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Local instability signatures in ALMA observations of dense gas in NGC7469
Kambiz Fathi, Takuma Izumi, Alessandro B. Romeo +11
We present an unprecedented measurement of the disc stability and local instability scales in the luminous infrared Seyfert 1 host, NGC7469, based on ALMA observations of dense gas…
A double molecular disc in the triple-barred starburst galaxy NGC 6946: structure and stability
Alessandro B. Romeo, Kambiz Fathi
The late-type spiral galaxy NGC 6946 is a prime example of molecular gas dynamics driven by "bars within bars". Here we use data from the BIMA SONG and HERACLES surveys to analyse…
Characterizing gravitational instability in turbulent multi-component galactic discs
Oscar Agertz, Alessandro B. Romeo, Kearn Grisdale
Gravitational instabilities play an important role in galaxy evolution and in shaping the interstellar medium (ISM). The ISM is observed to be highly turbulent, meaning that observ…