A Multi-Frequency Study of the Milky Way-like Spiral Galaxy NGC 6744

Abstract

We present a multi-frequency study of the intermediate spiral SAB(r)bc type galaxy NGC 6744, using available data from the Chandra X-Ray telescope, radio continuum data from the Australia Telescope Compact Array and Murchison Widefield Array, and Wide-field Infrared Survey Explorer infrared observations. We identify 117 X-ray sources and 280 radio sources. Of these, we find nine sources in common between the X-ray and radio catalogues, one of which is a faint central black hole with a bolometric radio luminosity similar to the Milky Way's central black hole. We classify 5 objects as supernova remnant candidates, 2 objects as likely supernova remnants, 17 as HII regions, 1 source as an AGN; the remaining 255 radio sources are categorised as background objects and one X-ray source is classified as a foreground star. We find the star-formation rate (SFR) of NGC 6744 to be in the range 2.8 - 4.7 ${\mathrm{M}}_{\odot }\mathrm{y}{\mathrm{r}}^{-1}$ signifying the galaxy is still actively forming stars. The specific SFR of NGC 6744 is greater than that of late-type spirals such as the Milky Way, but considerably less that that of a typical starburst galaxy.

arXiv commentaccepted for publication in PASA

References in corpus (35)

• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• The Murchison Widefield Array: the Square Kilometre Array Precursor at low radio frequencies
• Chandra X-ray Spectroscopic Imaging of Sgr A* and the Central Parsec of the Galaxy
• Cosmicflows-2: The Data
• Rapid X-ray flaring from the direction of the supermassive black hole at the Galactic Centre
• GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey I: A low-frequency extragalactic catalogue
• Chandra X-Ray Observatory (CXO):Overview
• Sherpa: a Mission-Independent Data Analysis Application
• The Australia Telescope Compact Array Broadband Backend (CABB)
• Extending the Nearby Galaxy Heritage with WISE: First Results from the WISE Enhanced Resolution Galaxy Atlas
• Post-correlation radio frequency interference classification methods
• GLEAM: The GaLactic and Extragalactic All-sky MWA survey
• Galaxy And Mass Assembly (GAMA): Mid-Infrared Properties and Empirical Relations from $WISE$
• The simultaneous spectrum of Sgr A* from 20cm to 1mm and the nature of the mm-excess
• Calibrating Star Formation in WISE using Total Infrared Luminosity
• Towards the event horizon -- the supermassive black hole in the Galactic Center
• Statistical Analysis of Supernova Remnants in the Large Magellanic Cloud
• A retrospective view of Miriad
• Galaxy and Mass Assembly (GAMA): Exploring the WISE Cosmic Web in G12
• An ATCA 20cm Radio Continuum Study of the Large Magellanic Cloud
• Constructing a WISE High Resolution Galaxy Atlas
• The XMM-Newton survey of the Small Magellanic Cloud
• A Comparison of X-ray and Radio Emission from the Supernova Remnant Cassiopeia A
• Evolution of the Radio Remnant of Supernova 1987A: Morphological Changes from Day 7000
• Spectral energy distribution and radio halo of NGC 253 at low radio frequencies
• The Physical Parameters of the Micro-quasar S26 in the Sculptor Group Galaxy NGC 7793
• The nature of supernovae 2010O and 2010P in Arp 299 - II. Radio emission
• SN 2005at - A neglected type Ic supernova at 10 Mpc
• A Chandra Observation of the Nearby Sculptor Group Sd Galaxy NGC 7793
• Optical Spectra of SNR Candidates in NGC 300
• AGN behind the SMC selected from radio and X-ray surveys
• ICORE: Image Co-addition with Optional Resolution Enhancement
• Radio-Continuum Study of the Nearby Sculptor Group Galaxies. Part 3: NGC 7793 at lambda=12.2, 6 and 3 cm
• Radio-Continuum Study of the Nearby Sculptor Group Galaxies. Part 2: NGC 55 at λ=20, 13, 6 and 3 cm
• Radio-Continuum study of the Nearby Sculptor Group Galaxies. Part 1: NGC 300 at lambda = 20 cm

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• The WISE Extended Source Catalogue (WXSC) I: The 100 Largest Galaxies
• The supernova remnant population of the Small Magellanic Cloud
• A comparative study of satellite galaxies in Milky Way-like galaxies from HSC, DECaLS and SDSS
• Euclid: Early Release Observations -- Deep anatomy of nearby galaxies
• CHANG-ES XXVII: A Radio/X-ray Catalogue of Compact Sources in and around Edge-on Galaxies