Advances of solar system radio astronomy on Titan and Neptune with ALMA

ABSTRACT :
We have carried out observational research of planetary atmospheric chemistry and physics using both single-dish and interferometric radio telescopes. In particular, in the ALMA era, we have focused on Titan and Neptune because of their complex atmospheric composition and relating chemistry. On Titan, new determinations of isotopic ratios on trace species and a new detection of long carbon-chain molecule enabled us to investigate their chemical processes [1][2]. On Neptune, due to the fine spatial resolution of ALMA, even the spatial distribution of trace species and continuum emission have been achieved by ALMA [3][4]. In this presentation, a summary of our recent achievements, in particular on asteroidal research, will be introduced for future collaborations. [1]Iino et al., ApJ, 890(2), 95. [2]Iino et al., PSJ, 2(4), 166. [3] Iino et al., AJ, 155(2), 92. [4]Iino et al., ApJL, 903(1)