A Spectroscopic Survey of NGC6744

Sharp, Amelia (2023) A Spectroscopic Survey of NGC6744. Masters thesis, University of Central Lancashire.

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Digital ID: http://doi.org/10.17030/uclan.thesis.00050672

Abstract

Cataloguing Wolf Rayet stars in galaxies within 30Mpc is vital for proving or disproving the theory that Wolf Rayet stars are progenitors of type Ib and Ic supernovae. I present a spectroscopic survey looking for Wolf Rayet stars in NGC6744. I used spectroscopy from the Gemini-South Multi Object Spectrograph to analyse 25 objects in a region in the South East of NGC 6744. These objects include candidate Wolf Rayet stars and HII regions. From this, I report spectroscopic confirmation of 35 Wolf-Rayet stars within 7 HeII emission-line sources, of which 17 have WC subtypes and 18 have WN subtypes. In addition, I present a new measurement for the metallicity gradient of NGC 6744 of


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