SPICA Observations in the Era of Ground-Based THz Astronomy

SPICA Science Conference from Exoplanets to Distant Galaxies: SPICA's New Window on the Cool Universe (June 18-21, 2013. Ito Hall, the University of Tokyo), Bunkyou-ku, Tokyo, Japan
When SPICA starts observations, some ground-based terahertz (THz) telescopes will be in operation by targeting atmospheric windows around 1-1.5 THz. Among future ground-based THz facilities we focus on the Greenland Telescope (GLT), whose dish size and angular resolution are 12m and 4′′(at 1.5 THz). The largest advantage of those ground-based telescopes is better angular resolutions, although the sensitivity is worse than SPICA. Based on some scientific cases discussed for the GLT, we discuss how SPICA can collaborate with ground-based THz telescopes. The shorter-wavelength coverage of SPICA than the GLT is suitable for improving dust temperature estimates, and identifying some important chemical species. A high angular resolution of the GLT is crucial to produce high-resolution map or to overcome the confusion limit of SPICA. Flexible ToO (Target of Opportunity)-type observations are also worth considering for SPICA.
著者人数: 21名
形態: カラー図版あり
Number of authors: 21
Physical characteristics: Original contains color illustrations
資料番号: AA1730027047
レポート番号: JAXA-SP-17-010E