Cloud-scale Gas Properties, Depletion Times, and Star Formation Efficiency per Freefall Time in PHANGS–ALMA

Cloud-scale Gas Properties, Depletion Times, and Star Formation Efficiency per Freefall Time in PHANGS–ALMA

We compare measurements of star formation efficiency to cloud-scale gas properties across the PHANGS– ALMA sample. Dividing 67 galaxies into 1.5 kpc scale regions, we calculate the molecular gas depletion time ${\tau }_{{\rm{dep}}}^{{\rm{mol}}}={{\rm{\Sigma }}}_{{\rm{mol}}}/{{\rm{\Sigma }}}_{{\rm{SF...

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Main Authors: Adam K. Leroy, Jiayi Sun, Sharon Meidt, Oscar Agertz, I-Da Chiang, Jindra Gensior, Simon C. O. Glover, Oleg Y. Gnedin, Annie Hughes, Eva Schinnerer, Ashley T. Barnes, Frank Bigiel, Alberto D. Bolatto, Dario Colombo, Jakob den Brok, Mélanie Chevance, Ryan Chown, Cosima Eibensteiner, Damian R. Gleis, Kathryn Grasha, Jonathan D. Henshaw, Ralf S. Klessen, Eric W. Koch, Elias K. Oakes, Hsi-An Pan, Miguel Querejeta, Erik Rosolowsky, Toshiki Saito, Karin Sandstrom, Sumit K. Sarbadhicary, Yu-Hsuan Teng, Antonio Usero, Dyas Utomo, Thomas G. Williams
Format: Article
Language:English
Published: IOP Publishing 2025-01-01
Series:The Astrophysical Journal
Subjects:
Star formation
Disk galaxies
Interstellar medium
Molecular gas
Online Access:https://doi.org/10.3847/1538-4357/adbcab
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