All-sky infrared Spectro-Photometric Survey Mission, SPHEREx

Speaker: Dr. Woong-Seob Jeong (KASI)

Date: 2019/11/26, Tuesday, 5 pm

Room: Science hall B102

Language: English

Abstract:

KASI have developed space IR instruments onboard small satellites and recently joined the NASA MIDEX mission, SPHEREx as an international partner. Major scientific objective is to reveal the origin of Cosmic Infrared Background (CIB) with the capabilities of wide field of view as well as imaging spectroscopy in space. The Korean infrared space mission, NISS onboard NEXTSat-1, had been developed by KASI. The capability of both imaging and spectroscopy is a unique function of the NISS. At first, it has realized the low-resolution spectroscopy (R~20) with a wide field of view of 2 x 2 deg. in a wide near-infrared range from 0.95 to 2.5μm. It have successfully demonstrated the space technologies related to the infrared spectro-photometry in space. As an extension of the NISS, the SPEHREx (Spectro-Photometer for the History of the Universe Epoch of Reionization, and Ices Explorer) is the NASA MIDEX (Medium-class Explorer) mission proposed together with KASI (PI Institute: Caltech). It will perform the first all-sky infrared spectro-photometric survey to probe the origin of our Universe, to explore the origin and evolution of galaxies, and to explore whether planets around other stars could harbor life. Compared to the NISS, the SPHEREx is designed to have a much wider FoV of 3.5 x 11.3 deg. as well as wider spectral range from 0.75 to 5.0μm. Here, I introduce the infrared spectro-photometric space missions and our extragalactic science cases addressed with spectro-photometric dataset. In addition, I introduce the possible synergy with other current or future multi-wavelength data, especially from the KASI's large facilities.