A multi-frequency study of the Milky Way-like spiral galaxy NGC6744

Abstract

I present a multi-frequency study of the intermediate spiral SAB(r)bc type galaxy NGC6744. I used available data from the ACIS instrument on the X-Ray telescope, Australia Telescope Compact Array (ATCA)and Murchison Wide_eld Array (MWA) radio-continuum and WISE Infrared (IR) observations. I present an analysis identifying 117 X-ray sources and 280 radio sources. Of these, I found 10 sources in common between the X-ray and radio catalogues with one of these sources being the faint supermassive black hole (SMBH) with bolometric radio luminosity similar to the Milky Way's SMBH. Also, I classi_ed 7 objects as Supernova Remnant (SNR) candidates, 16 Hii regions and the remaining 256 radio sources categorised as background objects. Using WISE images, I found the star-formation rate (SFR) of NGC6744 to be in the range 2.8-4.7 M? yr-1. This shows that the growth of NGC6744 is larger than late-type spirals, such as the Milky Way, but less than starburst galaxies, and is still actively building.

Date of Award	2017
Original language	English