HI in group interactions: HCG 44

Hess, Kelley M; Cluver, M E; Yahya, Sahba; Leisman, Lukas; Serra, Paolo; Lucero, Danielle M; Passmoor, Sean S; Carignan, Claude

HI in group interactions: HCG 44

Journal Article

2017

Journal Title

Monthly Notices of the Royal Astronomical Society

Link to Journal

https://dx.doi.org/10.1093/mnras/stw2338

Department

Department of Astronomy

Faculty

Faculty of Science

Abstract

Extending deep observations of the neutral atomic hydrogen (H I) to the environment around galaxy groups can reveal a complex history of group interactions which is invisible to studies that focus on the stellar component. Hickson Compact Group 44 (HCG 44) is a nearby example, and we have combined H I data from the Karoo Array Telescope, Westerbork Synthesis Radio Telescope, and Arecibo Legacy Fast ALFA survey, in order to achieve high column density sensitivity (N _{H {I}}

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