The Outflowing [O ii] Nebulae of Compact Starburst Galaxies at z ∼ 0.5
High-velocity outflows are ubiquitous in compact, massive (M * ∼ 1011 M ⊙), z ∼ 0.5 galaxies with extreme star formation surface densities (ΣSFR ∼ 2000 M ⊙ yr−1 kpc−2). We have previously detected and characterized these outflows using Mg ii absorption lines. To probe their full extent, we present K...
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| Hauptverfasser: | , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2024
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| In: |
The astrophysical journal
Year: 2024, Jahrgang: 975, Heft: 2, Pages: 1-29 |
| ISSN: | 1538-4357 |
| DOI: | 10.3847/1538-4357/ad7b0c |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.3847/1538-4357/ad7b0c Verlag, kostenfrei, Volltext: https://dx.doi.org/10.3847/1538-4357/ad7b0c 
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| Verfasserangaben: | Serena Perrotta, Alison L. Coil, David S. N. Rupke, Wenmeng Ning, Brendan Duong, Aleksandar M. Diamond-Stanic, Drummond B. Fielding, James E. Geach, Ryan C. Hickox, John Moustakas, Gregory H. Rudnick, Paul H. Sell, Cameren N. Swiggum, and Christy A. Tremonti |
MARC
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| 245 | 1 | 4 | |a The Outflowing [O ii] Nebulae of Compact Starburst Galaxies at z ∼ 0.5 |c Serena Perrotta, Alison L. Coil, David S. N. Rupke, Wenmeng Ning, Brendan Duong, Aleksandar M. Diamond-Stanic, Drummond B. Fielding, James E. Geach, Ryan C. Hickox, John Moustakas, Gregory H. Rudnick, Paul H. Sell, Cameren N. Swiggum, and Christy A. Tremonti |
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| 520 | |a High-velocity outflows are ubiquitous in compact, massive (M * ∼ 1011 M ⊙), z ∼ 0.5 galaxies with extreme star formation surface densities (ΣSFR ∼ 2000 M ⊙ yr−1 kpc−2). We have previously detected and characterized these outflows using Mg ii absorption lines. To probe their full extent, we present Keck/KCWI integral field spectroscopy of the [O ii] and Mg ii emission nebulae surrounding all of the 12 galaxies in this study. We find that [O ii] is more effective than Mg ii in tracing low surface brightness, extended emission in these galaxies. The [O ii] nebulae are spatially extended beyond the stars, with radial extent R 90 between 10 and 40 kpc. The nebulae exhibit nongravitational motions, indicating galactic outflows with maximum blueshifted velocities ranging from −335 to −1920 km s−1. The outflow kinematics correlate with the bursty star formation histories of these galaxies. Galaxies with the most recent bursts of star formation (within the last <3 Myr) exhibit the highest central velocity dispersions (σ ≳ 400 km s−1), while the oldest bursts have the lowest-velocity outflows. Many galaxies exhibit both high-velocity cores and more extended, slower-moving gas indicative of multiple outflow episodes. The slower, larger outflows occurred earlier and have decelerated as they propagate into the circumgalactic medium and mix on timescales ≳50 Myr. | ||
| 700 | 1 | |a Coil, Alison L. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Rupke, David |e VerfasserIn |0 (DE-588)1308382030 |0 (DE-627)1869007050 |4 aut | |
| 700 | 1 | |a Ning, Wenmeng |e VerfasserIn |4 aut | |
| 700 | 1 | |a Duong, Brendan |e VerfasserIn |4 aut | |
| 700 | 1 | |a Diamond-Stanic, Aleksandar M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Fielding, Drummond B. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Geach, James E. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Hickox, Ryan C. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Moustakas, John |e VerfasserIn |4 aut | |
| 700 | 1 | |a Rudnick, Gregory H. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Sell, Paul H. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Swiggum, Cameren N. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Tremonti, Christy A. |e VerfasserIn |4 aut | |
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