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Triggered Star Formation and the Creation of the Supergiant HI Shell in IC 2574
Daniel R. Weisz, Evan D. Skillman, John M. Cannon +4
Based on deep imaging from the Advanced Camera for Surveys aboard the Hubble Space Telescope, we present new evidence that stellar feedback created a ~ 1 kpc supergiant HI shell (S…
Resolved Properties of Extragalactic Giant Molecular Clouds
Alberto D. Bolatto, Adam K. Leroy, Erik Rosolowsky +2
Giant molecular clouds (GMCs) are the major reservoirs of molecular gas in galaxies, and the starting point for star formation. As such, their properties play a key role in setting…
Geometrically Derived Timescales for Star Formation in Spiral Galaxies
D. Tamburro, H. -W. Rix, F. Walter +4
We estimate a characteristic timescale for star formation in the spiral arms of disk galaxies, going from atomic hydrogen (HI) to dust-enshrouded massive stars. Drawing on high-res…
Are the kinematics of DLAs in agreement with their arising in the gas disks of galaxies?
Martin Zwaan, Fabian Walter, Emma Ryan-Weber +3
We demonstrate in this paper that the velocity widths of the neutral gas in Damped Ly Alpha (DLA) systems are inconsistent with these systems originating in gas disks of galaxies s…
High-Resolution Rotation Curves and Galaxy Mass Models from THINGS
W. J. G. de Blok, F. Walter, E. Brinks +3
We present rotation curves of 19 galaxies from THINGS, The HI Nearby Galaxy Survey. The high spatial and velocity resolution of THINGS make these the highest quality HI rotation cu…
THINGS: The HI Nearby Galaxy Survey
F. Walter, E. Brinks, W. J. G. de Blok +4
We present "The HI Nearby Galaxy Survey (THINGS)", a high spectral (<=5.2 km/s) and spatial (~6") resolution survey of HI emission in 34 nearby galaxies obtained using the NRAO Ver…