The Life and Times of Star-Forming Cores: an Analysis of Dense Gas in the STARFORGE Simulations

The Life and Times of Star-Forming Cores: an Analysis of Dense Gas in the STARFORGE Simulations. Offner, S. S. R., Taylor, J., & Grudic, M. Y. February, 2025. arXiv:2502.15057 [astro-ph]

Paper doi abstract bibtex

Dense gas in molecular clouds is an important signature of ongoing and future star formation. We identify and track dense cores in the starforge simulations, following the core evolution from birth through dispersal by stellar feedback for typical Milky Way cloud conditions. Only ∼8% of cores host protostars, and most disperse before forming stars. The median starless and protostellar core lifetimes are ∼ 0.5−0.6 Myr and ∼ 0.8−1.1 Myr, respectively, where the protostellar phase lasts ∼ 0.1+0.1 −0.05 Myr.

@misc{offner_life_2025,
	title = {The {Life} and {Times} of {Star}-{Forming} {Cores}: an {Analysis} of {Dense} {Gas} in the {STARFORGE} {Simulations}},
	shorttitle = {The {Life} and {Times} of {Star}-{Forming} {Cores}},
	url = {http://arxiv.org/abs/2502.15057},
	doi = {10.48550/arXiv.2502.15057},
	abstract = {Dense gas in molecular clouds is an important signature of ongoing and future star formation. We identify and track dense cores in the starforge simulations, following the core evolution from birth through dispersal by stellar feedback for typical Milky Way cloud conditions. Only ∼8\% of cores host protostars, and most disperse before forming stars. The median starless and protostellar core lifetimes are ∼ 0.5−0.6 Myr and ∼ 0.8−1.1 Myr, respectively, where the protostellar phase lasts ∼ 0.1+0.1 −0.05 Myr.},
	language = {en},
	urldate = {2025-03-31},
	publisher = {arXiv},
	author = {Offner, Stella S. R. and Taylor, Josh and Grudic, Michael Y.},
	month = feb,
	year = {2025},
	note = {arXiv:2502.15057 [astro-ph]},
	keywords = {Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics},
}

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