Revealing Cosmic Origins: from Exoplanet Atmospheres to the Intergalactic Medium with the HST/COS
Cynthia Froning



The Cosmic Origins Spectrograph (COS), an ultra-sensitive ultraviolet spectrograph, was successfully installed on the Hubble Space Telescope during Servicing Mission 4 in 2009. Covering the 115-320 nm waveband with up to 30 times the sensitivity of previous UV spectrographs, COS has opened up new parameter space for surveys in a number of science fields united by the theme of probing cosmic origins, from the atmospheres of planets to the large scale structure of the modern universe. More than 110 papers based on COS data have been published in the refereed literature to date. In my work as COS Project Scientist, I was responsible for supervising much of the pre-launch and on-orbit science verification programs, as well as overseeing the 555 orbit Guaranteed Time Observing program awarded to the COS science team. In this talk, I will present the development history of COS and results from the first three years of science operations. I will also discuss applications of technical and management paradigms from the COS program that are of interest for the development of next-generation ground-based instrumentation.