报告题目:Cold gas in galaxies: single-dish surveys in the SKA era

报  告  人:Barbara Catinella (University of Western Australia)

报告时间:Friday, September 22, 2017, 03:00pm

报告地点:蒙民伟科技南楼 S727

报告摘要:A detailed knowledge of how gas cycles in and around galaxies, and how it depends on their structural and star formation properties, as well as environment, is crucial to understand galaxy formation and evolution. This requires sensitive surveys of cold gas for representative samples of galaxies, able to probe the gas-poor regime. I will present results based on the recently completed, extended GALEX Arecibo SDSS Survey (xGASS), which includes the deepest observations of cold gas in galaxies currently available, and will discuss results obtained via spectral stacking of the largest stellar mass-selected sample with atomic hydrogen data assembled to date. I will argue that, even in the era of the Square Kilometre Array and its precursors, there are important scientific areas where large single-dish telescopes such as Arecibo and FAST can uniquely contribute.