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A multi-frequency study of the Milky Way-like Spiral Galaxy NGC 6744

  • Miranda Yew
  • , Miroslav D. Filipovic
  • , Quentin Roper
  • , Jordan D. Collier
  • , Evan J. Crawford
  • , Thomas H. Jarrett
  • , Nicholas F. H. Tothill
  • , Andrew N. O'Brien
  • , Marko Z. Pavlovic
  • , Thomas G. Pannuti
  • , Timothy J. Galvin
  • , Anna D. Kapinska
  • , Michelle E. Cluver
  • , Julie K. Banfield
  • , Eric M. Schlegel
  • , Nigel Maxted
  • , Kevin R. Grieve

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

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 MilkyWay's central black hole.We classify 5 objects as supernova remnant (SNR) candidates, 2 objects as likely SNRs, 17 as H II 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 M⊙ yr-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 MilkyWay, but considerably less that that of a typical starburst galaxy.
Original languageEnglish
Article numbere015
Number of pages14
JournalPublications of the Astronomical Society of Australia
Volume35
Publication statusPublished - 2018

Bibliographical note

Publisher Copyright:
© Astronomical Society of Australia 2018.

Keywords

  • X-ray astronomy
  • spiral galaxies
  • supernova remnants

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