GeminiFocus January 2019 - Page 5

of California Santa Cruz) as Principal Inves- tigator (PI), plans to determine if the host stars of Transiting Exoplanet Survey Satel- lite (TESS) exoplanet systems are binaries or multi-component; the other, with Kim Venn (University of Victoria) as PI, intends to spec- trally resolve the signature of ancient metal- poor stars in our Galaxy. High spatial resolution speckle imaging with visiting instruments ‘Alopeke (“Fox” in Ha- waiian) and the Differential Speckle Survey Instrument (DSSI) have studied the frequen- cy of multiple star-systems in the exoplanet host systems found by Kepler 2 (K2) and TESS; In 2019, PI Steve Howell (NASA Ames) will replace DSSI with a new speckle imager, Zorro (“Fox” in Spanish). Additionally, recent results from Gemini Planet Imager (GPI), and plans for improving GPI’s sensitivity and ca- pabilities, will be discussed at the Gemini AAS Open House. Meanwhile, Gemini’s high-resolution spec- troscopic capabilities are also expanding. The visiting instrument MAROON-X (PI Ja- cob Bean, University of Chicago) is on track for commissioning this year at Gemini North. MAROON-X will provide the US community with a state-of-the-art fiber-fed spectro- graph with a resolving power of R = 80,000 at 0.5-0.9 microns, capable of ~ 1 meter/sec- ond exoplanet radial velocity measurements for late-type M dwarfs. January 2019 By the end of 2019, we also expect to begin commissioning at Gemini South on the new Gemini High-resolution Optical SpecTro- graph (GHOST) — a facility instrument with high-throughput, high spectral resolution (R  ~  50-75,000) and continuous coverage between 0.36-0.95 microns. GHOST’s world- class efficiency, resolution, wavelength cov- erage, and stability will enable a broad range of science by the Gemini community, includ- ing exoplanet characterization, radial veloc- ity studies of TESS exoplanet transits, and high-resolution stellar population spectro- scopic studies. For more details on high-resolution spec- troscopy at Gemini, please attend the AAS Winter 2019 meeting splinter session Resur- gence of High-resolution Spectroscopy at Gemini. We look forward to seeing many of you in Se- attle, Washington, at the AAS Winter Meeting 2019 at our booth, Open House, and splin- ter sessions, and at the Korea Gemini User’s Meeting in Daejeon in February. May the new year bring clear skies, good see- ing, and many new scientific discoveries. Jennifer Lotz is the Gemini Observatory Director. She can be reached at: [email protected] GeminiFocus 3