GeminiFocus 2017 Year in Review | Page 2

1 Director’s Message Laura Ferrarese 3 Gemini North and South Join in Welcoming the Solar System’s First Interstellar Emissary John Blakeslee ON THE COVER: Artist’s concept of interstellar asteroid 1I/2017 U1 (‘Oumuamua), which is unlike that of any object seen in our Solar System. The small inset at center shows a Gemini image of ‘Oumuamua, while the panel below it shows the object’s light curve created from VLT, Gemini (North and South), and Keck data. The article summarizing this work begins on page 3. Also shown are the covers from the April, July, and October issues of GeminiFocus. Credit: Gemini Observatory/ AURA/NSF (inset); University of Hawai‘i Institute for Astronomy (panel); Gemini Observatory/AURA/NSF/Joy Pollard (background artwork). 7 Rocky Planet Engulfment Explains Stellar Odd Couple Carlos Saffe 11 Blue Binaries Suggest a Smooth Migration for Young Neptune Wes Fraser 37 Science Highlights John Blakeslee and Peter Michaud 49 On the Horizon Gemini staff contributions 58 MAROON-X: A New ExoEarth-finder Spectrograph for Gemini North Jacob Bean, Andreas Seifahrt, Alison Peck 63 News for Users Gemini staff contributions 78 Gemini’s Users Provide Valuable Feedback for the Future 16 The Host Galaxy of the Repeating André-Nicolas Chené Shriharsh P. Tendulkar, on behalf of the Alison Peck Fast Radio Burst FRB 121102 FRB 121102 collaboration 21 Astronomers Feast on First Light From Gravitational Wave Event Peter Michaud 25 Striking Gemini Images Point Juno Spacecraft Toward Discovery Peter Michaud 29 Persistence Pays Off in the Study of Shock-heated Gas Tom Geballe 33 The Chosen One: OCTOCAM 81 Internships 84 Gemini Assistant Scientist Awarded the 2017 Carl Sagan Medal Gemini staff contribution 86 Viaje al Universo 2017 Encourages Diversity in Astronomy and More Manuel Paredes 90 Exploring, Learning, and Fun: Gemini Outreach Events Span Both Hemispheres! Alexis Ann Acohido and Manuel Paredes (Gen4#3) Stephen Goodsell, on behalf of the OCTOCAM team GeminiFocus January 2018 / 2017 Year in Review GeminiFocus is a quarterly publication of the Gemini Observatory 670 N. A‘ohoku Place, Hilo, Hawai‘i 96720, USA / Ph.: (808) 974-2500 / Fax: (808) 974-2589 Online viewing address: Managing Editor: Peter Michaud / Associate Editor: Stephen James O’Meara Designer: Eve Furchgott/ Blue Heron Multimedia Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation or the Gemini Partnership. ii GeminiFocus January 2018 / 2017 Year in Review