Invited Presentation

ALCHEMI survey: a comprehensive extragalactic spectra scan in an archetypal starburst galaxy NGC 253

Author(s): Nanase Harada (ASIAA), Sergio Martin (ESO/JAO), Jeff Mangum (NRAO), and ALCHEMI collaboration

Presenter: Nanase Harada (ASIAA)

ALCHEMI, ALMA Comprehensive High-resolution Molecular Inventory, is one of ALMA Large Programs in Cycle 5. We cover the central molecular zone of a starburst galaxy NGC 253 in Bands 3, 4, 6, 7, with the follow-up of Band 5 in Cycle 6. Our data show rich chemical complexity, unprecedented in external galaxies. I will present an overview of the program as well as some of individual science projects such as the effects of UV radiation and cosmic rays, physical conditions of the molecular gas, isotopic ratios as an indicator of stellar processes, and detections of complex organic molecules.