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A GBT Survey of the HALOGAS Galaxies and Their Environments I: Revealing the full extent of HI around NGC891, NGC925, NGC4414 & NGC4565
N. M. Pingel, D. J. Pisano, G. Heald +7
We present initial results from a deep neutral hydrogen (HI) survey of the HALOGAS galaxy sample, which includes the spiral galaxies NGC891, NGC925, NGC4414, and NGC4565, performed…
The Prevalence of Type III Disc Breaks in HI-rich and Low-spin Galaxies
Jing Wang, Zheng Zheng, Richard D'Souza +9
We investigate the origin of the type III (up-bending) discs based on a sample of 1808 galaxies from SDSS and a sub-sample of 286 galaxies with HI data from ALFALFA. We examine how…
Revival of the magnetar PSR J1622-4950: observations with MeerKAT, Parkes, XMM-Newton, Swift, Chandra, and NuSTAR
F. Camilo, P. Scholz, M. Serylak +205
New radio (MeerKAT and Parkes) and X-ray (XMM-Newton, Swift, Chandra, and NuSTAR) observations of PSR J1622-4950 indicate that the magnetar, in a quiescent state since at least ear…
The Enigmatic (Almost) Dark Galaxy Coma P: The Atomic Interstellar Medium
Catherine Ball, John M. Cannon, Lukas Leisman +12
We present new high-resolution HI spectral line imaging of Coma P, the brightest HI source in the system HI 123220. This extremely low surface brightness galaxy was first identi…