Bursting Bubbles: Clustered Supernova Feedback in Local and High-redshift Galaxies
Abstract
We compare an analytic model for the evolution of supernova-driven superbubbles with observations of local and high-redshift galaxies, and the properties of intact H i shells in local star-forming galaxies. Our model correctly predicts the presence of superwinds in local star-forming galaxies (e.g., NGC 253) and the ubiquity of outflows near z ∼ 2. We find that high-redshift galaxies may "capture" 20%–50% of their feedback momentum in the dense ISM (with the remainder escaping into the nearby CGM), whereas local galaxies may contain ≲10% of their feedback momentum from the central starburst. Using azimuthally averaged galaxy properties, we predict that most superbubbles stall and fragment within the ISM, and that this occurs at, or near, the gas scale height. We find a consistent interpretation in the observed H i bubble radii and velocities, and predict that most will fragment within the ISM, and that those able to break out originate from short dynamical time regions (where the dynamical time is shorter than feedback timescales). Additionally, we demonstrate that models with constant star cluster formation efficiency per Toomre mass are inconsistent with the occurrence of outflows from high-z starbursts and local circumnuclear regions.
Additional Information
© 2022. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received 2021 September 23; revised 2021 December 21; accepted 2021 December 30; published 2022 January 14. M.E.O. is grateful for the encouragement of his late father, S.R.O., in studying astrophysics. We thank Alex Gurvich, Lee Armus, and Phil Hopkins for conversations relating this model to disk formation at intermediate redshifts, and connections with spatially resolved observations and superwinds. We also thank the anonymous referee for comments and suggestions that significantly strengthened the manuscript. M.E.O. was supported by the National Science Foundation Graduate Research Fellowship under grant No. 1144469. The Flatiron Institute is supported by the Simons Foundation. This research has made use of NASA's Astrophysics Data System. B.B. is grateful for support from the Packard Fellowship and Sloan Fellowship.Attached Files
Published - Orr_2022_ApJL_924_L28.pdf
Submitted - 2109.14656.pdf
Files
Name | Size | Download all |
---|---|---|
md5:e43ca0324b36c0a1b5c6a3d3903d0a81
|
6.1 MB | Preview Download |
md5:92b223cb80d369a93eea2c74d3390778
|
822.7 kB | Preview Download |
Additional details
- Alternative title
- Bursting Bubbles: Feedback from Clustered SNe and the Trade-off Between Turbulence and Outflows
- Eprint ID
- 112953
- Resolver ID
- CaltechAUTHORS:20220118-993604000
- DGE-1144469
- NSF Graduate Research Fellowship
- Simons Foundation
- David and Lucile Packard Foundation
- Alfred P. Sloan Foundation
- Created
-
2022-01-19Created from EPrint's datestamp field
- Updated
-
2022-01-19Created from EPrint's last_modified field
- Caltech groups
- TAPIR