Unveiling Kinematic Structure in the Starburst Heart of NGC 253
Monthly Notices of the Royal Astronomical Society（2020）
Abstract
We observed the Brackett α emission line (4.05 μm) within the nuclear starburst of NGC 253 to measure the kinematics of ionized gas, and distinguish motions driven by star formation feedback from gravitational motions induced by the central mass structure. Using NIRSPEC on Keck II, we obtained 30 spectra through a $0^{\prime \prime }_{.}5$ slit stepped across the central ∼5 arcsec × 25 arcsec (85 ...
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Key words
galaxies: individual: NGC 253,galaxies: kinematics and dynamics,galaxies: nuclei,galaxies: starburst,galaxies: ISM
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