372 citations · 2.6k across the 57 of their papers we have counts for
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Connecting Transitions in Galaxy Properties to Refueling
Sheila J. Kannappan, David V. Stark, Kathleen D. Eckert +12
We relate transitions in galaxy structure and gas content to refueling, here defined to include both the external gas accretion and the internal gas processing needed to renew rese…
The Fueling Diagram: Linking Galaxy Molecular-to-Atomic Gas Ratios to Interactions and Accretion
David V. Stark, Sheila J. Kannappan, Lisa H. Wei +4
To assess how external factors such as local interactions and fresh gas accretion influence the global ISM of galaxies, we analyze the relationship between recent enhancements of c…
Extended UV Disks and UV-Bright Disks in Low-Mass E/S0 Galaxies
Amanda J. Moffett, Sheila J. Kannappan, Andrew J. Baker +1
We have identified 15 XUV disks in a largely field sample of 38 E/S0 galaxies with stellar masses primarily below ~4 x 10^10 M_sun and comparable numbers on the red and blue sequen…
The Ubiquity and Dual Nature of Ultra Compact Dwarfs
Mark A. Norris, Sheila J. Kannappan
We present the discovery of several Ultra Compact Dwarfs (UCDs) located in field/group environments. Examination of these objects, plus literature objects, confirms the existence o…
The Relationship Between Molecular Gas and Star Formation in Low-Mass E/S0 Galaxies
Lisa H. Wei, Stuart N. Vogel, Sheila J. Kannappan +3
We consider the relationship between molecular-gas and star-formation surface densities in 19 morphologically defined E/S0s with stellar mass <~ 4x10^10 M_sun, paying particular at…
UCDs as Probes of the Major and Minor Merger Histories of Galaxies
Mark A. Norris, Sheila J. Kannappan
Two competing theories posit that Ultra Compact Dwarfs (UCDs) form either as the stripped nuclei of dwarf galaxies or as giant globular clusters (GGCs) associated with the largest…