Lunch talk on Sep. 19, 2022
Unveiling the nature of optically-dark galaxies: A substantial population of compact starbursts with high infrared optical depths
Speaker:Shuowen Jin (Cosmic Dawn Center & DTU Space)
Venue:Video Conference
Time:12:30 PM, Monday, Sep. 19, 2022
Abstract:
Optically-dark galaxies belong to a population that is invisible or extremely faint in deep optical imaging even with HST, but well-detected in IRAC, (sub)mm or radio. This population has been found to be dominant in the early Universe, and contributed significantly to the Cosmic Star Formation Density. However, their extreme faintness makes it difficult to measure the redshifts and ISM properties, preventing us from unveiling its nature. Recently, using NOEMA and ALMA 3mm line scans, we measured spectroscopic redshifts of ten optically-dark galaxies at 3.5
Report PPT:SWIFAR_Shuowen Jin.pdf