Title: Dissecting star formation activities in nearby galaxies with the MaNGA survey
Speaker: Dr. Li-Hwai Lin 林俐暉 (Institute of Astronomy and Astrophysics, Academia Sinica)
Time: 15:30pm 13th April, 2018 (Friday)
Venue: R521, IoA, 2nd General Building 綜二館R521
Star-forming galaxies are found to form a tight relation in the star formation rate (SFR) and stellar mass plane, the so-called 'star-forming main sequence'. The origin of this relation and how the star-forming galaxies migrate into the quiescent population remain unanswered. In this talk, I will show that the main sequence may be a result of a local correlation between the SFR surface density and the stellar mass surface density on kpc scale based on the resolved stellar populations obtained by the Mapping Nearby Galaxies at Apache Point Observatory IFU survey (MaNGA). In addition, I'll discuss the role of molecular gas in the 'green valley galaxies', which are in the transition from the main sequence to the quiescent population based on ALMA observations.