and precision. With GHOST, new avenues to explore high-resolution spectroscopy have opened up to the astronomical community. These are described, along with the planned and potential upgrades to the instrument.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. The \emph{R}-process Alliance: A Bright, Strongly \emph{R}-process-enhanced Extremely Metal-poor Star Observed with GHOST

    astro-ph.SR 2026-05 unverdicted novelty 5.0

    Observational analysis of EMP stars including a new r-process enhanced star G256353 whose heavy-element pattern matches scaled solar and neutron-star-merger predictions, supporting r-process universality.