Optical Spectra of Radio Planetary Nebulae in the Small Magellanic Cloud

Abstract

We present preliminary results from spectral observations of four candidate radio sources co-identified with known planetary nebulae (PNe) in the Small Magellanic Cloud (SMC). These were made using the Radcliffe 1.9-meter telescope in Sutherland, South Africa. These radio PNe were originally found in Australia Telescope Compact Array (ATCA) surveys of the SMC at 1.42 and 2.37 GHz, and were further confirmed by new high resolution ATCA images at 6 and 3 cm (4"/2"). Optical PNe and radio candidates are within 2" and may represent a subpopulation of selected radio bright objects. Nebular ionized masses of these objects may be 2.6 MSol or greater, supporting the existence of PNe progenitor central stars with masses up to 8 MSol.

arXiv comment6 pages 8 figures, to be published in Serbian Astronomical Journal

References in corpus (4)

• A Review of the Distance and Structure of the Large Magellanic Cloud
• An ATCA 20cm Radio Continuum Study of the Large Magellanic Cloud
• A New Population of Planetary Nebulae Discovered in the Large Magellanic Cloud (II): Complete PN Catalogue
• A 4.8- and 8.6-GHz Survey of the Large Magellanic Cloud: I The Images

Cited by in corpus (6)

• The ASKAP-EMU Early Science Project:Radio Continuum Survey of the Small Magellanic Cloud
• Radio Planetary Nebulae in the Magellanic Clouds
• Optical Spectra of SNR Candidates in NGC 300
• The Sigma-D Analysis of Recently Detected Radio Planetary Nebulae in the Magellanic Clouds
• Radio Planetary Nebulae in the Small Magellanic Cloud
• Radio Planetary Nebulae in the Magellanic Clouds