SIMBAD references

2024MNRAS.527.6473F - Mon. Not. R. Astron. Soc., 527, 6473-6494 (2024/January-3)

Detailed spectrophotometric analysis of the superluminous and fast evolving SN 2019neq.

FIORE A., BENETTI S., TARTAGLIA L., JERKSTRAND A., SALMASO I., TOMASELLA L., MORALES-GAROFFOLO A., GEIER S., ELIAS-ROSA N., CAPPELLARO E., WANG X., MO J., CHEN Z., YAN S., PASTORELLO A., MAZZALI P.A., CIOLFI R., CAI Y., FRASER M., GUTIERREZ C.P., KARAMEHMETOGLU E., KUNCARAYAKTI H., MORAN S., OCHNER P., REGUITTI A., REYNOLDS T.M. and VALERIN G.

Abstract (from CDS):

SN 2019neq was a very fast evolving superluminous supernova. At a redshift z = 0.1059, its peak absolute magnitude was -21.5 ± 0.2 mag in g band. In this work, we present data and analysis from an extensive spectrophotometric follow-up campaign using multiple observational facilities. Thanks to a nebular spectrum of SN 2019neq, we investigated some of the properties of the host galaxy at the location of SN 2019neq and found that its metallicity and specific star formation rate are in a good agreement with those usually measured for SLSNe-I hosts. We then discuss the plausibility of the magnetar and the circumstellar interaction scenarios to explain the observed light curves, and interpret a nebular spectrum of SN 2019neq using published SUMO radiative-transfer models. The results of our analysis suggest that the spin-down radiation of a millisecond magnetar with a magnetic field $B\simeq 6\times 10^{14}\, \mathrm{G}$ could boost the luminosity of SN 2019neq.

Abstract Copyright: © 2023 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): supernovae: general - supernovae: individual: SN 2019neq

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 37

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