The ‘red supergiant problem’: the upper luminosity boundary of Type II supernova progenitors
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DOI: 10.1093/mnras/staa174
Abstract: By comparing the properties of red supergiant (RSG) supernova (SN) progenitors to those of field RSGs, it has been claimed that there is an absence of progenitors with luminosities L above log (L/L⊙) > 5.2. This… read more here.
Keywords: supernova progenitors; upper luminosity; luminosity; red supergiant ... See more keywords
Superluminous supernova progenitors have a half-solar metallicity threshold
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DOI: 10.1093/mnras/stx1428
Abstract: Host galaxy properties provide strong constraints on the stellar progenitors of superluminous supernovae. By comparing a sample of 19 low-redshift (z < 0.3) superluminous supernova hosts to galaxy populations in the local Universe, we show… read more here.
Keywords: supernova progenitors; superluminous supernova; star formation; host ... See more keywords
The distance, supernova rate, and supernova progenitors of NGC 6946
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DOI: 10.1093/mnrasl/slz030
Abstract: The distance to the fireworks galaxy NGC 6946 is highly uncertain. Recent distance estimates using the tip of the red giant branch of 7.7 to 7.8 Mpc are larger than the distance commonly assumed for… read more here.
Keywords: mpc; supernova progenitors; distance; ngc 6946 ... See more keywords