NOAO >   Observing Info >   Approved Programs >   2019B-0514

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Program Information for 2019B-0514


PI: Melissa Morris, U. of Wisconsin, Madison, mmorris@astro.wisc.edu
Address: Astronomy Department, 1618 Fordem Ave apt 308, Madison, Wisconsin 53704 United States

CoI: E Wilcots, U. of Wisconsin, Madison

Title: Measuring the Density of the Intragroup Medium using Bent Double Lobed AGN

Abstract: Galaxy groups are collections of tens of galaxies that are gravitationally bound. While the vast majority of galaxies in the local universe exist in groups, not much is known about the large reservoirs of gas that exist within them, known as the intragroup medium (IGrM) due to the fact that it is very difficult to directly observe. However, we are able to see the effect it has on radio jets produced by active galactic nuclei (AGN). As AGN host galaxies move through groups, the pressure of gas in the IGrM causes the AGN jets to bend backwards. By observing how bent these jets are and how quickly they are moving, it is possible to measure the density of the IGrM. We plan to use Hydra and the Bench Spectrograph on the WIYN 3.5 m telescope to observe AGN with bent jets and galaxies in 13 galaxy groups. With these spectra, we will be able to estimate the velocity of the AGN moving through these groups, allowing us to measure the density of the IGrM.

Program Type: WTAC

Scheduled Nights:
Run 1 (2019B):  WIYN/HYDR -- 1n on Dec 27 - Dec 28 2019


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2019B-0514

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