The ambiguous transient ASASSN-17hx. A possible nova-impostor

Some transients, although classified as novae based on their maximum and early decline optical spectra, cast doubts on their true nature and whether nova impostors might exist. We monitored a candidate nova which displayed a distinctly unusual light curve at maximum and early decline through optical spectroscopy (3000-10000 A, 500

Keywords:

• White dwarf
• Filling factor
• Emission spectrum
• Astrophysics
• Astronomy
• Spectral line
• Ejecta
• Physics
• Photometry (optics)
• Light curve
• Low Mass

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